* [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
@ 2026-02-19 15:11 max.oss.09
2026-02-19 16:01 ` Frank Li
2026-03-06 15:24 ` Frank Li
0 siblings, 2 replies; 18+ messages in thread
From: max.oss.09 @ 2026-02-19 15:11 UTC (permalink / raw)
To: Francesco Dolcini
Cc: Max Krummenacher, Conor Dooley, Fabio Estevam, Frank Li,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel
From: Max Krummenacher <max.krummenacher@toradex.com>
This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
The change introduced a regression: at least Colibri iMX6ULL and
Colibri iMX7 no longer boot with that commit applied, while they boot
again after reverting it.
Although this has only been verified on these two modules, the issue
is expected to affect all device trees using the gpmi-nand driver.
[ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
[ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
[ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
[ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
[ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
[ 0.894686] 0x000000400000-0x000020000000 : "ubi"
[ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
...
[ 0.960443] ubi0: default fastmap pool size: 200
[ 0.960476] ubi0: default fastmap WL pool size: 100
[ 0.960500] ubi0: attaching mtd4
[ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
...
[ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
[ 1.650029] UBI error: cannot attach mtd4
...
[ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
---
arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
.../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
.../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
.../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
15 files changed, 22 insertions(+), 82 deletions(-)
diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
index f452764fae00..547fb141ec0c 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
@@ -36,12 +36,8 @@ &clks {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
status = "okay";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- };
};
&i2c3 {
diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
index 58ecdb87c6d4..9975b6ee433d 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
@@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
status = "okay";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- };
};
&i2c1 {
diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
index 6f3becd33a5b..aa9a442852f4 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
@@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
status = "okay";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- };
};
&i2c1 {
diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
index f2140dd8525f..85e278eb2016 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
@@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
status = "disabled";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- };
};
&i2c3 {
diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
index 131a3428ddb8..c93dbc595ef6 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
@@ -260,14 +260,10 @@ fixed-link {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- };
};
&i2c3 {
diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
index d29adfef5fdb..57297d6521cf 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
@@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
fsl,no-blockmark-swap;
status = "okay";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- };
};
&i2c1 {
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
index 40d530c1dc29..2a6bb5ff808a 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
@@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
status = "okay";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- };
};
&i2c1 {
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
index 776f6f78ee46..e34c8cbe36ae 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
@@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
status = "disabled";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- };
};
&i2c1 {
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
index 27e4d2aec137..a3ea1b208462 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
@@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
status = "disabled";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- };
};
&i2c1 {
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
index dc53f9286ffe..1992dfb53b45 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
@@ -296,13 +296,9 @@ &fec2 {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
fsl,no-blockmark-swap;
status = "okay";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- };
};
&i2c2 {
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
index eaed2cbf0c82..ec3c1e7301f4 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
@@ -160,15 +160,11 @@ &gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
fsl,use-minimum-ecc;
+ nand-on-flash-bbt;
+ nand-ecc-mode = "hw";
+ nand-ecc-strength = <8>;
+ nand-ecc-step-size = <512>;
status = "okay";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- nand-ecc-mode = "hw";
- nand-ecc-strength = <8>;
- nand-ecc-step-size = <512>;
- };
};
/* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
index 3dfd43b32055..43518bf07602 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
@@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-ecc-mode = "hw";
+ nand-ecc-strength = <0>;
+ nand-ecc-step-size = <0>;
+ nand-on-flash-bbt;
status = "okay";
-
- nand@0 {
- reg = <0>;
- nand-ecc-mode = "hw";
- nand-ecc-strength = <0>;
- nand-ecc-step-size = <0>;
- nand-on-flash-bbt;
- };
};
&iomuxc {
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
index fc298f57bfff..83b9de17cee2 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
@@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
status = "disabled";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- };
};
&uart1 {
diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
index 8ec18eae98a4..2d9f495660c9 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
@@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
status = "okay";
-
- nand@0 {
- reg = <0>;
- nand-on-flash-bbt;
- };
};
&snvs_poweroff {
diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
index a41dc4edfc0d..8666dcd7fe97 100644
--- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
@@ -375,14 +375,10 @@ &gpio7 {
/* NAND on such SKUs */
&gpmi {
fsl,use-minimum-ecc;
+ nand-ecc-mode = "hw";
+ nand-on-flash-bbt;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
-
- nand@0 {
- reg = <0>;
- nand-ecc-mode = "hw";
- nand-on-flash-bbt;
- };
};
/* On-module Power I2C */
--
2.42.0
^ permalink raw reply related [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-02-19 15:11 [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0" max.oss.09
@ 2026-02-19 16:01 ` Frank Li
2026-02-19 16:30 ` Francesco Dolcini
2026-02-19 17:06 ` Max Krummenacher
2026-03-06 15:24 ` Frank Li
1 sibling, 2 replies; 18+ messages in thread
From: Frank Li @ 2026-02-19 16:01 UTC (permalink / raw)
To: max.oss.09
Cc: Francesco Dolcini, Max Krummenacher, Conor Dooley, Fabio Estevam,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel
On Thu, Feb 19, 2026 at 04:11:49PM +0100, max.oss.09@gmail.com wrote:
> From: Max Krummenacher <max.krummenacher@toradex.com>
>
> This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
>
> The change introduced a regression: at least Colibri iMX6ULL and
> Colibri iMX7 no longer boot with that commit applied, while they boot
> again after reverting it.
>
> Although this has only been verified on these two modules, the issue
> is expected to affect all device trees using the gpmi-nand driver.
>
> [ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
> [ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
> [ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
> [ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
> [ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
> [ 0.894686] 0x000000400000-0x000020000000 : "ubi"
> [ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
> ...
> [ 0.960443] ubi0: default fastmap pool size: 200
> [ 0.960476] ubi0: default fastmap WL pool size: 100
> [ 0.960500] ubi0: attaching mtd4
> [ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
> ...
> [ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
> [ 1.650029] UBI error: cannot attach mtd4
> ...
> [ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
Can you help found the real reason why not boot?
nand@0 is preferred format for MTD raw nand.
Frank
>
> Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
> Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
>
> ---
>
> arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
> arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
> arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
> .../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
> arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
> arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
> arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
> arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
> .../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
> arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
> arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
> .../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
> arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
> arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
> arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
> 15 files changed, 22 insertions(+), 82 deletions(-)
>
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> index f452764fae00..547fb141ec0c 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> @@ -36,12 +36,8 @@ &clks {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> status = "okay";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &i2c3 {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> index 58ecdb87c6d4..9975b6ee433d 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> @@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> status = "okay";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &i2c1 {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> index 6f3becd33a5b..aa9a442852f4 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> @@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> status = "okay";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &i2c1 {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> index f2140dd8525f..85e278eb2016 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> @@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> status = "disabled";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &i2c3 {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> index 131a3428ddb8..c93dbc595ef6 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> @@ -260,14 +260,10 @@ fixed-link {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> #address-cells = <1>;
> #size-cells = <0>;
> status = "okay";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &i2c3 {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> index d29adfef5fdb..57297d6521cf 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> @@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> fsl,no-blockmark-swap;
> status = "okay";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &i2c1 {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> index 40d530c1dc29..2a6bb5ff808a 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> @@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> status = "okay";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &i2c1 {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> index 776f6f78ee46..e34c8cbe36ae 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> @@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> status = "disabled";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &i2c1 {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> index 27e4d2aec137..a3ea1b208462 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> @@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> status = "disabled";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &i2c1 {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> index dc53f9286ffe..1992dfb53b45 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> @@ -296,13 +296,9 @@ &fec2 {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> fsl,no-blockmark-swap;
> status = "okay";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &i2c2 {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> index eaed2cbf0c82..ec3c1e7301f4 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> @@ -160,15 +160,11 @@ &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> fsl,use-minimum-ecc;
> + nand-on-flash-bbt;
> + nand-ecc-mode = "hw";
> + nand-ecc-strength = <8>;
> + nand-ecc-step-size = <512>;
> status = "okay";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - nand-ecc-mode = "hw";
> - nand-ecc-strength = <8>;
> - nand-ecc-step-size = <512>;
> - };
> };
>
> /* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> index 3dfd43b32055..43518bf07602 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> @@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-ecc-mode = "hw";
> + nand-ecc-strength = <0>;
> + nand-ecc-step-size = <0>;
> + nand-on-flash-bbt;
> status = "okay";
> -
> - nand@0 {
> - reg = <0>;
> - nand-ecc-mode = "hw";
> - nand-ecc-strength = <0>;
> - nand-ecc-step-size = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &iomuxc {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> index fc298f57bfff..83b9de17cee2 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> @@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> status = "disabled";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &uart1 {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> index 8ec18eae98a4..2d9f495660c9 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> +++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> @@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> status = "okay";
> -
> - nand@0 {
> - reg = <0>;
> - nand-on-flash-bbt;
> - };
> };
>
> &snvs_poweroff {
> diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> index a41dc4edfc0d..8666dcd7fe97 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> @@ -375,14 +375,10 @@ &gpio7 {
> /* NAND on such SKUs */
> &gpmi {
> fsl,use-minimum-ecc;
> + nand-ecc-mode = "hw";
> + nand-on-flash-bbt;
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> -
> - nand@0 {
> - reg = <0>;
> - nand-ecc-mode = "hw";
> - nand-on-flash-bbt;
> - };
> };
>
> /* On-module Power I2C */
> --
> 2.42.0
>
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-02-19 16:01 ` Frank Li
@ 2026-02-19 16:30 ` Francesco Dolcini
2026-02-19 17:06 ` Max Krummenacher
1 sibling, 0 replies; 18+ messages in thread
From: Francesco Dolcini @ 2026-02-19 16:30 UTC (permalink / raw)
To: Frank Li, Krzysztof Kozlowski
Cc: max.oss.09, Francesco Dolcini, Max Krummenacher, Conor Dooley,
Fabio Estevam, Peng Fan, Pengutronix Kernel Team, Rob Herring,
Sascha Hauer, Shawn Guo, devicetree, imx, linux-arm-kernel,
linux-kernel
On Thu, Feb 19, 2026 at 11:01:26AM -0500, Frank Li wrote:
> On Thu, Feb 19, 2026 at 04:11:49PM +0100, max.oss.09@gmail.com wrote:
> > From: Max Krummenacher <max.krummenacher@toradex.com>
> >
> > This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
> >
> > The change introduced a regression: at least Colibri iMX6ULL and
> > Colibri iMX7 no longer boot with that commit applied, while they boot
> > again after reverting it.
> >
> > Although this has only been verified on these two modules, the issue
> > is expected to affect all device trees using the gpmi-nand driver.
> >
> > [ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
> > [ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
> > [ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
> > [ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
> > [ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
> > [ 0.894686] 0x000000400000-0x000020000000 : "ubi"
> > [ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
> > ...
> > [ 0.960443] ubi0: default fastmap pool size: 200
> > [ 0.960476] ubi0: default fastmap WL pool size: 100
> > [ 0.960500] ubi0: attaching mtd4
> > [ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
> > ...
> > [ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
> > [ 1.650029] UBI error: cannot attach mtd4
> > ...
> > [ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
>
> Can you help found the real reason why not boot?
> nand@0 is preferred format for MTD raw nand.
I already raised the issue when you sent this patch series, we need to
consider the other users of this DT blob, for example U-Boot.
Please see my comments and Krzysztof one here [1]
I agree on investigating this, but I see no other option than reverting
for now.
[1] https://lore.kernel.org/all/20251105115538.GA17091@francesco-nb/
Francesco
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-02-19 16:01 ` Frank Li
2026-02-19 16:30 ` Francesco Dolcini
@ 2026-02-19 17:06 ` Max Krummenacher
2026-02-19 19:41 ` Frank Li
1 sibling, 1 reply; 18+ messages in thread
From: Max Krummenacher @ 2026-02-19 17:06 UTC (permalink / raw)
To: Frank Li
Cc: Francesco Dolcini, Max Krummenacher, Conor Dooley, Fabio Estevam,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel
Hi Frank
On Thu, Feb 19, 2026 at 11:01:26AM -0500, Frank Li wrote:
> On Thu, Feb 19, 2026 at 04:11:49PM +0100, max.oss.09@gmail.com wrote:
> > From: Max Krummenacher <max.krummenacher@toradex.com>
> >
> > This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
> >
> > The change introduced a regression: at least Colibri iMX6ULL and
> > Colibri iMX7 no longer boot with that commit applied, while they boot
> > again after reverting it.
> >
> > Although this has only been verified on these two modules, the issue
> > is expected to affect all device trees using the gpmi-nand driver.
> >
> > [ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
> > [ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
> > [ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
> > [ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
> > [ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
> > [ 0.894686] 0x000000400000-0x000020000000 : "ubi"
> > [ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
> > ...
> > [ 0.960443] ubi0: default fastmap pool size: 200
> > [ 0.960476] ubi0: default fastmap WL pool size: 100
> > [ 0.960500] ubi0: attaching mtd4
> > [ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
> > ...
> > [ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
> > [ 1.650029] UBI error: cannot attach mtd4
> > ...
> > [ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
>
> Can you help found the real reason why not boot?
> nand@0 is preferred format for MTD raw nand.
>
> Frank
I guess the root cause is that the driver for gpmi-nand predates the
update of the binding rules which want the nand device described in
a child node 'nand@0' also for nand controllers which only can
control one nand chip.
While it is possible to update the driver in the same patch set as
changing the device tree to understand the new dtb rules, maybe even
falling back to the old definitions this likely breaks other users,
most notable U-Boot.
So I don't see a quick fix other than reverting and living with the
dtb_check warning.
Regards,
Max
> >
> > Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
> > Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
> >
> > ---
> >
> > arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
> > arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
> > arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
> > .../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
> > arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
> > arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
> > arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
> > arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
> > .../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
> > arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
> > arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
> > .../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
> > arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
> > arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
> > arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
> > 15 files changed, 22 insertions(+), 82 deletions(-)
> >
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > index f452764fae00..547fb141ec0c 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > @@ -36,12 +36,8 @@ &clks {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > status = "okay";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &i2c3 {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > index 58ecdb87c6d4..9975b6ee433d 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > @@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > status = "okay";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &i2c1 {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > index 6f3becd33a5b..aa9a442852f4 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > @@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > status = "okay";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &i2c1 {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > index f2140dd8525f..85e278eb2016 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > @@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > status = "disabled";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &i2c3 {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > index 131a3428ddb8..c93dbc595ef6 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > @@ -260,14 +260,10 @@ fixed-link {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > #address-cells = <1>;
> > #size-cells = <0>;
> > status = "okay";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &i2c3 {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > index d29adfef5fdb..57297d6521cf 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > @@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > fsl,no-blockmark-swap;
> > status = "okay";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &i2c1 {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > index 40d530c1dc29..2a6bb5ff808a 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > @@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > status = "okay";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &i2c1 {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > index 776f6f78ee46..e34c8cbe36ae 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > @@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > status = "disabled";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &i2c1 {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > index 27e4d2aec137..a3ea1b208462 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > @@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > status = "disabled";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &i2c1 {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > index dc53f9286ffe..1992dfb53b45 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > @@ -296,13 +296,9 @@ &fec2 {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > fsl,no-blockmark-swap;
> > status = "okay";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &i2c2 {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > index eaed2cbf0c82..ec3c1e7301f4 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > @@ -160,15 +160,11 @@ &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > fsl,use-minimum-ecc;
> > + nand-on-flash-bbt;
> > + nand-ecc-mode = "hw";
> > + nand-ecc-strength = <8>;
> > + nand-ecc-step-size = <512>;
> > status = "okay";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - nand-ecc-mode = "hw";
> > - nand-ecc-strength = <8>;
> > - nand-ecc-step-size = <512>;
> > - };
> > };
> >
> > /* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > index 3dfd43b32055..43518bf07602 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > @@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-ecc-mode = "hw";
> > + nand-ecc-strength = <0>;
> > + nand-ecc-step-size = <0>;
> > + nand-on-flash-bbt;
> > status = "okay";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-ecc-mode = "hw";
> > - nand-ecc-strength = <0>;
> > - nand-ecc-step-size = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &iomuxc {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > index fc298f57bfff..83b9de17cee2 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > @@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > status = "disabled";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &uart1 {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > index 8ec18eae98a4..2d9f495660c9 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > @@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > status = "okay";
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > &snvs_poweroff {
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > index a41dc4edfc0d..8666dcd7fe97 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > @@ -375,14 +375,10 @@ &gpio7 {
> > /* NAND on such SKUs */
> > &gpmi {
> > fsl,use-minimum-ecc;
> > + nand-ecc-mode = "hw";
> > + nand-on-flash-bbt;
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > -
> > - nand@0 {
> > - reg = <0>;
> > - nand-ecc-mode = "hw";
> > - nand-on-flash-bbt;
> > - };
> > };
> >
> > /* On-module Power I2C */
> > --
> > 2.42.0
> >
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-02-19 17:06 ` Max Krummenacher
@ 2026-02-19 19:41 ` Frank Li
2026-02-25 17:40 ` Max Krummenacher
0 siblings, 1 reply; 18+ messages in thread
From: Frank Li @ 2026-02-19 19:41 UTC (permalink / raw)
To: Max Krummenacher
Cc: Francesco Dolcini, Max Krummenacher, Conor Dooley, Fabio Estevam,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel
On Thu, Feb 19, 2026 at 06:06:31PM +0100, Max Krummenacher wrote:
> Hi Frank
>
> On Thu, Feb 19, 2026 at 11:01:26AM -0500, Frank Li wrote:
> > On Thu, Feb 19, 2026 at 04:11:49PM +0100, max.oss.09@gmail.com wrote:
> > > From: Max Krummenacher <max.krummenacher@toradex.com>
> > >
> > > This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
> > >
> > > The change introduced a regression: at least Colibri iMX6ULL and
> > > Colibri iMX7 no longer boot with that commit applied, while they boot
> > > again after reverting it.
