* [PATCH 2/2] arm64: dts: imx8mn: Expand EEPROM description on ifm VHIP4 EvalBoard
2026-08-10 21:34 [PATCH 1/2] arm64: Select HAVE_SHARED_GPIOS for ARCH_MXC Marek Vasut
@ 2026-08-10 21:34 ` Marek Vasut
2026-08-11 7:30 ` Bartosz Golaszewski
2026-08-10 21:44 ` [PATCH 1/2] arm64: Select HAVE_SHARED_GPIOS for ARCH_MXC Frank Li
2026-08-11 7:29 ` Bartosz Golaszewski
2 siblings, 1 reply; 6+ messages in thread
From: Marek Vasut @ 2026-08-10 21:34 UTC (permalink / raw)
To: linux-arm-kernel
Cc: Marek Vasut, Bartosz Golaszewski, Catalin Marinas, Conor Dooley,
Fabio Estevam, Fedor Ross, Frank Li, Krzysztof Kozlowski,
Linus Walleij, Mark Rutland, Rob Herring, Will Deacon, devicetree,
imx, linux-kernel
Describe the EEPROM write protect GPIOs and labels on VHIP4 EvalBoard.
Signed-off-by: Marek Vasut <marex@nabladev.com>
---
Cc: Bartosz Golaszewski <brgl@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Fedor Ross <fedor.ross@ifm.com>
Cc: Frank Li <Frank.Li@nxp.com>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: imx@lists.linux.dev
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
.../imx8mn-vhip4-evalboard-common.dtsi | 3 +-
.../freescale/imx8mn-vhip4-evalboard-v1.dts | 8 ++++++
.../freescale/imx8mn-vhip4-evalboard-v2.dts | 28 ++++++++++++++++---
3 files changed, 34 insertions(+), 5 deletions(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-common.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-common.dtsi
index aaf9761703aaf..73b1ed2632a39 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-common.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-common.dtsi
@@ -142,8 +142,9 @@ &i2c1 {
pinctrl-0 = <&pinctrl_i2c1>;
pinctrl-1 = <&pinctrl_i2c1_gpio>;
- eeprom@51 {
+ cfg_eeprom: eeprom@51 {
compatible = "atmel,24c128";
+ label = "ifm-deviceinfo";
reg = <0x51>;
};
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1.dts b/arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1.dts
index a8f7c226a61f8..98dd241a9d5ce 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1.dts
@@ -13,6 +13,11 @@ / {
"ifm,imx8mn-vhip4", "fsl,imx8mn";
};
+&cfg_eeprom {
+ /* Shared with logging EEPROM on v1 hardware */
+ wp-gpios = <&gpio5 20 GPIO_ACTIVE_HIGH>;
+};
+
&ifm_led {
pinctrl-1 = <&pinctrl_gpio_led_v1>;
@@ -90,7 +95,10 @@ temperature-sensor@48 {
eeprom@50 {
compatible = "atmel,24c128";
+ label = "ifm-logging";
reg = <0x50>;
+ /* Shared with configuration EEPROM on v1 hardware */
+ wp-gpios = <&gpio5 20 GPIO_ACTIVE_HIGH>;
};
};
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v2.dts b/arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v2.dts
index 43fd4d0041ef3..04fa43b12d2b5 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v2.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v2.dts
@@ -20,6 +20,12 @@ multi-led {
};
};
+&cfg_eeprom {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_cfgeeprom>;
+ wp-gpios = <&gpio2 11 GPIO_ACTIVE_HIGH>;
+};
+
&ifm_led {
pinctrl-1 = <&pinctrl_gpio_led_v2>;
@@ -87,7 +93,11 @@ temperature-sensor@48 {
eeprom@54 {
compatible = "atmel,24c128";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_logeeprom>;
+ label = "ifm-logging";
reg = <0x54>;
+ wp-gpios = <&gpio5 3 GPIO_ACTIVE_HIGH>;
};
};
@@ -103,6 +113,13 @@ &ifm_pmic {
};
&iomuxc {
+ pinctrl_cfgeeprom: cfgeeprom-grp {
+ fsl,pins = <
+ /* CFG_EEPROM_WP */
+ MX8MN_IOMUXC_SD1_STROBE_GPIO2_IO11 0x140
+ >;
+ };
+
pinctrl_ecspi1_cs: ecspi1-cs-grp {
fsl,pins = <
/* KS8794 nCS */
@@ -143,12 +160,8 @@ pinctrl_i2c1_gpio: i2c1-gpio-grp {
fsl,pins = <
MX8MN_IOMUXC_SD1_DATA4_GPIO2_IO6 0x56
MX8MN_IOMUXC_SD1_DATA5_GPIO2_IO7 0xd6
- /* CFG_EEPROM_WP */
- MX8MN_IOMUXC_SD1_STROBE_GPIO2_IO11 0x140
/* RTC_nIRQ */
MX8MN_IOMUXC_SPDIF_EXT_CLK_GPIO5_IO5 0x116
- /* LOG_EE_WP */
- MX8MN_IOMUXC_SPDIF_TX_GPIO5_IO3 0x140
>;
};
@@ -166,6 +179,13 @@ MX8MN_IOMUXC_I2C3_SDA_GPIO5_IO19 0xd6
>;
};
+ pinctrl_logeeprom: logeeprom-grp {
+ fsl,pins = <
+ /* LOG_EE_WP */
+ MX8MN_IOMUXC_SPDIF_TX_GPIO5_IO3 0x140
+ >;
+ };
+
pinctrl_mcp2518: mcp2518-grp {
fsl,pins = <
/* CAN0_CLKO */
--
2.53.0
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH 1/2] arm64: Select HAVE_SHARED_GPIOS for ARCH_MXC
2026-08-10 21:34 [PATCH 1/2] arm64: Select HAVE_SHARED_GPIOS for ARCH_MXC Marek Vasut
2026-08-10 21:34 ` [PATCH 2/2] arm64: dts: imx8mn: Expand EEPROM description on ifm VHIP4 EvalBoard Marek Vasut
@ 2026-08-10 21:44 ` Frank Li
2026-08-10 21:54 ` Marek Vasut
2026-08-11 7:29 ` Bartosz Golaszewski
2 siblings, 1 reply; 6+ messages in thread
From: Frank Li @ 2026-08-10 21:44 UTC (permalink / raw)
To: Marek Vasut
Cc: linux-arm-kernel, Bartosz Golaszewski, Catalin Marinas,
Conor Dooley, Fabio Estevam, Fedor Ross, Frank Li,
Krzysztof Kozlowski, Linus Walleij, Mark Rutland, Rob Herring,
Will Deacon, devicetree, imx, linux-kernel
On Mon, Aug 10, 2026 at 11:34:38PM +0200, Marek Vasut wrote:
> Some NXP i.MX platforms use shared GPIOs. Enable support for them by
> selecting the Kconfig switch provided by GPIOLIB.