> > >
> > > Although this has only been verified on these two modules, the issue
> > > is expected to affect all device trees using the gpmi-nand driver.
> > >
> > > [ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
> > > [ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
> > > [ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
> > > [ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
> > > [ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
> > > [ 0.894686] 0x000000400000-0x000020000000 : "ubi"
> > > [ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
> > > ...
> > > [ 0.960443] ubi0: default fastmap pool size: 200
> > > [ 0.960476] ubi0: default fastmap WL pool size: 100
> > > [ 0.960500] ubi0: attaching mtd4
> > > [ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
> > > ...
> > > [ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
> > > [ 1.650029] UBI error: cannot attach mtd4
> > > ...
> > > [ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
> >
> > Can you help found the real reason why not boot?
> > nand@0 is preferred format for MTD raw nand.
> >
> > Frank
>
> I guess the root cause is that the driver for gpmi-nand predates the
> update of the binding rules which want the nand device described in
> a child node 'nand@0' also for nand controllers which only can
> control one nand chip.
>
> While it is possible to update the driver in the same patch set as
> changing the device tree to understand the new dtb rules, maybe even
> falling back to the old definitions this likely breaks other users,
> most notable U-Boot.
GPMI is widely used, include i.MX8 still use GPMI. Does below patch fix
boot problem?
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
index 51f595fbc834e..fb126a7c4a61e 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
@@ -2680,6 +2680,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
{
struct nand_chip *chip = &this->nand;
struct mtd_info *mtd = nand_to_mtd(chip);
+ struct device_node *np;
int ret;
/* init the MTD data structures */
@@ -2688,7 +2689,10 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
/* init the nand_chip{}, we don't support a 16-bit NAND Flash bus. */
nand_set_controller_data(chip, this);
- nand_set_flash_node(chip, this->pdev->dev.of_node);
+ np = of_get_next_child(this->pdev->dev.of_node, NULL);
+ if (!np)
+ np = this->pdev->dev.of_node;
+ nand_set_flash_node(chip, np);
chip->legacy.block_markbad = gpmi_block_markbad;
chip->badblock_pattern = &gpmi_bbt_descr;
chip->options |= NAND_NO_SUBPAGE_WRITE;
Frank
>
>
> So I don't see a quick fix other than reverting and living with the
> dtb_check warning.
>
> Regards,
> Max
>
> > >
> > > Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
> > > Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
> > >
> > > ---
> > >
> > > arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
> > > arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
> > > arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
> > > .../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
> > > arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
> > > arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
> > > arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
> > > arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
> > > .../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
> > > arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
> > > arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
> > > .../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
> > > arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
> > > arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
> > > arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
> > > 15 files changed, 22 insertions(+), 82 deletions(-)
> > >
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > index f452764fae00..547fb141ec0c 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > @@ -36,12 +36,8 @@ &clks {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-on-flash-bbt;
> > > status = "okay";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &i2c3 {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > index 58ecdb87c6d4..9975b6ee433d 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > @@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-on-flash-bbt;
> > > status = "okay";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &i2c1 {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > index 6f3becd33a5b..aa9a442852f4 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > @@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-on-flash-bbt;
> > > status = "okay";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &i2c1 {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > index f2140dd8525f..85e278eb2016 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > @@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-on-flash-bbt;
> > > status = "disabled";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &i2c3 {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > index 131a3428ddb8..c93dbc595ef6 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > @@ -260,14 +260,10 @@ fixed-link {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-on-flash-bbt;
> > > #address-cells = <1>;
> > > #size-cells = <0>;
> > > status = "okay";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &i2c3 {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > index d29adfef5fdb..57297d6521cf 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > @@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-on-flash-bbt;
> > > fsl,no-blockmark-swap;
> > > status = "okay";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &i2c1 {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > index 40d530c1dc29..2a6bb5ff808a 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > @@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-on-flash-bbt;
> > > status = "okay";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &i2c1 {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > index 776f6f78ee46..e34c8cbe36ae 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > @@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-on-flash-bbt;
> > > status = "disabled";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &i2c1 {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > index 27e4d2aec137..a3ea1b208462 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > @@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-on-flash-bbt;
> > > status = "disabled";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &i2c1 {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > index dc53f9286ffe..1992dfb53b45 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > @@ -296,13 +296,9 @@ &fec2 {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-on-flash-bbt;
> > > fsl,no-blockmark-swap;
> > > status = "okay";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &i2c2 {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > index eaed2cbf0c82..ec3c1e7301f4 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > @@ -160,15 +160,11 @@ &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > fsl,use-minimum-ecc;
> > > + nand-on-flash-bbt;
> > > + nand-ecc-mode = "hw";
> > > + nand-ecc-strength = <8>;
> > > + nand-ecc-step-size = <512>;
> > > status = "okay";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - nand-ecc-mode = "hw";
> > > - nand-ecc-strength = <8>;
> > > - nand-ecc-step-size = <512>;
> > > - };
> > > };
> > >
> > > /* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > index 3dfd43b32055..43518bf07602 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > @@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-ecc-mode = "hw";
> > > + nand-ecc-strength = <0>;
> > > + nand-ecc-step-size = <0>;
> > > + nand-on-flash-bbt;
> > > status = "okay";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-ecc-mode = "hw";
> > > - nand-ecc-strength = <0>;
> > > - nand-ecc-step-size = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &iomuxc {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > index fc298f57bfff..83b9de17cee2 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > @@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-on-flash-bbt;
> > > status = "disabled";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &uart1 {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > index 8ec18eae98a4..2d9f495660c9 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > @@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
> > > &gpmi {
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > + nand-on-flash-bbt;
> > > status = "okay";
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > &snvs_poweroff {
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > index a41dc4edfc0d..8666dcd7fe97 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > @@ -375,14 +375,10 @@ &gpio7 {
> > > /* NAND on such SKUs */
> > > &gpmi {
> > > fsl,use-minimum-ecc;
> > > + nand-ecc-mode = "hw";
> > > + nand-on-flash-bbt;
> > > pinctrl-names = "default";
> > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > -
> > > - nand@0 {
> > > - reg = <0>;
> > > - nand-ecc-mode = "hw";
> > > - nand-on-flash-bbt;
> > > - };
> > > };
> > >
> > > /* On-module Power I2C */
> > > --
> > > 2.42.0
> > >
^ permalink raw reply related [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-02-19 19:41 ` Frank Li
@ 2026-02-25 17:40 ` Max Krummenacher
2026-02-25 17:51 ` Frank Li
0 siblings, 1 reply; 18+ messages in thread
From: Max Krummenacher @ 2026-02-25 17:40 UTC (permalink / raw)
To: Frank Li
Cc: Francesco Dolcini, Max Krummenacher, Conor Dooley, Fabio Estevam,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel
On Thu, Feb 19, 2026 at 02:41:58PM -0500, Frank Li wrote:
> On Thu, Feb 19, 2026 at 06:06:31PM +0100, Max Krummenacher wrote:
> > Hi Frank
> >
> > On Thu, Feb 19, 2026 at 11:01:26AM -0500, Frank Li wrote:
> > > On Thu, Feb 19, 2026 at 04:11:49PM +0100, max.oss.09@gmail.com wrote:
> > > > From: Max Krummenacher <max.krummenacher@toradex.com>
> > > >
> > > > This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
> > > >
> > > > The change introduced a regression: at least Colibri iMX6ULL and
> > > > Colibri iMX7 no longer boot with that commit applied, while they boot
> > > > again after reverting it.
> > > >
> > > > Although this has only been verified on these two modules, the issue
> > > > is expected to affect all device trees using the gpmi-nand driver.
> > > >
> > > > [ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
> > > > [ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
> > > > [ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
> > > > [ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
> > > > [ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
> > > > [ 0.894686] 0x000000400000-0x000020000000 : "ubi"
> > > > [ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
> > > > ...
> > > > [ 0.960443] ubi0: default fastmap pool size: 200
> > > > [ 0.960476] ubi0: default fastmap WL pool size: 100
> > > > [ 0.960500] ubi0: attaching mtd4
> > > > [ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
> > > > ...
> > > > [ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
> > > > [ 1.650029] UBI error: cannot attach mtd4
> > > > ...
> > > > [ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
> > >
> > > Can you help found the real reason why not boot?
> > > nand@0 is preferred format for MTD raw nand.
> > >
> > > Frank
> >
> > I guess the root cause is that the driver for gpmi-nand predates the
> > update of the binding rules which want the nand device described in
> > a child node 'nand@0' also for nand controllers which only can
> > control one nand chip.
> >
> > While it is possible to update the driver in the same patch set as
> > changing the device tree to understand the new dtb rules, maybe even
> > falling back to the old definitions this likely breaks other users,
> > most notable U-Boot.
>
> GPMI is widely used, include i.MX8 still use GPMI. Does below patch fix
> boot problem?
My concern is that the new device tree (with the nand@0 subnode) is not
yet understood by other consumers of the DT sources, e.g. U‑Boot, older
Linux kernels (before the driver change), possibly barebox, and any
other consumer that relies on the kernel DT files.
Updating only the Linux driver to support both the new and old bindings
therefore solves only part of the problem. As long as these other
consumers do not understand both bindings as well, we cannot safely
update the shared DT sources. So I think the commit needs to be reverted.
In addition, the proposed fix in the driver is likely incomplete:
with the old binding there may be child nodes (i.e for partitions).
'np = of_get_next_child(this->pdev->dev.of_node, NULL);' does then find
a node whcih is not the node that actually describes the single NAND
chip.
An alternative approach could be to update the binding documentation
so that, specifically for the GPMI driver, the older binding is also
considered valid.
Once the driver supports both the old and the new binding, the old
form could be marked as deprecated, but still allowed for compatibility.
This would avoid breaking existing consumers while giving us a path
to migrate DTs over time.
Regards,
Max
>
> diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> index 51f595fbc834e..fb126a7c4a61e 100644
> --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> @@ -2680,6 +2680,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> {
> struct nand_chip *chip = &this->nand;
> struct mtd_info *mtd = nand_to_mtd(chip);
> + struct device_node *np;
> int ret;
>
> /* init the MTD data structures */
> @@ -2688,7 +2689,10 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
>
> /* init the nand_chip{}, we don't support a 16-bit NAND Flash bus. */
> nand_set_controller_data(chip, this);
> - nand_set_flash_node(chip, this->pdev->dev.of_node);
> + np = of_get_next_child(this->pdev->dev.of_node, NULL);
> + if (!np)
> + np = this->pdev->dev.of_node;
> + nand_set_flash_node(chip, np);
> chip->legacy.block_markbad = gpmi_block_markbad;
> chip->badblock_pattern = &gpmi_bbt_descr;
> chip->options |= NAND_NO_SUBPAGE_WRITE;
>
> Frank
> >
> >
> > So I don't see a quick fix other than reverting and living with the
> > dtb_check warning.
> >
> > Regards,
> > Max
> >
> > > >
> > > > Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
> > > > Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
> > > >
> > > > ---
> > > >
> > > > arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
> > > > arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
> > > > arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
> > > > .../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
> > > > arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
> > > > arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
> > > > arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
> > > > arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
> > > > .../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
> > > > arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
> > > > arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
> > > > .../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
> > > > arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
> > > > arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
> > > > arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
> > > > 15 files changed, 22 insertions(+), 82 deletions(-)
> > > >
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > index f452764fae00..547fb141ec0c 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > @@ -36,12 +36,8 @@ &clks {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-on-flash-bbt;
> > > > status = "okay";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &i2c3 {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > index 58ecdb87c6d4..9975b6ee433d 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > @@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-on-flash-bbt;
> > > > status = "okay";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &i2c1 {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > index 6f3becd33a5b..aa9a442852f4 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > @@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-on-flash-bbt;
> > > > status = "okay";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &i2c1 {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > index f2140dd8525f..85e278eb2016 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > @@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-on-flash-bbt;
> > > > status = "disabled";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &i2c3 {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > index 131a3428ddb8..c93dbc595ef6 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > @@ -260,14 +260,10 @@ fixed-link {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-on-flash-bbt;
> > > > #address-cells = <1>;
> > > > #size-cells = <0>;
> > > > status = "okay";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &i2c3 {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > index d29adfef5fdb..57297d6521cf 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > @@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-on-flash-bbt;
> > > > fsl,no-blockmark-swap;
> > > > status = "okay";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &i2c1 {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > index 40d530c1dc29..2a6bb5ff808a 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > @@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-on-flash-bbt;
> > > > status = "okay";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &i2c1 {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > index 776f6f78ee46..e34c8cbe36ae 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > @@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-on-flash-bbt;
> > > > status = "disabled";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &i2c1 {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > index 27e4d2aec137..a3ea1b208462 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > @@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-on-flash-bbt;
> > > > status = "disabled";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &i2c1 {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > index dc53f9286ffe..1992dfb53b45 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > @@ -296,13 +296,9 @@ &fec2 {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-on-flash-bbt;
> > > > fsl,no-blockmark-swap;
> > > > status = "okay";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &i2c2 {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > index eaed2cbf0c82..ec3c1e7301f4 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > @@ -160,15 +160,11 @@ &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > fsl,use-minimum-ecc;
> > > > + nand-on-flash-bbt;
> > > > + nand-ecc-mode = "hw";
> > > > + nand-ecc-strength = <8>;
> > > > + nand-ecc-step-size = <512>;
> > > > status = "okay";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - nand-ecc-mode = "hw";
> > > > - nand-ecc-strength = <8>;
> > > > - nand-ecc-step-size = <512>;
> > > > - };
> > > > };
> > > >
> > > > /* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > index 3dfd43b32055..43518bf07602 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > @@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-ecc-mode = "hw";
> > > > + nand-ecc-strength = <0>;
> > > > + nand-ecc-step-size = <0>;
> > > > + nand-on-flash-bbt;
> > > > status = "okay";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-ecc-mode = "hw";
> > > > - nand-ecc-strength = <0>;
> > > > - nand-ecc-step-size = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &iomuxc {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > index fc298f57bfff..83b9de17cee2 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > @@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-on-flash-bbt;
> > > > status = "disabled";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &uart1 {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > index 8ec18eae98a4..2d9f495660c9 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > @@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
> > > > &gpmi {
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > + nand-on-flash-bbt;
> > > > status = "okay";
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > &snvs_poweroff {
> > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > index a41dc4edfc0d..8666dcd7fe97 100644
> > > > --- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > +++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > @@ -375,14 +375,10 @@ &gpio7 {
> > > > /* NAND on such SKUs */
> > > > &gpmi {
> > > > fsl,use-minimum-ecc;
> > > > + nand-ecc-mode = "hw";
> > > > + nand-on-flash-bbt;
> > > > pinctrl-names = "default";
> > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > -
> > > > - nand@0 {
> > > > - reg = <0>;
> > > > - nand-ecc-mode = "hw";
> > > > - nand-on-flash-bbt;
> > > > - };
> > > > };
> > > >
> > > > /* On-module Power I2C */
> > > > --
> > > > 2.42.0
> > > >
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-02-25 17:40 ` Max Krummenacher
@ 2026-02-25 17:51 ` Frank Li
2026-02-26 12:47 ` Max Krummenacher
0 siblings, 1 reply; 18+ messages in thread
From: Frank Li @ 2026-02-25 17:51 UTC (permalink / raw)
To: Max Krummenacher
Cc: Francesco Dolcini, Max Krummenacher, Conor Dooley, Fabio Estevam,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel
On Wed, Feb 25, 2026 at 06:40:21PM +0100, Max Krummenacher wrote:
> On Thu, Feb 19, 2026 at 02:41:58PM -0500, Frank Li wrote:
> > On Thu, Feb 19, 2026 at 06:06:31PM +0100, Max Krummenacher wrote:
> > > Hi Frank
> > >
> > > On Thu, Feb 19, 2026 at 11:01:26AM -0500, Frank Li wrote:
> > > > On Thu, Feb 19, 2026 at 04:11:49PM +0100, max.oss.09@gmail.com wrote:
> > > > > From: Max Krummenacher <max.krummenacher@toradex.com>
> > > > >
> > > > > This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
> > > > >
> > > > > The change introduced a regression: at least Colibri iMX6ULL and
> > > > > Colibri iMX7 no longer boot with that commit applied, while they boot
> > > > > again after reverting it.
> > > > >
> > > > > Although this has only been verified on these two modules, the issue
> > > > > is expected to affect all device trees using the gpmi-nand driver.
> > > > >
> > > > > [ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
> > > > > [ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
> > > > > [ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
> > > > > [ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
> > > > > [ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
> > > > > [ 0.894686] 0x000000400000-0x000020000000 : "ubi"
> > > > > [ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
> > > > > ...
> > > > > [ 0.960443] ubi0: default fastmap pool size: 200
> > > > > [ 0.960476] ubi0: default fastmap WL pool size: 100
> > > > > [ 0.960500] ubi0: attaching mtd4
> > > > > [ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
> > > > > ...
> > > > > [ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
> > > > > [ 1.650029] UBI error: cannot attach mtd4
> > > > > ...
> > > > > [ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
> > > >
> > > > Can you help found the real reason why not boot?
> > > > nand@0 is preferred format for MTD raw nand.
> > > >
> > > > Frank
> > >
> > > I guess the root cause is that the driver for gpmi-nand predates the
> > > update of the binding rules which want the nand device described in
> > > a child node 'nand@0' also for nand controllers which only can
> > > control one nand chip.
> > >
> > > While it is possible to update the driver in the same patch set as
> > > changing the device tree to understand the new dtb rules, maybe even
> > > falling back to the old definitions this likely breaks other users,
> > > most notable U-Boot.
> >
> > GPMI is widely used, include i.MX8 still use GPMI. Does below patch fix
> > boot problem?
>
> My concern is that the new device tree (with the nand@0 subnode) is not
> yet understood by other consumers of the DT sources, e.g. U‑Boot, older
> Linux kernels (before the driver change), possibly barebox, and any
> other consumer that relies on the kernel DT files.
I understand, but we need move forward. we can keep both for transition.
>
> Updating only the Linux driver to support both the new and old bindings
> therefore solves only part of the problem. As long as these other
> consumers do not understand both bindings as well, we cannot safely
> update the shared DT sources. So I think the commit needs to be reverted.
>
> In addition, the proposed fix in the driver is likely incomplete:
> with the old binding there may be child nodes (i.e for partitions).
> 'np = of_get_next_child(this->pdev->dev.of_node, NULL);' does then find
> a node whcih is not the node that actually describes the single NAND
> chip.
I know it is incomplete, just want to check if it is the reason cause
boot failure.
>
> An alternative approach could be to update the binding documentation
> so that, specifically for the GPMI driver, the older binding is also
> considered valid.
Not easy to do that, I try many method to update yaml file. common nand
flash detect node node "nand-controller".
> Once the driver supports both the old and the new binding, the old
> form could be marked as deprecated, but still allowed for compatibility.
> This would avoid breaking existing consumers while giving us a path
> to migrate DTs over time.
Needn't revert all, just revert delete part, keep both to help migrate.
anyways, I need know if of_get_next_child(this->pdev->dev.of_node, NULL);
fix your problem.
Frank
>
> Regards,
> Max
>
> >
> > diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > index 51f595fbc834e..fb126a7c4a61e 100644
> > --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > @@ -2680,6 +2680,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > {
> > struct nand_chip *chip = &this->nand;
> > struct mtd_info *mtd = nand_to_mtd(chip);
> > + struct device_node *np;
> > int ret;
> >
> > /* init the MTD data structures */
> > @@ -2688,7 +2689,10 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> >
> > /* init the nand_chip{}, we don't support a 16-bit NAND Flash bus. */
> > nand_set_controller_data(chip, this);
> > - nand_set_flash_node(chip, this->pdev->dev.of_node);
> > + np = of_get_next_child(this->pdev->dev.of_node, NULL);
> > + if (!np)
> > + np = this->pdev->dev.of_node;
> > + nand_set_flash_node(chip, np);
> > chip->legacy.block_markbad = gpmi_block_markbad;
> > chip->badblock_pattern = &gpmi_bbt_descr;
> > chip->options |= NAND_NO_SUBPAGE_WRITE;
> >
> > Frank
> > >
> > >
> > > So I don't see a quick fix other than reverting and living with the
> > > dtb_check warning.
> > >
> > > Regards,
> > > Max
> > >
> > > > >
> > > > > Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
> > > > > Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
> > > > >
> > > > > ---
> > > > >
> > > > > arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
> > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
> > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
> > > > > .../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
> > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
> > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
> > > > > arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
> > > > > arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
> > > > > .../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
> > > > > arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
> > > > > arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
> > > > > .../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
> > > > > arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
> > > > > arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
> > > > > arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
> > > > > 15 files changed, 22 insertions(+), 82 deletions(-)
> > > > >
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > index f452764fae00..547fb141ec0c 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > @@ -36,12 +36,8 @@ &clks {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-on-flash-bbt;
> > > > > status = "okay";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &i2c3 {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > index 58ecdb87c6d4..9975b6ee433d 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > @@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-on-flash-bbt;
> > > > > status = "okay";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &i2c1 {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > index 6f3becd33a5b..aa9a442852f4 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > @@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-on-flash-bbt;
> > > > > status = "okay";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &i2c1 {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > index f2140dd8525f..85e278eb2016 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > @@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-on-flash-bbt;
> > > > > status = "disabled";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &i2c3 {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > index 131a3428ddb8..c93dbc595ef6 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > @@ -260,14 +260,10 @@ fixed-link {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-on-flash-bbt;
> > > > > #address-cells = <1>;
> > > > > #size-cells = <0>;
> > > > > status = "okay";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &i2c3 {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > index d29adfef5fdb..57297d6521cf 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > @@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-on-flash-bbt;
> > > > > fsl,no-blockmark-swap;
> > > > > status = "okay";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &i2c1 {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > index 40d530c1dc29..2a6bb5ff808a 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > @@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-on-flash-bbt;
> > > > > status = "okay";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &i2c1 {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > index 776f6f78ee46..e34c8cbe36ae 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > @@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-on-flash-bbt;
> > > > > status = "disabled";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &i2c1 {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > index 27e4d2aec137..a3ea1b208462 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > @@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-on-flash-bbt;
> > > > > status = "disabled";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &i2c1 {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > index dc53f9286ffe..1992dfb53b45 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > @@ -296,13 +296,9 @@ &fec2 {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-on-flash-bbt;
> > > > > fsl,no-blockmark-swap;
> > > > > status = "okay";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &i2c2 {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > index eaed2cbf0c82..ec3c1e7301f4 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > @@ -160,15 +160,11 @@ &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > fsl,use-minimum-ecc;
> > > > > + nand-on-flash-bbt;
> > > > > + nand-ecc-mode = "hw";
> > > > > + nand-ecc-strength = <8>;
> > > > > + nand-ecc-step-size = <512>;
> > > > > status = "okay";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - nand-ecc-mode = "hw";
> > > > > - nand-ecc-strength = <8>;
> > > > > - nand-ecc-step-size = <512>;
> > > > > - };
> > > > > };
> > > > >
> > > > > /* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > index 3dfd43b32055..43518bf07602 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > @@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-ecc-mode = "hw";
> > > > > + nand-ecc-strength = <0>;
> > > > > + nand-ecc-step-size = <0>;
> > > > > + nand-on-flash-bbt;
> > > > > status = "okay";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-ecc-mode = "hw";
> > > > > - nand-ecc-strength = <0>;
> > > > > - nand-ecc-step-size = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &iomuxc {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > index fc298f57bfff..83b9de17cee2 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > @@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-on-flash-bbt;
> > > > > status = "disabled";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &uart1 {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > index 8ec18eae98a4..2d9f495660c9 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > @@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
> > > > > &gpmi {
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > + nand-on-flash-bbt;
> > > > > status = "okay";
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > &snvs_poweroff {
> > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > index a41dc4edfc0d..8666dcd7fe97 100644
> > > > > --- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > @@ -375,14 +375,10 @@ &gpio7 {
> > > > > /* NAND on such SKUs */
> > > > > &gpmi {
> > > > > fsl,use-minimum-ecc;
> > > > > + nand-ecc-mode = "hw";
> > > > > + nand-on-flash-bbt;
> > > > > pinctrl-names = "default";
> > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > -
> > > > > - nand@0 {
> > > > > - reg = <0>;
> > > > > - nand-ecc-mode = "hw";
> > > > > - nand-on-flash-bbt;
> > > > > - };
> > > > > };
> > > > >
> > > > > /* On-module Power I2C */
> > > > > --
> > > > > 2.42.0
> > > > >
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-02-25 17:51 ` Frank Li
@ 2026-02-26 12:47 ` Max Krummenacher
2026-02-26 15:12 ` Frank Li
0 siblings, 1 reply; 18+ messages in thread
From: Max Krummenacher @ 2026-02-26 12:47 UTC (permalink / raw)
To: Frank Li
Cc: Francesco Dolcini, Max Krummenacher, Conor Dooley, Fabio Estevam,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel
On Wed, Feb 25, 2026 at 12:51:32PM -0500, Frank Li wrote:
> On Wed, Feb 25, 2026 at 06:40:21PM +0100, Max Krummenacher wrote:
> > On Thu, Feb 19, 2026 at 02:41:58PM -0500, Frank Li wrote:
> > > On Thu, Feb 19, 2026 at 06:06:31PM +0100, Max Krummenacher wrote:
> > > > Hi Frank
> > > >
> > > > On Thu, Feb 19, 2026 at 11:01:26AM -0500, Frank Li wrote:
> > > > > On Thu, Feb 19, 2026 at 04:11:49PM +0100, max.oss.09@gmail.com wrote:
> > > > > > From: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > >
> > > > > > This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
> > > > > >
> > > > > > The change introduced a regression: at least Colibri iMX6ULL and
> > > > > > Colibri iMX7 no longer boot with that commit applied, while they boot
> > > > > > again after reverting it.
> > > > > >
> > > > > > Although this has only been verified on these two modules, the issue
> > > > > > is expected to affect all device trees using the gpmi-nand driver.
> > > > > >
> > > > > > [ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
> > > > > > [ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
> > > > > > [ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
> > > > > > [ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
> > > > > > [ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
> > > > > > [ 0.894686] 0x000000400000-0x000020000000 : "ubi"
> > > > > > [ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
> > > > > > ...
> > > > > > [ 0.960443] ubi0: default fastmap pool size: 200
> > > > > > [ 0.960476] ubi0: default fastmap WL pool size: 100
> > > > > > [ 0.960500] ubi0: attaching mtd4
> > > > > > [ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
> > > > > > ...
> > > > > > [ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
> > > > > > [ 1.650029] UBI error: cannot attach mtd4
> > > > > > ...
> > > > > > [ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
> > > > >
> > > > > Can you help found the real reason why not boot?
> > > > > nand@0 is preferred format for MTD raw nand.
> > > > >
> > > > > Frank
> > > >
> > > > I guess the root cause is that the driver for gpmi-nand predates the
> > > > update of the binding rules which want the nand device described in
> > > > a child node 'nand@0' also for nand controllers which only can
> > > > control one nand chip.
> > > >
> > > > While it is possible to update the driver in the same patch set as
> > > > changing the device tree to understand the new dtb rules, maybe even
> > > > falling back to the old definitions this likely breaks other users,
> > > > most notable U-Boot.
> > >
> > > GPMI is widely used, include i.MX8 still use GPMI. Does below patch fix
> > > boot problem?
> >
> > My concern is that the new device tree (with the nand@0 subnode) is not
> > yet understood by other consumers of the DT sources, e.g. U‑Boot, older
> > Linux kernels (before the driver change), possibly barebox, and any
> > other consumer that relies on the kernel DT files.
>
> I understand, but we need move forward. we can keep both for transition.
>
> >
> > Updating only the Linux driver to support both the new and old bindings
> > therefore solves only part of the problem. As long as these other
> > consumers do not understand both bindings as well, we cannot safely
> > update the shared DT sources. So I think the commit needs to be reverted.
> >
> > In addition, the proposed fix in the driver is likely incomplete:
> > with the old binding there may be child nodes (i.e for partitions).
> > 'np = of_get_next_child(this->pdev->dev.of_node, NULL);' does then find
> > a node whcih is not the node that actually describes the single NAND
> > chip.
>
> I know it is incomplete, just want to check if it is the reason cause
> boot failure.
>
> >
> > An alternative approach could be to update the binding documentation
> > so that, specifically for the GPMI driver, the older binding is also
> > considered valid.
>
> Not easy to do that, I try many method to update yaml file. common nand
> flash detect node node "nand-controller".
>
> > Once the driver supports both the old and the new binding, the old
> > form could be marked as deprecated, but still allowed for compatibility.
> > This would avoid breaking existing consumers while giving us a path
> > to migrate DTs over time.
>
> Needn't revert all, just revert delete part, keep both to help migrate.
>
> anyways, I need know if of_get_next_child(this->pdev->dev.of_node, NULL);
> fix your problem.
I tested the following on Colibri iMX7.
kernel 7.0-rc1 and DTB are built from an untouched kernel at commit
7dff99b35460 ("Remove WARN_ALL_UNSEEDED_RANDOM kernel config option").
kernel 7.0-rc1 patched has the sources as above plus the changes you
propose to the gpmi-nand driver.
DTB-reverted has the sources as above plus commit 8124b4a4a96b ("ARM:
dts: imx: move nand related property under nand@0") reverted.
DTB DTB-reverted
kernel 7.0-rc1 fail boots
kernel 7.0-rc1 patched boots boots
Regards
Max
>
> Frank
> >
> > Regards,
> > Max
> >
> > >
> > > diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > index 51f595fbc834e..fb126a7c4a61e 100644
> > > --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > @@ -2680,6 +2680,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > {
> > > struct nand_chip *chip = &this->nand;
> > > struct mtd_info *mtd = nand_to_mtd(chip);
> > > + struct device_node *np;
> > > int ret;
> > >
> > > /* init the MTD data structures */
> > > @@ -2688,7 +2689,10 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > >
> > > /* init the nand_chip{}, we don't support a 16-bit NAND Flash bus. */
> > > nand_set_controller_data(chip, this);
> > > - nand_set_flash_node(chip, this->pdev->dev.of_node);
> > > + np = of_get_next_child(this->pdev->dev.of_node, NULL);
> > > + if (!np)
> > > + np = this->pdev->dev.of_node;
> > > + nand_set_flash_node(chip, np);
> > > chip->legacy.block_markbad = gpmi_block_markbad;
> > > chip->badblock_pattern = &gpmi_bbt_descr;
> > > chip->options |= NAND_NO_SUBPAGE_WRITE;
> > >
> > > Frank
> > > >
> > > >
> > > > So I don't see a quick fix other than reverting and living with the
> > > > dtb_check warning.