>
> Signed-off-by: Marek Vasut <marex@nabladev.com>
> ---
Haibo have similar patch
https://lore.kernel.org/imx/20260730-can-share-silent-v1-2-63fd603f943d@nxp.com/
But I hope the SoC maintainer provide review/ack-by tags
Frank
> Cc: Bartosz Golaszewski <brgl@kernel.org>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Conor Dooley <conor+dt@kernel.org>
> Cc: Fabio Estevam <festevam@gmail.com>
> Cc: Fedor Ross <fedor.ross@ifm.com>
> Cc: Frank Li <Frank.Li@nxp.com>
> Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
> Cc: Linus Walleij <linus.walleij@linaro.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Rob Herring <robh@kernel.org>
> Cc: Will Deacon <will@kernel.org>
> Cc: devicetree@vger.kernel.org
> Cc: imx@lists.linux.dev
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-kernel@vger.kernel.org
> ---
> arch/arm64/Kconfig.platforms | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
> index d2acfac730037..bc279b864d3cb 100644
> --- a/arch/arm64/Kconfig.platforms
> +++ b/arch/arm64/Kconfig.platforms
> @@ -275,6 +275,7 @@ config ARCH_MXC
> bool "NXP i.MX SoC family"
> select ARM64_ERRATUM_843419
> select ARM64_ERRATUM_845719 if COMPAT
> + select HAVE_SHARED_GPIOS
> select IMX_GPCV2
> select IMX_GPCV2_PM_DOMAINS
> select PM
> --
> 2.53.0
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2] arm64: Select HAVE_SHARED_GPIOS for ARCH_MXC
2026-08-10 21:34 [PATCH 1/2] arm64: Select HAVE_SHARED_GPIOS for ARCH_MXC Marek Vasut
2026-08-10 21:34 ` [PATCH 2/2] arm64: dts: imx8mn: Expand EEPROM description on ifm VHIP4 EvalBoard Marek Vasut
2026-08-10 21:44 ` [PATCH 1/2] arm64: Select HAVE_SHARED_GPIOS for ARCH_MXC Frank Li
@ 2026-08-11 7:29 ` Bartosz Golaszewski
2 siblings, 0 replies; 6+ messages in thread
From: Bartosz Golaszewski @ 2026-08-11 7:29 UTC (permalink / raw)
To: Marek Vasut
Cc: Bartosz Golaszewski, Catalin Marinas, Conor Dooley, Fabio Estevam,
Fedor Ross, Frank Li, Krzysztof Kozlowski, Linus Walleij,
Mark Rutland, Rob Herring, Will Deacon, devicetree, imx,
linux-kernel, linux-arm-kernel
On Mon, 10 Aug 2026 23:34:38 +0200, Marek Vasut <marex@nabladev.com> said:
> Some NXP i.MX platforms use shared GPIOs. Enable support for them by
> selecting the Kconfig switch provided by GPIOLIB.
>
> Signed-off-by: Marek Vasut <marex@nabladev.com>
> ---
> Cc: Bartosz Golaszewski <brgl@kernel.org>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Conor Dooley <conor+dt@kernel.org>
> Cc: Fabio Estevam <festevam@gmail.com>
> Cc: Fedor Ross <fedor.ross@ifm.com>
> Cc: Frank Li <Frank.Li@nxp.com>
> Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
> Cc: Linus Walleij <linus.walleij@linaro.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Rob Herring <robh@kernel.org>
> Cc: Will Deacon <will@kernel.org>
> Cc: devicetree@vger.kernel.org
> Cc: imx@lists.linux.dev
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-kernel@vger.kernel.org
> ---
> arch/arm64/Kconfig.platforms | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
> index d2acfac730037..bc279b864d3cb 100644
> --- a/arch/arm64/Kconfig.platforms
> +++ b/arch/arm64/Kconfig.platforms
> @@ -275,6 +275,7 @@ config ARCH_MXC
> bool "NXP i.MX SoC family"
> select ARM64_ERRATUM_843419
> select ARM64_ERRATUM_845719 if COMPAT
> + select HAVE_SHARED_GPIOS
> select IMX_GPCV2
> select IMX_GPCV2_PM_DOMAINS
> select PM
> --
> 2.53.0
>
>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
^ permalink raw reply [flat|nested] 6+ messages in thread