> > > >
> > > > Regards,
> > > > Max
> > > >
> > > > > >
> > > > > > Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
> > > > > > Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > >
> > > > > > ---
> > > > > >
> > > > > > arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
> > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
> > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
> > > > > > .../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
> > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
> > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
> > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
> > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
> > > > > > .../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
> > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
> > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
> > > > > > .../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
> > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
> > > > > > arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
> > > > > > arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
> > > > > > 15 files changed, 22 insertions(+), 82 deletions(-)
> > > > > >
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > index f452764fae00..547fb141ec0c 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > @@ -36,12 +36,8 @@ &clks {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-on-flash-bbt;
> > > > > > status = "okay";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &i2c3 {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > index 58ecdb87c6d4..9975b6ee433d 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > @@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-on-flash-bbt;
> > > > > > status = "okay";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &i2c1 {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > index 6f3becd33a5b..aa9a442852f4 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > @@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-on-flash-bbt;
> > > > > > status = "okay";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &i2c1 {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > index f2140dd8525f..85e278eb2016 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > @@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-on-flash-bbt;
> > > > > > status = "disabled";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &i2c3 {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > index 131a3428ddb8..c93dbc595ef6 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > @@ -260,14 +260,10 @@ fixed-link {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-on-flash-bbt;
> > > > > > #address-cells = <1>;
> > > > > > #size-cells = <0>;
> > > > > > status = "okay";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &i2c3 {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > index d29adfef5fdb..57297d6521cf 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > @@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-on-flash-bbt;
> > > > > > fsl,no-blockmark-swap;
> > > > > > status = "okay";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &i2c1 {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > index 40d530c1dc29..2a6bb5ff808a 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > @@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-on-flash-bbt;
> > > > > > status = "okay";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &i2c1 {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > index 776f6f78ee46..e34c8cbe36ae 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > @@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-on-flash-bbt;
> > > > > > status = "disabled";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &i2c1 {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > index 27e4d2aec137..a3ea1b208462 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > @@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-on-flash-bbt;
> > > > > > status = "disabled";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &i2c1 {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > index dc53f9286ffe..1992dfb53b45 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > @@ -296,13 +296,9 @@ &fec2 {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-on-flash-bbt;
> > > > > > fsl,no-blockmark-swap;
> > > > > > status = "okay";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &i2c2 {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > index eaed2cbf0c82..ec3c1e7301f4 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > @@ -160,15 +160,11 @@ &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > fsl,use-minimum-ecc;
> > > > > > + nand-on-flash-bbt;
> > > > > > + nand-ecc-mode = "hw";
> > > > > > + nand-ecc-strength = <8>;
> > > > > > + nand-ecc-step-size = <512>;
> > > > > > status = "okay";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - nand-ecc-mode = "hw";
> > > > > > - nand-ecc-strength = <8>;
> > > > > > - nand-ecc-step-size = <512>;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > /* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > index 3dfd43b32055..43518bf07602 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > @@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-ecc-mode = "hw";
> > > > > > + nand-ecc-strength = <0>;
> > > > > > + nand-ecc-step-size = <0>;
> > > > > > + nand-on-flash-bbt;
> > > > > > status = "okay";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-ecc-mode = "hw";
> > > > > > - nand-ecc-strength = <0>;
> > > > > > - nand-ecc-step-size = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &iomuxc {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > index fc298f57bfff..83b9de17cee2 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > @@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-on-flash-bbt;
> > > > > > status = "disabled";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &uart1 {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > index 8ec18eae98a4..2d9f495660c9 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > @@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
> > > > > > &gpmi {
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > + nand-on-flash-bbt;
> > > > > > status = "okay";
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > &snvs_poweroff {
> > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > index a41dc4edfc0d..8666dcd7fe97 100644
> > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > @@ -375,14 +375,10 @@ &gpio7 {
> > > > > > /* NAND on such SKUs */
> > > > > > &gpmi {
> > > > > > fsl,use-minimum-ecc;
> > > > > > + nand-ecc-mode = "hw";
> > > > > > + nand-on-flash-bbt;
> > > > > > pinctrl-names = "default";
> > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > -
> > > > > > - nand@0 {
> > > > > > - reg = <0>;
> > > > > > - nand-ecc-mode = "hw";
> > > > > > - nand-on-flash-bbt;
> > > > > > - };
> > > > > > };
> > > > > >
> > > > > > /* On-module Power I2C */
> > > > > > --
> > > > > > 2.42.0
> > > > > >
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-02-26 12:47 ` Max Krummenacher
@ 2026-02-26 15:12 ` Frank Li
2026-03-02 10:53 ` Max Krummenacher
0 siblings, 1 reply; 18+ messages in thread
From: Frank Li @ 2026-02-26 15:12 UTC (permalink / raw)
To: Max Krummenacher
Cc: Francesco Dolcini, Max Krummenacher, Conor Dooley, Fabio Estevam,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel
On Thu, Feb 26, 2026 at 01:47:39PM +0100, Max Krummenacher wrote:
> On Wed, Feb 25, 2026 at 12:51:32PM -0500, Frank Li wrote:
> > On Wed, Feb 25, 2026 at 06:40:21PM +0100, Max Krummenacher wrote:
> > > On Thu, Feb 19, 2026 at 02:41:58PM -0500, Frank Li wrote:
> > > > On Thu, Feb 19, 2026 at 06:06:31PM +0100, Max Krummenacher wrote:
> > > > > Hi Frank
> > > > >
> > > > > On Thu, Feb 19, 2026 at 11:01:26AM -0500, Frank Li wrote:
> > > > > > On Thu, Feb 19, 2026 at 04:11:49PM +0100, max.oss.09@gmail.com wrote:
> > > > > > > From: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > > >
> > > > > > > This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
> > > > > > >
> > > > > > > The change introduced a regression: at least Colibri iMX6ULL and
> > > > > > > Colibri iMX7 no longer boot with that commit applied, while they boot
> > > > > > > again after reverting it.
> > > > > > >
> > > > > > > Although this has only been verified on these two modules, the issue
> > > > > > > is expected to affect all device trees using the gpmi-nand driver.
> > > > > > >
> > > > > > > [ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
> > > > > > > [ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
> > > > > > > [ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
> > > > > > > [ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
> > > > > > > [ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
> > > > > > > [ 0.894686] 0x000000400000-0x000020000000 : "ubi"
> > > > > > > [ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
> > > > > > > ...
> > > > > > > [ 0.960443] ubi0: default fastmap pool size: 200
> > > > > > > [ 0.960476] ubi0: default fastmap WL pool size: 100
> > > > > > > [ 0.960500] ubi0: attaching mtd4
> > > > > > > [ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
> > > > > > > ...
> > > > > > > [ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
> > > > > > > [ 1.650029] UBI error: cannot attach mtd4
> > > > > > > ...
> > > > > > > [ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
> > > > > >
> > > > > > Can you help found the real reason why not boot?
> > > > > > nand@0 is preferred format for MTD raw nand.
> > > > > >
> > > > > > Frank
> > > > >
> > > > > I guess the root cause is that the driver for gpmi-nand predates the
> > > > > update of the binding rules which want the nand device described in
> > > > > a child node 'nand@0' also for nand controllers which only can
> > > > > control one nand chip.
> > > > >
> > > > > While it is possible to update the driver in the same patch set as
> > > > > changing the device tree to understand the new dtb rules, maybe even
> > > > > falling back to the old definitions this likely breaks other users,
> > > > > most notable U-Boot.
> > > >
> > > > GPMI is widely used, include i.MX8 still use GPMI. Does below patch fix
> > > > boot problem?
> > >
> > > My concern is that the new device tree (with the nand@0 subnode) is not
> > > yet understood by other consumers of the DT sources, e.g. U‑Boot, older
> > > Linux kernels (before the driver change), possibly barebox, and any
> > > other consumer that relies on the kernel DT files.
> >
> > I understand, but we need move forward. we can keep both for transition.
> >
> > >
> > > Updating only the Linux driver to support both the new and old bindings
> > > therefore solves only part of the problem. As long as these other
> > > consumers do not understand both bindings as well, we cannot safely
> > > update the shared DT sources. So I think the commit needs to be reverted.
> > >
> > > In addition, the proposed fix in the driver is likely incomplete:
> > > with the old binding there may be child nodes (i.e for partitions).
> > > 'np = of_get_next_child(this->pdev->dev.of_node, NULL);' does then find
> > > a node whcih is not the node that actually describes the single NAND
> > > chip.
> >
> > I know it is incomplete, just want to check if it is the reason cause
> > boot failure.
> >
> > >
> > > An alternative approach could be to update the binding documentation
> > > so that, specifically for the GPMI driver, the older binding is also
> > > considered valid.
> >
> > Not easy to do that, I try many method to update yaml file. common nand
> > flash detect node node "nand-controller".
> >
> > > Once the driver supports both the old and the new binding, the old
> > > form could be marked as deprecated, but still allowed for compatibility.
> > > This would avoid breaking existing consumers while giving us a path
> > > to migrate DTs over time.
> >
> > Needn't revert all, just revert delete part, keep both to help migrate.
> >
> > anyways, I need know if of_get_next_child(this->pdev->dev.of_node, NULL);
> > fix your problem.
>
> I tested the following on Colibri iMX7.
>
> kernel 7.0-rc1 and DTB are built from an untouched kernel at commit
> 7dff99b35460 ("Remove WARN_ALL_UNSEEDED_RANDOM kernel config option").
>
> kernel 7.0-rc1 patched has the sources as above plus the changes you
> propose to the gpmi-nand driver.
>
> DTB-reverted has the sources as above plus commit 8124b4a4a96b ("ARM:
> dts: imx: move nand related property under nand@0") reverted.
>
> DTB DTB-reverted
>
> kernel 7.0-rc1 fail boots
>
> kernel 7.0-rc1 patched boots boots
Thanks you for testing. I will work a formal patch for it. Can you help
rework you patch, which keep both properties, just revert deleted part
and keep everything nand@0, so it help transistion. you also start work
uboot part.
I plan give additional 1 year to do transistion. This type layout actually
exist for long time.
Frank
>
> Regards
> Max
>
> >
> > Frank
> > >
> > > Regards,
> > > Max
> > >
> > > >
> > > > diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > index 51f595fbc834e..fb126a7c4a61e 100644
> > > > --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > @@ -2680,6 +2680,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > > {
> > > > struct nand_chip *chip = &this->nand;
> > > > struct mtd_info *mtd = nand_to_mtd(chip);
> > > > + struct device_node *np;
> > > > int ret;
> > > >
> > > > /* init the MTD data structures */
> > > > @@ -2688,7 +2689,10 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > >
> > > > /* init the nand_chip{}, we don't support a 16-bit NAND Flash bus. */
> > > > nand_set_controller_data(chip, this);
> > > > - nand_set_flash_node(chip, this->pdev->dev.of_node);
> > > > + np = of_get_next_child(this->pdev->dev.of_node, NULL);
> > > > + if (!np)
> > > > + np = this->pdev->dev.of_node;
> > > > + nand_set_flash_node(chip, np);
> > > > chip->legacy.block_markbad = gpmi_block_markbad;
> > > > chip->badblock_pattern = &gpmi_bbt_descr;
> > > > chip->options |= NAND_NO_SUBPAGE_WRITE;
> > > >
> > > > Frank
> > > > >
> > > > >
> > > > > So I don't see a quick fix other than reverting and living with the
> > > > > dtb_check warning.
> > > > >
> > > > > Regards,
> > > > > Max
> > > > >
> > > > > > >
> > > > > > > Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
> > > > > > > Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > > >
> > > > > > > ---
> > > > > > >
> > > > > > > arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
> > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
> > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
> > > > > > > .../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
> > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
> > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
> > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
> > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
> > > > > > > .../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
> > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
> > > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
> > > > > > > .../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
> > > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
> > > > > > > arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
> > > > > > > arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
> > > > > > > 15 files changed, 22 insertions(+), 82 deletions(-)
> > > > > > >
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > index f452764fae00..547fb141ec0c 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > @@ -36,12 +36,8 @@ &clks {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > status = "okay";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &i2c3 {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > index 58ecdb87c6d4..9975b6ee433d 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > @@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > status = "okay";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &i2c1 {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > index 6f3becd33a5b..aa9a442852f4 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > @@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > status = "okay";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &i2c1 {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > index f2140dd8525f..85e278eb2016 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > @@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > status = "disabled";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &i2c3 {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > index 131a3428ddb8..c93dbc595ef6 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > @@ -260,14 +260,10 @@ fixed-link {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > #address-cells = <1>;
> > > > > > > #size-cells = <0>;
> > > > > > > status = "okay";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &i2c3 {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > index d29adfef5fdb..57297d6521cf 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > @@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > fsl,no-blockmark-swap;
> > > > > > > status = "okay";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &i2c1 {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > index 40d530c1dc29..2a6bb5ff808a 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > @@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > status = "okay";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &i2c1 {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > index 776f6f78ee46..e34c8cbe36ae 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > @@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > status = "disabled";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &i2c1 {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > index 27e4d2aec137..a3ea1b208462 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > @@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > status = "disabled";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &i2c1 {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > index dc53f9286ffe..1992dfb53b45 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > @@ -296,13 +296,9 @@ &fec2 {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > fsl,no-blockmark-swap;
> > > > > > > status = "okay";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &i2c2 {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > index eaed2cbf0c82..ec3c1e7301f4 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > @@ -160,15 +160,11 @@ &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > fsl,use-minimum-ecc;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > + nand-ecc-mode = "hw";
> > > > > > > + nand-ecc-strength = <8>;
> > > > > > > + nand-ecc-step-size = <512>;
> > > > > > > status = "okay";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - nand-ecc-mode = "hw";
> > > > > > > - nand-ecc-strength = <8>;
> > > > > > > - nand-ecc-step-size = <512>;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > /* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > index 3dfd43b32055..43518bf07602 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > @@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-ecc-mode = "hw";
> > > > > > > + nand-ecc-strength = <0>;
> > > > > > > + nand-ecc-step-size = <0>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > status = "okay";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-ecc-mode = "hw";
> > > > > > > - nand-ecc-strength = <0>;
> > > > > > > - nand-ecc-step-size = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &iomuxc {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > index fc298f57bfff..83b9de17cee2 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > @@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > status = "disabled";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &uart1 {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > index 8ec18eae98a4..2d9f495660c9 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > @@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
> > > > > > > &gpmi {
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > + nand-on-flash-bbt;
> > > > > > > status = "okay";
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > &snvs_poweroff {
> > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > index a41dc4edfc0d..8666dcd7fe97 100644
> > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > @@ -375,14 +375,10 @@ &gpio7 {
> > > > > > > /* NAND on such SKUs */
> > > > > > > &gpmi {
> > > > > > > fsl,use-minimum-ecc;
> > > > > > > + nand-ecc-mode = "hw";
> > > > > > > + nand-on-flash-bbt;
> > > > > > > pinctrl-names = "default";
> > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > -
> > > > > > > - nand@0 {
> > > > > > > - reg = <0>;
> > > > > > > - nand-ecc-mode = "hw";
> > > > > > > - nand-on-flash-bbt;
> > > > > > > - };
> > > > > > > };
> > > > > > >
> > > > > > > /* On-module Power I2C */
> > > > > > > --
> > > > > > > 2.42.0
> > > > > > >
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-02-26 15:12 ` Frank Li
@ 2026-03-02 10:53 ` Max Krummenacher
2026-03-02 15:49 ` Frank Li
0 siblings, 1 reply; 18+ messages in thread
From: Max Krummenacher @ 2026-03-02 10:53 UTC (permalink / raw)
To: Frank Li
Cc: Francesco Dolcini, Max Krummenacher, Conor Dooley, Fabio Estevam,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel
Am Donnerstag, dem 26.02.2026 um 10:12 -0500 schrieb Frank Li:
> On Thu, Feb 26, 2026 at 01:47:39PM +0100, Max Krummenacher wrote:
> > On Wed, Feb 25, 2026 at 12:51:32PM -0500, Frank Li wrote:
> > > On Wed, Feb 25, 2026 at 06:40:21PM +0100, Max Krummenacher wrote:
> > > > On Thu, Feb 19, 2026 at 02:41:58PM -0500, Frank Li wrote:
> > > > > On Thu, Feb 19, 2026 at 06:06:31PM +0100, Max Krummenacher wrote:
> > > > > > Hi Frank
> > > > > >
> > > > > > On Thu, Feb 19, 2026 at 11:01:26AM -0500, Frank Li wrote:
> > > > > > > On Thu, Feb 19, 2026 at 04:11:49PM +0100, max.oss.09@gmail.com wrote:
> > > > > > > > From: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > > > >
> > > > > > > > This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
> > > > > > > >
> > > > > > > > The change introduced a regression: at least Colibri iMX6ULL and
> > > > > > > > Colibri iMX7 no longer boot with that commit applied, while they boot
> > > > > > > > again after reverting it.
> > > > > > > >
> > > > > > > > Although this has only been verified on these two modules, the issue
> > > > > > > > is expected to affect all device trees using the gpmi-nand driver.
> > > > > > > >
> > > > > > > > [ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
> > > > > > > > [ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
> > > > > > > > [ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
> > > > > > > > [ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
> > > > > > > > [ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
> > > > > > > > [ 0.894686] 0x000000400000-0x000020000000 : "ubi"
> > > > > > > > [ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
> > > > > > > > ...
> > > > > > > > [ 0.960443] ubi0: default fastmap pool size: 200
> > > > > > > > [ 0.960476] ubi0: default fastmap WL pool size: 100
> > > > > > > > [ 0.960500] ubi0: attaching mtd4
> > > > > > > > [ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
> > > > > > > > ...
> > > > > > > > [ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
> > > > > > > > [ 1.650029] UBI error: cannot attach mtd4
> > > > > > > > ...
> > > > > > > > [ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
> > > > > > >
> > > > > > > Can you help found the real reason why not boot?
> > > > > > > nand@0 is preferred format for MTD raw nand.
> > > > > > >
> > > > > > > Frank
> > > > > >
> > > > > > I guess the root cause is that the driver for gpmi-nand predates the
> > > > > > update of the binding rules which want the nand device described in
> > > > > > a child node 'nand@0' also for nand controllers which only can
> > > > > > control one nand chip.
> > > > > >
> > > > > > While it is possible to update the driver in the same patch set as
> > > > > > changing the device tree to understand the new dtb rules, maybe even
> > > > > > falling back to the old definitions this likely breaks other users,
> > > > > > most notable U-Boot.
> > > > >
> > > > > GPMI is widely used, include i.MX8 still use GPMI. Does below patch fix
> > > > > boot problem?
> > > >
> > > > My concern is that the new device tree (with the nand@0 subnode) is not
> > > > yet understood by other consumers of the DT sources, e.g. U‑Boot, older
> > > > Linux kernels (before the driver change), possibly barebox, and any
> > > > other consumer that relies on the kernel DT files.
> > >
> > > I understand, but we need move forward. we can keep both for transition.
> > >
> > > >
> > > > Updating only the Linux driver to support both the new and old bindings
> > > > therefore solves only part of the problem. As long as these other
> > > > consumers do not understand both bindings as well, we cannot safely
> > > > update the shared DT sources. So I think the commit needs to be reverted.
> > > >
> > > > In addition, the proposed fix in the driver is likely incomplete:
> > > > with the old binding there may be child nodes (i.e for partitions).
> > > > 'np = of_get_next_child(this->pdev->dev.of_node, NULL);' does then find
> > > > a node whcih is not the node that actually describes the single NAND
> > > > chip.
> > >
> > > I know it is incomplete, just want to check if it is the reason cause
> > > boot failure.
> > >
> > > >
> > > > An alternative approach could be to update the binding documentation
> > > > so that, specifically for the GPMI driver, the older binding is also
> > > > considered valid.
> > >
> > > Not easy to do that, I try many method to update yaml file. common nand
> > > flash detect node node "nand-controller".
> > >
> > > > Once the driver supports both the old and the new binding, the old
> > > > form could be marked as deprecated, but still allowed for compatibility.
> > > > This would avoid breaking existing consumers while giving us a path
> > > > to migrate DTs over time.
> > >
> > > Needn't revert all, just revert delete part, keep both to help migrate.
> > >
> > > anyways, I need know if of_get_next_child(this->pdev->dev.of_node, NULL);
> > > fix your problem.
> >
> > I tested the following on Colibri iMX7.
> >
> > kernel 7.0-rc1 and DTB are built from an untouched kernel at commit
> > 7dff99b35460 ("Remove WARN_ALL_UNSEEDED_RANDOM kernel config option").
> >
> > kernel 7.0-rc1 patched has the sources as above plus the changes you
> > propose to the gpmi-nand driver.
> >
> > DTB-reverted has the sources as above plus commit 8124b4a4a96b ("ARM:
> > dts: imx: move nand related property under nand@0") reverted.
> >
> > DTB DTB-reverted
> >
> > kernel 7.0-rc1 fail boots
> >
> > kernel 7.0-rc1 patched boots boots
>
> Thanks you for testing. I will work a formal patch for it. Can you help
> rework you patch, which keep both properties, just revert deleted part
> and keep everything nand@0, so it help transistion. you also start work
> uboot part.
We are happy to test any patch proposals on our hardware for U-Boot
and Linux, with and without the nand@0 subnode.
Please note that the current state as of Linux v7.0-rc2 is broken
for our NAND-based modules, and our CI no longer produces any useful
results as a consequence.
I strongly believe that, as an immediate first step, the commit
that moved the DT NAND chip configuration into its subnode should
be reverted.
Regards
Max
>
> I plan give additional 1 year to do transistion. This type layout actually
> exist for long time.
>
> Frank
>
> >
> > Regards
> > Max
> >
> > >
> > > Frank
> > > >
> > > > Regards,
> > > > Max
> > > >
> > > > >
> > > > > diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > index 51f595fbc834e..fb126a7c4a61e 100644
> > > > > --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > @@ -2680,6 +2680,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > > > {
> > > > > struct nand_chip *chip = &this->nand;
> > > > > struct mtd_info *mtd = nand_to_mtd(chip);
> > > > > + struct device_node *np;
> > > > > int ret;
> > > > >
> > > > > /* init the MTD data structures */
> > > > > @@ -2688,7 +2689,10 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > > >
> > > > > /* init the nand_chip{}, we don't support a 16-bit NAND Flash bus. */
> > > > > nand_set_controller_data(chip, this);
> > > > > - nand_set_flash_node(chip, this->pdev->dev.of_node);
> > > > > + np = of_get_next_child(this->pdev->dev.of_node, NULL);
> > > > > + if (!np)
> > > > > + np = this->pdev->dev.of_node;
> > > > > + nand_set_flash_node(chip, np);
> > > > > chip->legacy.block_markbad = gpmi_block_markbad;
> > > > > chip->badblock_pattern = &gpmi_bbt_descr;
> > > > > chip->options |= NAND_NO_SUBPAGE_WRITE;
> > > > >
> > > > > Frank
> > > > > >
> > > > > >
> > > > > > So I don't see a quick fix other than reverting and living with the
> > > > > > dtb_check warning.
> > > > > >
> > > > > > Regards,
> > > > > > Max
> > > > > >
> > > > > > > >
> > > > > > > > Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
> > > > > > > > Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > > > >
> > > > > > > > ---
> > > > > > > >
> > > > > > > > arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
> > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
> > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
> > > > > > > > .../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
> > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
> > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
> > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
> > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
> > > > > > > > .../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
> > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
> > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
> > > > > > > > .../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
> > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
> > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
> > > > > > > > arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
> > > > > > > > 15 files changed, 22 insertions(+), 82 deletions(-)
> > > > > > > >
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > index f452764fae00..547fb141ec0c 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > @@ -36,12 +36,8 @@ &clks {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > status = "okay";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &i2c3 {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > index 58ecdb87c6d4..9975b6ee433d 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > @@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > status = "okay";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &i2c1 {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > index 6f3becd33a5b..aa9a442852f4 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > @@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > status = "okay";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &i2c1 {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > index f2140dd8525f..85e278eb2016 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > @@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > status = "disabled";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &i2c3 {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > index 131a3428ddb8..c93dbc595ef6 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > @@ -260,14 +260,10 @@ fixed-link {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > #address-cells = <1>;
> > > > > > > > #size-cells = <0>;
> > > > > > > > status = "okay";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &i2c3 {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > index d29adfef5fdb..57297d6521cf 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > @@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > fsl,no-blockmark-swap;
> > > > > > > > status = "okay";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &i2c1 {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > index 40d530c1dc29..2a6bb5ff808a 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > @@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > status = "okay";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &i2c1 {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > index 776f6f78ee46..e34c8cbe36ae 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > @@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > status = "disabled";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &i2c1 {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > index 27e4d2aec137..a3ea1b208462 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > @@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > status = "disabled";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &i2c1 {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > index dc53f9286ffe..1992dfb53b45 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > @@ -296,13 +296,9 @@ &fec2 {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > fsl,no-blockmark-swap;
> > > > > > > > status = "okay";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &i2c2 {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > index eaed2cbf0c82..ec3c1e7301f4 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > @@ -160,15 +160,11 @@ &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > fsl,use-minimum-ecc;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > + nand-ecc-strength = <8>;
> > > > > > > > + nand-ecc-step-size = <512>;
> > > > > > > > status = "okay";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > - nand-ecc-strength = <8>;
> > > > > > > > - nand-ecc-step-size = <512>;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > /* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > index 3dfd43b32055..43518bf07602 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > @@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > + nand-ecc-strength = <0>;
> > > > > > > > + nand-ecc-step-size = <0>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > status = "okay";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > - nand-ecc-strength = <0>;
> > > > > > > > - nand-ecc-step-size = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &iomuxc {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > index fc298f57bfff..83b9de17cee2 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > @@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > status = "disabled";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &uart1 {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > index 8ec18eae98a4..2d9f495660c9 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > @@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
> > > > > > > > &gpmi {
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > status = "okay";
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > &snvs_poweroff {
> > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > index a41dc4edfc0d..8666dcd7fe97 100644
> > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > @@ -375,14 +375,10 @@ &gpio7 {
> > > > > > > > /* NAND on such SKUs */
> > > > > > > > &gpmi {
> > > > > > > > fsl,use-minimum-ecc;
> > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > + nand-on-flash-bbt;
> > > > > > > > pinctrl-names = "default";
> > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > -
> > > > > > > > - nand@0 {
> > > > > > > > - reg = <0>;
> > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > - nand-on-flash-bbt;
> > > > > > > > - };
> > > > > > > > };
> > > > > > > >
> > > > > > > > /* On-module Power I2C */
> > > > > > > > --
> > > > > > > > 2.42.0
> > > > > > > >
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-03-02 10:53 ` Max Krummenacher
@ 2026-03-02 15:49 ` Frank Li
2026-03-05 20:05 ` Frank Li
2026-03-09 10:41 ` Max Krummenacher
0 siblings, 2 replies; 18+ messages in thread
From: Frank Li @ 2026-03-02 15:49 UTC (permalink / raw)
To: max.krummenacher
Cc: Francesco Dolcini, Max Krummenacher, Conor Dooley, Fabio Estevam,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel
On Mon, Mar 02, 2026 at 11:53:00AM +0100, Max Krummenacher wrote:
> Am Donnerstag, dem 26.02.2026 um 10:12 -0500 schrieb Frank Li:
> > On Thu, Feb 26, 2026 at 01:47:39PM +0100, Max Krummenacher wrote:
> > > On Wed, Feb 25, 2026 at 12:51:32PM -0500, Frank Li wrote:
> > > > On Wed, Feb 25, 2026 at 06:40:21PM +0100, Max Krummenacher wrote:
> > > > > On Thu, Feb 19, 2026 at 02:41:58PM -0500, Frank Li wrote:
> > > > > > On Thu, Feb 19, 2026 at 06:06:31PM +0100, Max Krummenacher wrote:
> > > > > > > Hi Frank
> > > > > > >
> > > > > > > On Thu, Feb 19, 2026 at 11:01:26AM -0500, Frank Li wrote:
> > > > > > > > On Thu, Feb 19, 2026 at 04:11:49PM +0100, max.oss.09@gmail.com wrote:
> > > > > > > > > From: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > > > > >
> > > > > > > > > This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
> > > > > > > > >
> > > > > > > > > The change introduced a regression: at least Colibri iMX6ULL and
> > > > > > > > > Colibri iMX7 no longer boot with that commit applied, while they boot
> > > > > > > > > again after reverting it.
> > > > > > > > >
> > > > > > > > > Although this has only been verified on these two modules, the issue
> > > > > > > > > is expected to affect all device trees using the gpmi-nand driver.
> > > > > > > > >
> > > > > > > > > [ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
> > > > > > > > > [ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
> > > > > > > > > [ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
> > > > > > > > > [ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
> > > > > > > > > [ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
> > > > > > > > > [ 0.894686] 0x000000400000-0x000020000000 : "ubi"
> > > > > > > > > [ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
> > > > > > > > > ...
> > > > > > > > > [ 0.960443] ubi0: default fastmap pool size: 200
> > > > > > > > > [ 0.960476] ubi0: default fastmap WL pool size: 100
> > > > > > > > > [ 0.960500] ubi0: attaching mtd4
> > > > > > > > > [ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
> > > > > > > > > ...
> > > > > > > > > [ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
> > > > > > > > > [ 1.650029] UBI error: cannot attach mtd4
> > > > > > > > > ...
> > > > > > > > > [ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
> > > > > > > >
> > > > > > > > Can you help found the real reason why not boot?
> > > > > > > > nand@0 is preferred format for MTD raw nand.
> > > > > > > >
> > > > > > > > Frank
> > > > > > >
> > > > > > > I guess the root cause is that the driver for gpmi-nand predates the
> > > > > > > update of the binding rules which want the nand device described in
> > > > > > > a child node 'nand@0' also for nand controllers which only can
> > > > > > > control one nand chip.
> > > > > > >
> > > > > > > While it is possible to update the driver in the same patch set as
> > > > > > > changing the device tree to understand the new dtb rules, maybe even
> > > > > > > falling back to the old definitions this likely breaks other users,
> > > > > > > most notable U-Boot.
> > > > > >
> > > > > > GPMI is widely used, include i.MX8 still use GPMI. Does below patch fix
> > > > > > boot problem?
> > > > >
> > > > > My concern is that the new device tree (with the nand@0 subnode) is not
> > > > > yet understood by other consumers of the DT sources, e.g. U‑Boot, older
> > > > > Linux kernels (before the driver change), possibly barebox, and any
> > > > > other consumer that relies on the kernel DT files.
> > > >
> > > > I understand, but we need move forward. we can keep both for transition.
> > > >
> > > > >
> > > > > Updating only the Linux driver to support both the new and old bindings
> > > > > therefore solves only part of the problem. As long as these other
> > > > > consumers do not understand both bindings as well, we cannot safely
> > > > > update the shared DT sources. So I think the commit needs to be reverted.
> > > > >
> > > > > In addition, the proposed fix in the driver is likely incomplete:
> > > > > with the old binding there may be child nodes (i.e for partitions).
> > > > > 'np = of_get_next_child(this->pdev->dev.of_node, NULL);' does then find
> > > > > a node whcih is not the node that actually describes the single NAND
> > > > > chip.
> > > >
> > > > I know it is incomplete, just want to check if it is the reason cause
> > > > boot failure.
> > > >
> > > > >
> > > > > An alternative approach could be to update the binding documentation
> > > > > so that, specifically for the GPMI driver, the older binding is also
> > > > > considered valid.
> > > >
> > > > Not easy to do that, I try many method to update yaml file. common nand
> > > > flash detect node node "nand-controller".
> > > >
> > > > > Once the driver supports both the old and the new binding, the old
> > > > > form could be marked as deprecated, but still allowed for compatibility.
> > > > > This would avoid breaking existing consumers while giving us a path
> > > > > to migrate DTs over time.
> > > >
> > > > Needn't revert all, just revert delete part, keep both to help migrate.
> > > >
> > > > anyways, I need know if of_get_next_child(this->pdev->dev.of_node, NULL);
> > > > fix your problem.
> > >
> > > I tested the following on Colibri iMX7.
> > >
> > > kernel 7.0-rc1 and DTB are built from an untouched kernel at commit
> > > 7dff99b35460 ("Remove WARN_ALL_UNSEEDED_RANDOM kernel config option").
> > >
> > > kernel 7.0-rc1 patched has the sources as above plus the changes you
> > > propose to the gpmi-nand driver.
> > >
> > > DTB-reverted has the sources as above plus commit 8124b4a4a96b ("ARM:
> > > dts: imx: move nand related property under nand@0") reverted.
> > >
> > > DTB DTB-reverted
> > >
> > > kernel 7.0-rc1 fail boots
> > >
> > > kernel 7.0-rc1 patched boots boots
> >
> > Thanks you for testing. I will work a formal patch for it. Can you help
> > rework you patch, which keep both properties, just revert deleted part
> > and keep everything nand@0, so it help transistion. you also start work
> > uboot part.
>
> We are happy to test any patch proposals on our hardware for U-Boot
> and Linux, with and without the nand@0 subnode.
>
> Please note that the current state as of Linux v7.0-rc2 is broken
> for our NAND-based modules, and our CI no longer produces any useful
> results as a consequence.
>
> I strongly believe that, as an immediate first step, the commit
> that moved the DT NAND chip configuration into its subnode should
> be reverted.
As my previous said, can do partial revert? Just add back property under
gpmi and keep nand@0 node.
For example
--- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
@@ -260,14 +260,10 @@ fixed-link {
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
Remove "- nand@0" part. You can use "git add -p" to do that.
Frank
>
> Regards
> Max
>
> >
> > I plan give additional 1 year to do transistion. This type layout actually
> > exist for long time.
> >
> > Frank
> >
> > >
> > > Regards
> > > Max
> > >
> > > >
> > > > Frank
> > > > >
> > > > > Regards,
> > > > > Max
> > > > >
> > > > > >
> > > > > > diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > > index 51f595fbc834e..fb126a7c4a61e 100644
> > > > > > --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > > +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > > @@ -2680,6 +2680,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > > > > {
> > > > > > struct nand_chip *chip = &this->nand;
> > > > > > struct mtd_info *mtd = nand_to_mtd(chip);
> > > > > > + struct device_node *np;
> > > > > > int ret;
> > > > > >
> > > > > > /* init the MTD data structures */
> > > > > > @@ -2688,7 +2689,10 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > > > >
> > > > > > /* init the nand_chip{}, we don't support a 16-bit NAND Flash bus. */
> > > > > > nand_set_controller_data(chip, this);
> > > > > > - nand_set_flash_node(chip, this->pdev->dev.of_node);
> > > > > > + np = of_get_next_child(this->pdev->dev.of_node, NULL);
> > > > > > + if (!np)
> > > > > > + np = this->pdev->dev.of_node;
> > > > > > + nand_set_flash_node(chip, np);
> > > > > > chip->legacy.block_markbad = gpmi_block_markbad;
> > > > > > chip->badblock_pattern = &gpmi_bbt_descr;
> > > > > > chip->options |= NAND_NO_SUBPAGE_WRITE;
> > > > > >
> > > > > > Frank
> > > > > > >
> > > > > > >
> > > > > > > So I don't see a quick fix other than reverting and living with the
> > > > > > > dtb_check warning.
> > > > > > >
> > > > > > > Regards,
> > > > > > > Max
> > > > > > >
> > > > > > > > >
> > > > > > > > > Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
> > > > > > > > > Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > > > > >
> > > > > > > > > ---
> > > > > > > > >
> > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
> > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
> > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
> > > > > > > > > .../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
> > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
> > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
> > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
> > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
> > > > > > > > > .../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
> > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
> > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
> > > > > > > > > .../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
> > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
> > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
> > > > > > > > > arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
> > > > > > > > > 15 files changed, 22 insertions(+), 82 deletions(-)
> > > > > > > > >
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > > index f452764fae00..547fb141ec0c 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > > @@ -36,12 +36,8 @@ &clks {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > status = "okay";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &i2c3 {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > > index 58ecdb87c6d4..9975b6ee433d 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > > @@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > status = "okay";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &i2c1 {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > > index 6f3becd33a5b..aa9a442852f4 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > > @@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > status = "okay";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &i2c1 {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > > index f2140dd8525f..85e278eb2016 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > > @@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > status = "disabled";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &i2c3 {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > > index 131a3428ddb8..c93dbc595ef6 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > > @@ -260,14 +260,10 @@ fixed-link {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > #address-cells = <1>;
> > > > > > > > > #size-cells = <0>;
> > > > > > > > > status = "okay";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &i2c3 {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > > index d29adfef5fdb..57297d6521cf 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > > @@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > fsl,no-blockmark-swap;
> > > > > > > > > status = "okay";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &i2c1 {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > > index 40d530c1dc29..2a6bb5ff808a 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > > @@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > status = "okay";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &i2c1 {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > > index 776f6f78ee46..e34c8cbe36ae 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > > @@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > status = "disabled";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &i2c1 {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > > index 27e4d2aec137..a3ea1b208462 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > > @@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > status = "disabled";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &i2c1 {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > > index dc53f9286ffe..1992dfb53b45 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > > @@ -296,13 +296,9 @@ &fec2 {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > fsl,no-blockmark-swap;
> > > > > > > > > status = "okay";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &i2c2 {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > > index eaed2cbf0c82..ec3c1e7301f4 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > > @@ -160,15 +160,11 @@ &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > fsl,use-minimum-ecc;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > > + nand-ecc-strength = <8>;
> > > > > > > > > + nand-ecc-step-size = <512>;
> > > > > > > > > status = "okay";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > > - nand-ecc-strength = <8>;
> > > > > > > > > - nand-ecc-step-size = <512>;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > /* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > > index 3dfd43b32055..43518bf07602 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > > @@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > > + nand-ecc-strength = <0>;
> > > > > > > > > + nand-ecc-step-size = <0>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > status = "okay";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > > - nand-ecc-strength = <0>;
> > > > > > > > > - nand-ecc-step-size = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &iomuxc {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > > index fc298f57bfff..83b9de17cee2 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > > @@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > status = "disabled";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &uart1 {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > > index 8ec18eae98a4..2d9f495660c9 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > > @@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
> > > > > > > > > &gpmi {
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > status = "okay";
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > &snvs_poweroff {
> > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > > index a41dc4edfc0d..8666dcd7fe97 100644
> > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > > @@ -375,14 +375,10 @@ &gpio7 {
> > > > > > > > > /* NAND on such SKUs */
> > > > > > > > > &gpmi {
> > > > > > > > > fsl,use-minimum-ecc;
> > > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > pinctrl-names = "default";
> > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > -
> > > > > > > > > - nand@0 {
> > > > > > > > > - reg = <0>;
> > > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > - };
> > > > > > > > > };
> > > > > > > > >
> > > > > > > > > /* On-module Power I2C */
> > > > > > > > > --
> > > > > > > > > 2.42.0
> > > > > > > > >
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-03-02 15:49 ` Frank Li
@ 2026-03-05 20:05 ` Frank Li
2026-03-05 20:37 ` Krzysztof Kozlowski
2026-03-09 10:41 ` Max Krummenacher
1 sibling, 1 reply; 18+ messages in thread
From: Frank Li @ 2026-03-05 20:05 UTC (permalink / raw)
To: max.krummenacher
Cc: Francesco Dolcini, Max Krummenacher, Conor Dooley, Fabio Estevam,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel
On Mon, Mar 02, 2026 at 10:49:28AM -0500, Frank Li wrote:
> On Mon, Mar 02, 2026 at 11:53:00AM +0100, Max Krummenacher wrote:
> > for our NAND-based modules, and our CI no longer produces any useful
> > results as a consequence.
> >
> > I strongly believe that, as an immediate first step, the commit
> > that moved the DT NAND chip configuration into its subnode should
> > be reverted.
>
> As my previous said, can do partial revert? Just add back property under
> gpmi and keep nand@0 node.
>
> For example
>
> --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> @@ -260,14 +260,10 @@ fixed-link {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> #address-cells = <1>;
> #size-cells = <0>;
> status = "okay";
>
> Remove "- nand@0" part. You can use "git add -p" to do that.
Do you plan rework this patch as what I said?
Frank
>
> Frank
>
>
> >
> > Regards
> > Max
> >
> > >
> > > I plan give additional 1 year to do transistion. This type layout actually
> > > exist for long time.
> > >
> > > Frank
> > >
> > > >
> > > > Regards
> > > > Max
> > > >
> > > > >
> > > > > Frank
> > > > > >
> > > > > > Regards,
> > > > > > Max
> > > > > >
> > > > > > >
> > > > > > > diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > > > index 51f595fbc834e..fb126a7c4a61e 100644
> > > > > > > --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > > > +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > > > @@ -2680,6 +2680,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > > > > > {
> > > > > > > struct nand_chip *chip = &this->nand;
> > > > > > > struct mtd_info *mtd = nand_to_mtd(chip);
> > > > > > > + struct device_node *np;
> > > > > > > int ret;
> > > > > > >
> > > > > > > /* init the MTD data structures */
> > > > > > > @@ -2688,7 +2689,10 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > > > > >
> > > > > > > /* init the nand_chip{}, we don't support a 16-bit NAND Flash bus. */
> > > > > > > nand_set_controller_data(chip, this);
> > > > > > > - nand_set_flash_node(chip, this->pdev->dev.of_node);
> > > > > > > + np = of_get_next_child(this->pdev->dev.of_node, NULL);
> > > > > > > + if (!np)
> > > > > > > + np = this->pdev->dev.of_node;
> > > > > > > + nand_set_flash_node(chip, np);
> > > > > > > chip->legacy.block_markbad = gpmi_block_markbad;
> > > > > > > chip->badblock_pattern = &gpmi_bbt_descr;
> > > > > > > chip->options |= NAND_NO_SUBPAGE_WRITE;
> > > > > > >
> > > > > > > Frank
> > > > > > > >
> > > > > > > >
> > > > > > > > So I don't see a quick fix other than reverting and living with the
> > > > > > > > dtb_check warning.
> > > > > > > >
> > > > > > > > Regards,
> > > > > > > > Max
> > > > > > > >
> > > > > > > > > >
> > > > > > > > > > Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
> > > > > > > > > > Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > > > > > >
> > > > > > > > > > ---
> > > > > > > > > >
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
> > > > > > > > > > .../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
> > > > > > > > > > .../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
> > > > > > > > > > .../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
> > > > > > > > > > 15 files changed, 22 insertions(+), 82 deletions(-)
> > > > > > > > > >
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > > > index f452764fae00..547fb141ec0c 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > > > @@ -36,12 +36,8 @@ &clks {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c3 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > > > index 58ecdb87c6d4..9975b6ee433d 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > > > @@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > > > index 6f3becd33a5b..aa9a442852f4 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > > > @@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > > > index f2140dd8525f..85e278eb2016 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > > > @@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "disabled";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c3 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > > > index 131a3428ddb8..c93dbc595ef6 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > > > @@ -260,14 +260,10 @@ fixed-link {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > #address-cells = <1>;
> > > > > > > > > > #size-cells = <0>;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c3 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > > > index d29adfef5fdb..57297d6521cf 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > > > @@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > fsl,no-blockmark-swap;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > > > index 40d530c1dc29..2a6bb5ff808a 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > > > @@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > > > index 776f6f78ee46..e34c8cbe36ae 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > > > @@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "disabled";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > > > index 27e4d2aec137..a3ea1b208462 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > > > @@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "disabled";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > > > index dc53f9286ffe..1992dfb53b45 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > > > @@ -296,13 +296,9 @@ &fec2 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > fsl,no-blockmark-swap;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c2 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > > > index eaed2cbf0c82..ec3c1e7301f4 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > > > @@ -160,15 +160,11 @@ &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > fsl,use-minimum-ecc;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > > > + nand-ecc-strength = <8>;
> > > > > > > > > > + nand-ecc-step-size = <512>;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > > > - nand-ecc-strength = <8>;
> > > > > > > > > > - nand-ecc-step-size = <512>;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > /* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > > > index 3dfd43b32055..43518bf07602 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > > > @@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > > > + nand-ecc-strength = <0>;
> > > > > > > > > > + nand-ecc-step-size = <0>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > > > - nand-ecc-strength = <0>;
> > > > > > > > > > - nand-ecc-step-size = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &iomuxc {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > > > index fc298f57bfff..83b9de17cee2 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > > > @@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "disabled";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &uart1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > > > index 8ec18eae98a4..2d9f495660c9 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > > > @@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &snvs_poweroff {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > > > index a41dc4edfc0d..8666dcd7fe97 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > > > @@ -375,14 +375,10 @@ &gpio7 {
> > > > > > > > > > /* NAND on such SKUs */
> > > > > > > > > > &gpmi {
> > > > > > > > > > fsl,use-minimum-ecc;
> > > > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > /* On-module Power I2C */
> > > > > > > > > > --
> > > > > > > > > > 2.42.0
> > > > > > > > > >
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-03-05 20:05 ` Frank Li
@ 2026-03-05 20:37 ` Krzysztof Kozlowski
2026-03-05 22:51 ` Frank Li
0 siblings, 1 reply; 18+ messages in thread
From: Krzysztof Kozlowski @ 2026-03-05 20:37 UTC (permalink / raw)
To: Frank Li, max.krummenacher
Cc: Francesco Dolcini, Max Krummenacher, Conor Dooley, Fabio Estevam,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel, regressions@lists.linux.dev
On 05/03/2026 21:05, Frank Li wrote:
> On Mon, Mar 02, 2026 at 10:49:28AM -0500, Frank Li wrote:
>> On Mon, Mar 02, 2026 at 11:53:00AM +0100, Max Krummenacher wrote:
>>> for our NAND-based modules, and our CI no longer produces any useful
>>> results as a consequence.
>>>
>>> I strongly believe that, as an immediate first step, the commit
>>> that moved the DT NAND chip configuration into its subnode should
>>> be reverted.
>>
>> As my previous said, can do partial revert? Just add back property under
>> gpmi and keep nand@0 node.
>>
>> For example
>>
>> --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
>> +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
>> @@ -260,14 +260,10 @@ fixed-link {
>> &gpmi {
>> pinctrl-names = "default";
>> pinctrl-0 = <&pinctrl_gpmi_nand>;
>> + nand-on-flash-bbt;
>> #address-cells = <1>;
>> #size-cells = <0>;
>> status = "okay";
>>
>> Remove "- nand@0" part. You can use "git add -p" to do that.
>
> Do you plan rework this patch as what I said?
Issue and revert were posted two weeks ago. That's maximum time to
handle regression.
Please apply the patch to fix the regression.
#regzbot introduced: 8124b4a4a96b
>
> Frank
>
>>
>> Frank
>>
>>
Please kindly trim the replies from unnecessary context. It makes it
much easier to find new content.
There is huge chunk of quotes below which no one should scroll through
to look for your replies.
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-03-05 20:37 ` Krzysztof Kozlowski
@ 2026-03-05 22:51 ` Frank Li
2026-03-06 7:12 ` Krzysztof Kozlowski
0 siblings, 1 reply; 18+ messages in thread
From: Frank Li @ 2026-03-05 22:51 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: max.krummenacher, Francesco Dolcini, Max Krummenacher,
Conor Dooley, Fabio Estevam, Krzysztof Kozlowski, Peng Fan,
Pengutronix Kernel Team, Rob Herring, Sascha Hauer, Shawn Guo,
devicetree, imx, linux-arm-kernel, linux-kernel,
regressions@lists.linux.dev
On Thu, Mar 05, 2026 at 09:37:26PM +0100, Krzysztof Kozlowski wrote:
> On 05/03/2026 21:05, Frank Li wrote:
> > On Mon, Mar 02, 2026 at 10:49:28AM -0500, Frank Li wrote:
> >> On Mon, Mar 02, 2026 at 11:53:00AM +0100, Max Krummenacher wrote:
> >>> for our NAND-based modules, and our CI no longer produces any useful
> >>> results as a consequence.
> >>>
> >>> I strongly believe that, as an immediate first step, the commit
> >>> that moved the DT NAND chip configuration into its subnode should
> >>> be reverted.
> >>
> >> As my previous said, can do partial revert? Just add back property under
> >> gpmi and keep nand@0 node.
> >>
> >> For example
> >>
> >> --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> >> +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> >> @@ -260,14 +260,10 @@ fixed-link {
> >> &gpmi {
> >> pinctrl-names = "default";
> >> pinctrl-0 = <&pinctrl_gpmi_nand>;
> >> + nand-on-flash-bbt;
> >> #address-cells = <1>;
> >> #size-cells = <0>;
> >> status = "okay";
> >>
> >> Remove "- nand@0" part. You can use "git add -p" to do that.
> >
> > Do you plan rework this patch as what I said?
>
> Issue and revert were posted two weeks ago. That's maximum time to
> handle regression.
Any docuement said these maxium times, I also want to know other maximum
time, such as
what's max time maintainer need reply? Many patch is not any
reponse for long time.
Frank
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-03-05 22:51 ` Frank Li
@ 2026-03-06 7:12 ` Krzysztof Kozlowski
0 siblings, 0 replies; 18+ messages in thread
From: Krzysztof Kozlowski @ 2026-03-06 7:12 UTC (permalink / raw)
To: Frank Li
Cc: max.krummenacher, Francesco Dolcini, Max Krummenacher,
Conor Dooley, Fabio Estevam, Krzysztof Kozlowski, Peng Fan,
Pengutronix Kernel Team, Rob Herring, Sascha Hauer, Shawn Guo,
devicetree, imx, linux-arm-kernel, linux-kernel,
regressions@lists.linux.dev
On 05/03/2026 23:51, Frank Li wrote:
> On Thu, Mar 05, 2026 at 09:37:26PM +0100, Krzysztof Kozlowski wrote:
>> On 05/03/2026 21:05, Frank Li wrote:
>>> On Mon, Mar 02, 2026 at 10:49:28AM -0500, Frank Li wrote:
>>>> On Mon, Mar 02, 2026 at 11:53:00AM +0100, Max Krummenacher wrote:
>>>>> for our NAND-based modules, and our CI no longer produces any useful
>>>>> results as a consequence.
>>>>>
>>>>> I strongly believe that, as an immediate first step, the commit
>>>>> that moved the DT NAND chip configuration into its subnode should
>>>>> be reverted.
>>>>
>>>> As my previous said, can do partial revert? Just add back property under
>>>> gpmi and keep nand@0 node.
>>>>
>>>> For example
>>>>
>>>> --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
>>>> +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
>>>> @@ -260,14 +260,10 @@ fixed-link {
>>>> &gpmi {
>>>> pinctrl-names = "default";
>>>> pinctrl-0 = <&pinctrl_gpmi_nand>;
>>>> + nand-on-flash-bbt;
>>>> #address-cells = <1>;
>>>> #size-cells = <0>;
>>>> status = "okay";
>>>>
>>>> Remove "- nand@0" part. You can use "git add -p" to do that.
>>>
>>> Do you plan rework this patch as what I said?
>>
>> Issue and revert were posted two weeks ago. That's maximum time to
>> handle regression.
>
> Any docuement said these maxium times, I also want to know other maximum
Just read the regression and bug handling docs in the kernel.
> time, such as
> what's max time maintainer need reply? Many patch is not any
> reponse for long time.
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-02-19 15:11 [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0" max.oss.09
2026-02-19 16:01 ` Frank Li
@ 2026-03-06 15:24 ` Frank Li
1 sibling, 0 replies; 18+ messages in thread
From: Frank Li @ 2026-03-06 15:24 UTC (permalink / raw)
To: Francesco Dolcini, max.oss.09
Cc: Frank Li, Max Krummenacher, Conor Dooley, Fabio Estevam,
Krzysztof Kozlowski, Peng Fan, Pengutronix Kernel Team,
Rob Herring, Sascha Hauer, Shawn Guo, devicetree, imx,
linux-arm-kernel, linux-kernel
On Thu, 19 Feb 2026 16:11:49 +0100, max.oss.09@gmail.com wrote:
> This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
>
> The change introduced a regression: at least Colibri iMX6ULL and
> Colibri iMX7 no longer boot with that commit applied, while they boot
> again after reverting it.
>
> Although this has only been verified on these two modules, the issue
> is expected to affect all device trees using the gpmi-nand driver.
>
> [...]
Applied, thanks!
[1/1] Revert "ARM: dts: imx: move nand related property under nand@0"
commit: 33f0dbd4b895e49add0c2543e5dd2ff5b872121c
Best regards,
--
Frank Li <Frank.Li@nxp.com>
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-03-02 15:49 ` Frank Li
2026-03-05 20:05 ` Frank Li
@ 2026-03-09 10:41 ` Max Krummenacher
2026-03-09 14:49 ` Frank Li
1 sibling, 1 reply; 18+ messages in thread
From: Max Krummenacher @ 2026-03-09 10:41 UTC (permalink / raw)
To: Frank Li
Cc: max.krummenacher, Francesco Dolcini, Max Krummenacher,
Conor Dooley, Fabio Estevam, Krzysztof Kozlowski, Peng Fan,
Pengutronix Kernel Team, Rob Herring, Sascha Hauer, Shawn Guo,
devicetree, imx, linux-arm-kernel, linux-kernel
On Mon, Mar 02, 2026 at 10:49:28AM -0500, Frank Li wrote:
> On Mon, Mar 02, 2026 at 11:53:00AM +0100, Max Krummenacher wrote:
> > Am Donnerstag, dem 26.02.2026 um 10:12 -0500 schrieb Frank Li:
> > > On Thu, Feb 26, 2026 at 01:47:39PM +0100, Max Krummenacher wrote:
> > > > On Wed, Feb 25, 2026 at 12:51:32PM -0500, Frank Li wrote:
> > > > > On Wed, Feb 25, 2026 at 06:40:21PM +0100, Max Krummenacher wrote:
> > > > > > On Thu, Feb 19, 2026 at 02:41:58PM -0500, Frank Li wrote:
> > > > > > > On Thu, Feb 19, 2026 at 06:06:31PM +0100, Max Krummenacher wrote:
> > > > > > > > Hi Frank
> > > > > > > >
> > > > > > > > On Thu, Feb 19, 2026 at 11:01:26AM -0500, Frank Li wrote:
> > > > > > > > > On Thu, Feb 19, 2026 at 04:11:49PM +0100, max.oss.09@gmail.com wrote:
> > > > > > > > > > From: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > > > > > >
> > > > > > > > > > This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
> > > > > > > > > >
> > > > > > > > > > The change introduced a regression: at least Colibri iMX6ULL and
> > > > > > > > > > Colibri iMX7 no longer boot with that commit applied, while they boot
> > > > > > > > > > again after reverting it.
> > > > > > > > > >
> > > > > > > > > > Although this has only been verified on these two modules, the issue
> > > > > > > > > > is expected to affect all device trees using the gpmi-nand driver.
> > > > > > > > > >
> > > > > > > > > > [ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
> > > > > > > > > > [ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
> > > > > > > > > > [ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
> > > > > > > > > > [ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
> > > > > > > > > > [ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
> > > > > > > > > > [ 0.894686] 0x000000400000-0x000020000000 : "ubi"
> > > > > > > > > > [ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
> > > > > > > > > > ...
> > > > > > > > > > [ 0.960443] ubi0: default fastmap pool size: 200
> > > > > > > > > > [ 0.960476] ubi0: default fastmap WL pool size: 100
> > > > > > > > > > [ 0.960500] ubi0: attaching mtd4
> > > > > > > > > > [ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
> > > > > > > > > > ...
> > > > > > > > > > [ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
> > > > > > > > > > [ 1.650029] UBI error: cannot attach mtd4
> > > > > > > > > > ...
> > > > > > > > > > [ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
> > > > > > > > >
> > > > > > > > > Can you help found the real reason why not boot?
> > > > > > > > > nand@0 is preferred format for MTD raw nand.
> > > > > > > > >
> > > > > > > > > Frank
> > > > > > > >
> > > > > > > > I guess the root cause is that the driver for gpmi-nand predates the
> > > > > > > > update of the binding rules which want the nand device described in
> > > > > > > > a child node 'nand@0' also for nand controllers which only can
> > > > > > > > control one nand chip.
> > > > > > > >
> > > > > > > > While it is possible to update the driver in the same patch set as
> > > > > > > > changing the device tree to understand the new dtb rules, maybe even
> > > > > > > > falling back to the old definitions this likely breaks other users,
> > > > > > > > most notable U-Boot.
> > > > > > >
> > > > > > > GPMI is widely used, include i.MX8 still use GPMI. Does below patch fix
> > > > > > > boot problem?
> > > > > >
> > > > > > My concern is that the new device tree (with the nand@0 subnode) is not
> > > > > > yet understood by other consumers of the DT sources, e.g. U‑Boot, older
> > > > > > Linux kernels (before the driver change), possibly barebox, and any
> > > > > > other consumer that relies on the kernel DT files.
> > > > >
> > > > > I understand, but we need move forward. we can keep both for transition.
> > > > >
> > > > > >
> > > > > > Updating only the Linux driver to support both the new and old bindings
> > > > > > therefore solves only part of the problem. As long as these other
> > > > > > consumers do not understand both bindings as well, we cannot safely
> > > > > > update the shared DT sources. So I think the commit needs to be reverted.
> > > > > >
> > > > > > In addition, the proposed fix in the driver is likely incomplete:
> > > > > > with the old binding there may be child nodes (i.e for partitions).
> > > > > > 'np = of_get_next_child(this->pdev->dev.of_node, NULL);' does then find
> > > > > > a node whcih is not the node that actually describes the single NAND
> > > > > > chip.
> > > > >
> > > > > I know it is incomplete, just want to check if it is the reason cause
> > > > > boot failure.
> > > > >
> > > > > >
> > > > > > An alternative approach could be to update the binding documentation
> > > > > > so that, specifically for the GPMI driver, the older binding is also
> > > > > > considered valid.
> > > > >
> > > > > Not easy to do that, I try many method to update yaml file. common nand
> > > > > flash detect node node "nand-controller".
> > > > >
> > > > > > Once the driver supports both the old and the new binding, the old
> > > > > > form could be marked as deprecated, but still allowed for compatibility.
> > > > > > This would avoid breaking existing consumers while giving us a path
> > > > > > to migrate DTs over time.
> > > > >
> > > > > Needn't revert all, just revert delete part, keep both to help migrate.
> > > > >
> > > > > anyways, I need know if of_get_next_child(this->pdev->dev.of_node, NULL);
> > > > > fix your problem.
> > > >
> > > > I tested the following on Colibri iMX7.
> > > >
> > > > kernel 7.0-rc1 and DTB are built from an untouched kernel at commit
> > > > 7dff99b35460 ("Remove WARN_ALL_UNSEEDED_RANDOM kernel config option").
> > > >
> > > > kernel 7.0-rc1 patched has the sources as above plus the changes you
> > > > propose to the gpmi-nand driver.
> > > >
> > > > DTB-reverted has the sources as above plus commit 8124b4a4a96b ("ARM:
> > > > dts: imx: move nand related property under nand@0") reverted.
> > > >
> > > > DTB DTB-reverted
> > > >
> > > > kernel 7.0-rc1 fail boots
> > > >
> > > > kernel 7.0-rc1 patched boots boots
> > >
> > > Thanks you for testing. I will work a formal patch for it. Can you help
> > > rework you patch, which keep both properties, just revert deleted part
> > > and keep everything nand@0, so it help transistion. you also start work
> > > uboot part.
> >
> > We are happy to test any patch proposals on our hardware for U-Boot
> > and Linux, with and without the nand@0 subnode.
> >
> > Please note that the current state as of Linux v7.0-rc2 is broken
> > for our NAND-based modules, and our CI no longer produces any useful
> > results as a consequence.
> >
> > I strongly believe that, as an immediate first step, the commit
> > that moved the DT NAND chip configuration into its subnode should
> > be reverted.
>
> As my previous said, can do partial revert? Just add back property under
> gpmi and keep nand@0 node.
>
> For example
>
> --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> @@ -260,14 +260,10 @@ fixed-link {
> &gpmi {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_gpmi_nand>;
> + nand-on-flash-bbt;
> #address-cells = <1>;
> #size-cells = <0>;
> status = "okay";
>
> Remove "- nand@0" part. You can use "git add -p" to do that.
>
> Frank
Sorry for the delay, was AFK last week.
I tried the partial revert of having the properties configuring the
nand chip both at the nand controller node level directly and
additionally in the subnode nand@0.
I.e. revert what your patch removes but keep what it adds.
This works with the existing gpmi driver and the patched gpmi driver:
DTB DTB-reverted DTB-partially-reverted
kernel 7.0-rc1 fail boots boots
kernel 7.0-rc1 patched boots boots boots
Regards
Max[A
>
>
> >
> > Regards
> > Max
> >
> > >
> > > I plan give additional 1 year to do transistion. This type layout actually
> > > exist for long time.
> > >
> > > Frank
> > >
> > > >
> > > > Regards
> > > > Max
> > > >
> > > > >
> > > > > Frank
> > > > > >
> > > > > > Regards,
> > > > > > Max
> > > > > >
> > > > > > >
> > > > > > > diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > > > index 51f595fbc834e..fb126a7c4a61e 100644
> > > > > > > --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > > > +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > > > @@ -2680,6 +2680,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > > > > > {
> > > > > > > struct nand_chip *chip = &this->nand;
> > > > > > > struct mtd_info *mtd = nand_to_mtd(chip);
> > > > > > > + struct device_node *np;
> > > > > > > int ret;
> > > > > > >
> > > > > > > /* init the MTD data structures */
> > > > > > > @@ -2688,7 +2689,10 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > > > > >
> > > > > > > /* init the nand_chip{}, we don't support a 16-bit NAND Flash bus. */
> > > > > > > nand_set_controller_data(chip, this);
> > > > > > > - nand_set_flash_node(chip, this->pdev->dev.of_node);
> > > > > > > + np = of_get_next_child(this->pdev->dev.of_node, NULL);
> > > > > > > + if (!np)
> > > > > > > + np = this->pdev->dev.of_node;
> > > > > > > + nand_set_flash_node(chip, np);
> > > > > > > chip->legacy.block_markbad = gpmi_block_markbad;
> > > > > > > chip->badblock_pattern = &gpmi_bbt_descr;
> > > > > > > chip->options |= NAND_NO_SUBPAGE_WRITE;
> > > > > > >
> > > > > > > Frank
> > > > > > > >
> > > > > > > >
> > > > > > > > So I don't see a quick fix other than reverting and living with the
> > > > > > > > dtb_check warning.
> > > > > > > >
> > > > > > > > Regards,
> > > > > > > > Max
> > > > > > > >
> > > > > > > > > >
> > > > > > > > > > Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
> > > > > > > > > > Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > > > > > >
> > > > > > > > > > ---
> > > > > > > > > >
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
> > > > > > > > > > .../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
> > > > > > > > > > .../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
> > > > > > > > > > .../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
> > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
> > > > > > > > > > 15 files changed, 22 insertions(+), 82 deletions(-)
> > > > > > > > > >
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > > > index f452764fae00..547fb141ec0c 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > > > @@ -36,12 +36,8 @@ &clks {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c3 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > > > index 58ecdb87c6d4..9975b6ee433d 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > > > @@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > > > index 6f3becd33a5b..aa9a442852f4 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > > > @@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > > > index f2140dd8525f..85e278eb2016 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > > > @@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "disabled";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c3 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > > > index 131a3428ddb8..c93dbc595ef6 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > > > @@ -260,14 +260,10 @@ fixed-link {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > #address-cells = <1>;
> > > > > > > > > > #size-cells = <0>;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c3 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > > > index d29adfef5fdb..57297d6521cf 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > > > @@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > fsl,no-blockmark-swap;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > > > index 40d530c1dc29..2a6bb5ff808a 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > > > @@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > > > index 776f6f78ee46..e34c8cbe36ae 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > > > @@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "disabled";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > > > index 27e4d2aec137..a3ea1b208462 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > > > @@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "disabled";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > > > index dc53f9286ffe..1992dfb53b45 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > > > @@ -296,13 +296,9 @@ &fec2 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > fsl,no-blockmark-swap;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &i2c2 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > > > index eaed2cbf0c82..ec3c1e7301f4 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > > > @@ -160,15 +160,11 @@ &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > fsl,use-minimum-ecc;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > > > + nand-ecc-strength = <8>;
> > > > > > > > > > + nand-ecc-step-size = <512>;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > > > - nand-ecc-strength = <8>;
> > > > > > > > > > - nand-ecc-step-size = <512>;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > /* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > > > index 3dfd43b32055..43518bf07602 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > > > @@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > > > + nand-ecc-strength = <0>;
> > > > > > > > > > + nand-ecc-step-size = <0>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > > > - nand-ecc-strength = <0>;
> > > > > > > > > > - nand-ecc-step-size = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &iomuxc {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > > > index fc298f57bfff..83b9de17cee2 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > > > @@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "disabled";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &uart1 {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > > > index 8ec18eae98a4..2d9f495660c9 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > > > @@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
> > > > > > > > > > &gpmi {
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > status = "okay";
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > &snvs_poweroff {
> > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > > > index a41dc4edfc0d..8666dcd7fe97 100644
> > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > > > @@ -375,14 +375,10 @@ &gpio7 {
> > > > > > > > > > /* NAND on such SKUs */
> > > > > > > > > > &gpmi {
> > > > > > > > > > fsl,use-minimum-ecc;
> > > > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > -
> > > > > > > > > > - nand@0 {
> > > > > > > > > > - reg = <0>;
> > > > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > - };
> > > > > > > > > > };
> > > > > > > > > >
> > > > > > > > > > /* On-module Power I2C */
> > > > > > > > > > --
> > > > > > > > > > 2.42.0
> > > > > > > > > >
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0"
2026-03-09 10:41 ` Max Krummenacher
@ 2026-03-09 14:49 ` Frank Li
0 siblings, 0 replies; 18+ messages in thread
From: Frank Li @ 2026-03-09 14:49 UTC (permalink / raw)
To: Max Krummenacher
Cc: max.krummenacher, Francesco Dolcini, Max Krummenacher,
Conor Dooley, Fabio Estevam, Krzysztof Kozlowski, Peng Fan,
Pengutronix Kernel Team, Rob Herring, Sascha Hauer, Shawn Guo,
devicetree, imx, linux-arm-kernel, linux-kernel
On Mon, Mar 09, 2026 at 11:41:43AM +0100, Max Krummenacher wrote:
> On Mon, Mar 02, 2026 at 10:49:28AM -0500, Frank Li wrote:
> > On Mon, Mar 02, 2026 at 11:53:00AM +0100, Max Krummenacher wrote:
> > > Am Donnerstag, dem 26.02.2026 um 10:12 -0500 schrieb Frank Li:
> > > > On Thu, Feb 26, 2026 at 01:47:39PM +0100, Max Krummenacher wrote:
> > > > > On Wed, Feb 25, 2026 at 12:51:32PM -0500, Frank Li wrote:
> > > > > > On Wed, Feb 25, 2026 at 06:40:21PM +0100, Max Krummenacher wrote:
> > > > > > > On Thu, Feb 19, 2026 at 02:41:58PM -0500, Frank Li wrote:
> > > > > > > > On Thu, Feb 19, 2026 at 06:06:31PM +0100, Max Krummenacher wrote:
> > > > > > > > > Hi Frank
> > > > > > > > >
> > > > > > > > > On Thu, Feb 19, 2026 at 11:01:26AM -0500, Frank Li wrote:
> > > > > > > > > > On Thu, Feb 19, 2026 at 04:11:49PM +0100, max.oss.09@gmail.com wrote:
> > > > > > > > > > > From: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > > > > > > >
> > > > > > > > > > > This reverts commit 8124b4a4a96b57d6cc3705a9df9623c52baa047b.
> > > > > > > > > > >
> > > > > > > > > > > The change introduced a regression: at least Colibri iMX6ULL and
> > > > > > > > > > > Colibri iMX7 no longer boot with that commit applied, while they boot
> > > > > > > > > > > again after reverting it.
> > > > > > > > > > >
> > > > > > > > > > > Although this has only been verified on these two modules, the issue
> > > > > > > > > > > is expected to affect all device trees using the gpmi-nand driver.
> > > > > > > > > > >
> > > > > > > > > > > [ 0.876938] Creating 5 MTD partitions on "gpmi-nand":
> > > > > > > > > > > [ 0.876974] 0x000000000000-0x000000080000 : "mx7-bcb"
> > > > > > > > > > > [ 0.879860] 0x000000080000-0x000000200000 : "u-boot1"
> > > > > > > > > > > [ 0.884761] 0x000000200000-0x000000380000 : "u-boot2"
> > > > > > > > > > > [ 0.886993] 0x000000380000-0x000000400000 : "u-boot-env"
> > > > > > > > > > > [ 0.894686] 0x000000400000-0x000020000000 : "ubi"
> > > > > > > > > > > [ 0.899054] gpmi-nand 33002000.nand-controller: driver registered.
> > > > > > > > > > > ...
> > > > > > > > > > > [ 0.960443] ubi0: default fastmap pool size: 200
> > > > > > > > > > > [ 0.960476] ubi0: default fastmap WL pool size: 100
> > > > > > > > > > > [ 0.960500] ubi0: attaching mtd4
> > > > > > > > > > > [ 1.636355] ubi0 error: scan_peb: bad image sequence number 1588722158 in PEB 4060, expected 1574791632
> > > > > > > > > > > ...
> > > > > > > > > > > [ 1.649889] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
> > > > > > > > > > > [ 1.650029] UBI error: cannot attach mtd4
> > > > > > > > > > > ...
> > > > > > > > > > > [ 1.670262] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,253)
> > > > > > > > > >
> > > > > > > > > > Can you help found the real reason why not boot?
> > > > > > > > > > nand@0 is preferred format for MTD raw nand.
> > > > > > > > > >
> > > > > > > > > > Frank
> > > > > > > > >
> > > > > > > > > I guess the root cause is that the driver for gpmi-nand predates the
> > > > > > > > > update of the binding rules which want the nand device described in
> > > > > > > > > a child node 'nand@0' also for nand controllers which only can
> > > > > > > > > control one nand chip.
> > > > > > > > >
> > > > > > > > > While it is possible to update the driver in the same patch set as
> > > > > > > > > changing the device tree to understand the new dtb rules, maybe even
> > > > > > > > > falling back to the old definitions this likely breaks other users,
> > > > > > > > > most notable U-Boot.
> > > > > > > >
> > > > > > > > GPMI is widely used, include i.MX8 still use GPMI. Does below patch fix
> > > > > > > > boot problem?
> > > > > > >
> > > > > > > My concern is that the new device tree (with the nand@0 subnode) is not
> > > > > > > yet understood by other consumers of the DT sources, e.g. U‑Boot, older
> > > > > > > Linux kernels (before the driver change), possibly barebox, and any
> > > > > > > other consumer that relies on the kernel DT files.
> > > > > >
> > > > > > I understand, but we need move forward. we can keep both for transition.
> > > > > >
> > > > > > >
> > > > > > > Updating only the Linux driver to support both the new and old bindings
> > > > > > > therefore solves only part of the problem. As long as these other
> > > > > > > consumers do not understand both bindings as well, we cannot safely
> > > > > > > update the shared DT sources. So I think the commit needs to be reverted.
> > > > > > >
> > > > > > > In addition, the proposed fix in the driver is likely incomplete:
> > > > > > > with the old binding there may be child nodes (i.e for partitions).
> > > > > > > 'np = of_get_next_child(this->pdev->dev.of_node, NULL);' does then find
> > > > > > > a node whcih is not the node that actually describes the single NAND
> > > > > > > chip.
> > > > > >
> > > > > > I know it is incomplete, just want to check if it is the reason cause
> > > > > > boot failure.
> > > > > >
> > > > > > >
> > > > > > > An alternative approach could be to update the binding documentation
> > > > > > > so that, specifically for the GPMI driver, the older binding is also
> > > > > > > considered valid.
> > > > > >
> > > > > > Not easy to do that, I try many method to update yaml file. common nand
> > > > > > flash detect node node "nand-controller".
> > > > > >
> > > > > > > Once the driver supports both the old and the new binding, the old
> > > > > > > form could be marked as deprecated, but still allowed for compatibility.
> > > > > > > This would avoid breaking existing consumers while giving us a path
> > > > > > > to migrate DTs over time.
> > > > > >
> > > > > > Needn't revert all, just revert delete part, keep both to help migrate.
> > > > > >
> > > > > > anyways, I need know if of_get_next_child(this->pdev->dev.of_node, NULL);
> > > > > > fix your problem.
> > > > >
> > > > > I tested the following on Colibri iMX7.
> > > > >
> > > > > kernel 7.0-rc1 and DTB are built from an untouched kernel at commit
> > > > > 7dff99b35460 ("Remove WARN_ALL_UNSEEDED_RANDOM kernel config option").
> > > > >
> > > > > kernel 7.0-rc1 patched has the sources as above plus the changes you
> > > > > propose to the gpmi-nand driver.
> > > > >
> > > > > DTB-reverted has the sources as above plus commit 8124b4a4a96b ("ARM:
> > > > > dts: imx: move nand related property under nand@0") reverted.
> > > > >
> > > > > DTB DTB-reverted
> > > > >
> > > > > kernel 7.0-rc1 fail boots
> > > > >
> > > > > kernel 7.0-rc1 patched boots boots
> > > >
> > > > Thanks you for testing. I will work a formal patch for it. Can you help
> > > > rework you patch, which keep both properties, just revert deleted part
> > > > and keep everything nand@0, so it help transistion. you also start work
> > > > uboot part.
> > >
> > > We are happy to test any patch proposals on our hardware for U-Boot
> > > and Linux, with and without the nand@0 subnode.
> > >
> > > Please note that the current state as of Linux v7.0-rc2 is broken
> > > for our NAND-based modules, and our CI no longer produces any useful
> > > results as a consequence.
> > >
> > > I strongly believe that, as an immediate first step, the commit
> > > that moved the DT NAND chip configuration into its subnode should
> > > be reverted.
> >
> > As my previous said, can do partial revert? Just add back property under
> > gpmi and keep nand@0 node.
> >
> > For example
> >
> > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > @@ -260,14 +260,10 @@ fixed-link {
> > &gpmi {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > + nand-on-flash-bbt;
> > #address-cells = <1>;
> > #size-cells = <0>;
> > status = "okay";
> >
> > Remove "- nand@0" part. You can use "git add -p" to do that.
> >
> > Frank
>
> Sorry for the delay, was AFK last week.
>
> I tried the partial revert of having the properties configuring the
> nand chip both at the nand controller node level directly and
> additionally in the subnode nand@0.
> I.e. revert what your patch removes but keep what it adds.
>
> This works with the existing gpmi driver and the patched gpmi driver:
>
> DTB DTB-reverted DTB-partially-reverted
> kernel 7.0-rc1 fail boots boots
> kernel 7.0-rc1 patched boots boots boots
Thanks! I already appled revert patch. If you sent out partially revert
patch, I can replace my fixes branch before I send out pull-reqeust
(plan in this Friday)
Frank
>
> Regards
> Max[A
>
> >
> >
> > >
> > > Regards
> > > Max
> > >
> > > >
> > > > I plan give additional 1 year to do transistion. This type layout actually
> > > > exist for long time.
> > > >
> > > > Frank
> > > >
> > > > >
> > > > > Regards
> > > > > Max
> > > > >
> > > > > >
> > > > > > Frank
> > > > > > >
> > > > > > > Regards,
> > > > > > > Max
> > > > > > >
> > > > > > > >
> > > > > > > > diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > > > > index 51f595fbc834e..fb126a7c4a61e 100644
> > > > > > > > --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > > > > +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
> > > > > > > > @@ -2680,6 +2680,7 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > > > > > > {
> > > > > > > > struct nand_chip *chip = &this->nand;
> > > > > > > > struct mtd_info *mtd = nand_to_mtd(chip);
> > > > > > > > + struct device_node *np;
> > > > > > > > int ret;
> > > > > > > >
> > > > > > > > /* init the MTD data structures */
> > > > > > > > @@ -2688,7 +2689,10 @@ static int gpmi_nand_init(struct gpmi_nand_data *this)
> > > > > > > >
> > > > > > > > /* init the nand_chip{}, we don't support a 16-bit NAND Flash bus. */
> > > > > > > > nand_set_controller_data(chip, this);
> > > > > > > > - nand_set_flash_node(chip, this->pdev->dev.of_node);
> > > > > > > > + np = of_get_next_child(this->pdev->dev.of_node, NULL);
> > > > > > > > + if (!np)
> > > > > > > > + np = this->pdev->dev.of_node;
> > > > > > > > + nand_set_flash_node(chip, np);
> > > > > > > > chip->legacy.block_markbad = gpmi_block_markbad;
> > > > > > > > chip->badblock_pattern = &gpmi_bbt_descr;
> > > > > > > > chip->options |= NAND_NO_SUBPAGE_WRITE;
> > > > > > > >
> > > > > > > > Frank
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > So I don't see a quick fix other than reverting and living with the
> > > > > > > > > dtb_check warning.
> > > > > > > > >
> > > > > > > > > Regards,
> > > > > > > > > Max
> > > > > > > > >
> > > > > > > > > > >
> > > > > > > > > > > Fixes: 8124b4a4a96b ("ARM: dts: imx: move nand related property under nand@0")
> > > > > > > > > > > Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
> > > > > > > > > > >
> > > > > > > > > > > ---
> > > > > > > > > > >
> > > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi | 6 +-----
> > > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi | 6 +-----
> > > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi | 6 +-----
> > > > > > > > > > > .../boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi | 6 +-----
> > > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi | 6 +-----
> > > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi | 6 +-----
> > > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts | 6 +-----
> > > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi | 6 +-----
> > > > > > > > > > > .../boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi | 6 +-----
> > > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi | 6 +-----
> > > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 12 ++++--------
> > > > > > > > > > > .../boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 12 ++++--------
> > > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi | 6 +-----
> > > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts | 6 +-----
> > > > > > > > > > > arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi | 8 ++------
> > > > > > > > > > > 15 files changed, 22 insertions(+), 82 deletions(-)
> > > > > > > > > > >
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > > > > index f452764fae00..547fb141ec0c 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6-logicpd-som.dtsi
> > > > > > > > > > > @@ -36,12 +36,8 @@ &clks {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > status = "okay";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &i2c3 {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > > > > index 58ecdb87c6d4..9975b6ee433d 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-icore.dtsi
> > > > > > > > > > > @@ -172,12 +172,8 @@ eth_phy: ethernet-phy@0 {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > status = "okay";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &i2c1 {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > > > > index 6f3becd33a5b..aa9a442852f4 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-pfla02.dtsi
> > > > > > > > > > > @@ -102,12 +102,8 @@ ethphy: ethernet-phy@0 {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > status = "okay";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &i2c1 {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > > > > index f2140dd8525f..85e278eb2016 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-phytec-phycore-som.dtsi
> > > > > > > > > > > @@ -73,12 +73,8 @@ ethphy: ethernet-phy@3 {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > status = "disabled";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &i2c3 {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > > > > index 131a3428ddb8..c93dbc595ef6 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-skov-cpu.dtsi
> > > > > > > > > > > @@ -260,14 +260,10 @@ fixed-link {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > #address-cells = <1>;
> > > > > > > > > > > #size-cells = <0>;
> > > > > > > > > > > status = "okay";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &i2c3 {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > > > > index d29adfef5fdb..57297d6521cf 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-tx6.dtsi
> > > > > > > > > > > @@ -252,13 +252,9 @@ etnphy: ethernet-phy@0 {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > fsl,no-blockmark-swap;
> > > > > > > > > > > status = "okay";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &i2c1 {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > > > > index 40d530c1dc29..2a6bb5ff808a 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-geam.dts
> > > > > > > > > > > @@ -133,12 +133,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > status = "okay";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &i2c1 {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > > > > index 776f6f78ee46..e34c8cbe36ae 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-isiot.dtsi
> > > > > > > > > > > @@ -101,12 +101,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > status = "disabled";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &i2c1 {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > > > > index 27e4d2aec137..a3ea1b208462 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-phytec-phycore-som.dtsi
> > > > > > > > > > > @@ -63,12 +63,8 @@ ethphy1: ethernet-phy@1 {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > status = "disabled";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &i2c1 {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > > > > index dc53f9286ffe..1992dfb53b45 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-tx6ul.dtsi
> > > > > > > > > > > @@ -296,13 +296,9 @@ &fec2 {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > fsl,no-blockmark-swap;
> > > > > > > > > > > status = "okay";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &i2c2 {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > > > > index eaed2cbf0c82..ec3c1e7301f4 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi
> > > > > > > > > > > @@ -160,15 +160,11 @@ &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > fsl,use-minimum-ecc;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > > > > + nand-ecc-strength = <8>;
> > > > > > > > > > > + nand-ecc-step-size = <512>;
> > > > > > > > > > > status = "okay";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > > > > - nand-ecc-strength = <8>;
> > > > > > > > > > > - nand-ecc-step-size = <512>;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > /* I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board) */
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > > > > index 3dfd43b32055..43518bf07602 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > > > > > > > > > > @@ -43,15 +43,11 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > > > > + nand-ecc-strength = <0>;
> > > > > > > > > > > + nand-ecc-step-size = <0>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > status = "okay";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > > > > - nand-ecc-strength = <0>;
> > > > > > > > > > > - nand-ecc-step-size = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &iomuxc {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > > > > index fc298f57bfff..83b9de17cee2 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-myir-mys-6ulx.dtsi
> > > > > > > > > > > @@ -60,12 +60,8 @@ ethphy0: ethernet-phy@0 {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > status = "disabled";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &uart1 {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > > > > index 8ec18eae98a4..2d9f495660c9 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx6ulz-bsh-smm-m2.dts
> > > > > > > > > > > @@ -25,12 +25,8 @@ usdhc2_pwrseq: usdhc2-pwrseq {
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > status = "okay";
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > &snvs_poweroff {
> > > > > > > > > > > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > > > > index a41dc4edfc0d..8666dcd7fe97 100644
> > > > > > > > > > > --- a/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > > > > +++ b/arch/arm/boot/dts/nxp/imx/imx7-colibri.dtsi
> > > > > > > > > > > @@ -375,14 +375,10 @@ &gpio7 {
> > > > > > > > > > > /* NAND on such SKUs */
> > > > > > > > > > > &gpmi {
> > > > > > > > > > > fsl,use-minimum-ecc;
> > > > > > > > > > > + nand-ecc-mode = "hw";
> > > > > > > > > > > + nand-on-flash-bbt;
> > > > > > > > > > > pinctrl-names = "default";
> > > > > > > > > > > pinctrl-0 = <&pinctrl_gpmi_nand>;
> > > > > > > > > > > -
> > > > > > > > > > > - nand@0 {
> > > > > > > > > > > - reg = <0>;
> > > > > > > > > > > - nand-ecc-mode = "hw";
> > > > > > > > > > > - nand-on-flash-bbt;
> > > > > > > > > > > - };
> > > > > > > > > > > };
> > > > > > > > > > >
> > > > > > > > > > > /* On-module Power I2C */
> > > > > > > > > > > --
> > > > > > > > > > > 2.42.0
> > > > > > > > > > >
^ permalink raw reply [flat|nested] 18+ messages in thread
end of thread, other threads:[~2026-03-09 14:50 UTC | newest]
Thread overview: 18+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-02-19 15:11 [PATCH] Revert "ARM: dts: imx: move nand related property under nand@0" max.oss.09
2026-02-19 16:01 ` Frank Li
2026-02-19 16:30 ` Francesco Dolcini
2026-02-19 17:06 ` Max Krummenacher
2026-02-19 19:41 ` Frank Li
2026-02-25 17:40 ` Max Krummenacher
2026-02-25 17:51 ` Frank Li
2026-02-26 12:47 ` Max Krummenacher
2026-02-26 15:12 ` Frank Li
2026-03-02 10:53 ` Max Krummenacher
2026-03-02 15:49 ` Frank Li
2026-03-05 20:05 ` Frank Li
2026-03-05 20:37 ` Krzysztof Kozlowski
2026-03-05 22:51 ` Frank Li
2026-03-06 7:12 ` Krzysztof Kozlowski
2026-03-09 10:41 ` Max Krummenacher
2026-03-09 14:49 ` Frank Li
2026-03-06 15:24 ` Frank Li
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