* [PATCH] arm64: zynqmp: Disable Tri-state for SDIO
@ 2024-03-21 8:52 Tejas Bhumkar
2024-03-21 8:52 ` Tejas Bhumkar
2024-03-25 14:17 ` Michal Simek
0 siblings, 2 replies; 3+ messages in thread
From: Tejas Bhumkar @ 2024-03-21 8:52 UTC (permalink / raw)
To: u-boot; +Cc: michal.simek, trini, venkatesh.abbarapu, git
Since the zynqmp pinctrl driver now includes support for the
tri-state registers, ensure that the pins needing output-enable
are correctly configured for SOMs.
Currently, there is an issue with the detection of the MMC for
the SOM kv260, resulting in the following error:
ZynqMP> mmc dev 1
Card did not respond to voltage select! : -110
To address this problem, configure the SDIO pins for output-enable
to enable MMC detection.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Tejas Bhumkar <tejas.arvind.bhumkar@amd.com>
---
arch/arm/dts/zynqmp-sck-kv-g-revA.dtso | 1 +
arch/arm/dts/zynqmp-sck-kv-g-revB.dtso | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/arm/dts/zynqmp-sck-kv-g-revA.dtso b/arch/arm/dts/zynqmp-sck-kv-g-revA.dtso
index 6d0d5c487d..561b546e37 100644
--- a/arch/arm/dts/zynqmp-sck-kv-g-revA.dtso
+++ b/arch/arm/dts/zynqmp-sck-kv-g-revA.dtso
@@ -342,6 +342,7 @@
slew-rate = <SLEW_RATE_SLOW>;
power-source = <IO_STANDARD_LVCMOS18>;
bias-disable;
+ output-enable;
};
conf-cd {
diff --git a/arch/arm/dts/zynqmp-sck-kv-g-revB.dtso b/arch/arm/dts/zynqmp-sck-kv-g-revB.dtso
index a4b4465d20..13876fb47d 100644
--- a/arch/arm/dts/zynqmp-sck-kv-g-revB.dtso
+++ b/arch/arm/dts/zynqmp-sck-kv-g-revB.dtso
@@ -329,6 +329,7 @@
slew-rate = <SLEW_RATE_SLOW>;
power-source = <IO_STANDARD_LVCMOS18>;
bias-disable;
+ output-enable;
};
conf-cd {
--
2.37.6
^ permalink raw reply related [flat|nested] 3+ messages in thread* [PATCH] arm64: zynqmp: Disable Tri-state for SDIO
2024-03-21 8:52 [PATCH] arm64: zynqmp: Disable Tri-state for SDIO Tejas Bhumkar
@ 2024-03-21 8:52 ` Tejas Bhumkar
2024-03-25 14:17 ` Michal Simek
1 sibling, 0 replies; 3+ messages in thread
From: Tejas Bhumkar @ 2024-03-21 8:52 UTC (permalink / raw)
To: u-boot; +Cc: michal.simek, trini, venkatesh.abbarapu, git
Since the zynqmp pinctrl driver now includes support for the
tri-state registers, ensure that the pins needing output-enable
are correctly configured for SOMs.
Currently, there is an issue with the detection of the MMC for
the SOM kv260, resulting in the following error:
ZynqMP> mmc dev 1
Card did not respond to voltage select! : -110
To address this problem, configure the SDIO pins for output-enable
to enable MMC detection.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Tejas Bhumkar <tejas.arvind.bhumkar@amd.com>
---
arch/arm/dts/zynqmp-sck-kv-g-revA.dtso | 1 +
arch/arm/dts/zynqmp-sck-kv-g-revB.dtso | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/arm/dts/zynqmp-sck-kv-g-revA.dtso b/arch/arm/dts/zynqmp-sck-kv-g-revA.dtso
index 6d0d5c487d..561b546e37 100644
--- a/arch/arm/dts/zynqmp-sck-kv-g-revA.dtso
+++ b/arch/arm/dts/zynqmp-sck-kv-g-revA.dtso
@@ -342,6 +342,7 @@
slew-rate = <SLEW_RATE_SLOW>;
power-source = <IO_STANDARD_LVCMOS18>;
bias-disable;
+ output-enable;
};
conf-cd {
diff --git a/arch/arm/dts/zynqmp-sck-kv-g-revB.dtso b/arch/arm/dts/zynqmp-sck-kv-g-revB.dtso
index a4b4465d20..13876fb47d 100644
--- a/arch/arm/dts/zynqmp-sck-kv-g-revB.dtso
+++ b/arch/arm/dts/zynqmp-sck-kv-g-revB.dtso
@@ -329,6 +329,7 @@
slew-rate = <SLEW_RATE_SLOW>;
power-source = <IO_STANDARD_LVCMOS18>;
bias-disable;
+ output-enable;
};
conf-cd {
--
2.37.6
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] arm64: zynqmp: Disable Tri-state for SDIO
2024-03-21 8:52 [PATCH] arm64: zynqmp: Disable Tri-state for SDIO Tejas Bhumkar
2024-03-21 8:52 ` Tejas Bhumkar
@ 2024-03-25 14:17 ` Michal Simek
1 sibling, 0 replies; 3+ messages in thread
From: Michal Simek @ 2024-03-25 14:17 UTC (permalink / raw)
To: Tejas Bhumkar, u-boot; +Cc: trini, venkatesh.abbarapu, git
On 3/21/24 09:52, Tejas Bhumkar wrote:
> Since the zynqmp pinctrl driver now includes support for the
> tri-state registers, ensure that the pins needing output-enable
> are correctly configured for SOMs.
>
> Currently, there is an issue with the detection of the MMC for
> the SOM kv260, resulting in the following error:
> ZynqMP> mmc dev 1
> Card did not respond to voltage select! : -110
>
> To address this problem, configure the SDIO pins for output-enable
> to enable MMC detection.
>
> Signed-off-by: Michal Simek <michal.simek@amd.com>
> Signed-off-by: Tejas Bhumkar <tejas.arvind.bhumkar@amd.com>
> ---
> arch/arm/dts/zynqmp-sck-kv-g-revA.dtso | 1 +
> arch/arm/dts/zynqmp-sck-kv-g-revB.dtso | 1 +
> 2 files changed, 2 insertions(+)
>
> diff --git a/arch/arm/dts/zynqmp-sck-kv-g-revA.dtso b/arch/arm/dts/zynqmp-sck-kv-g-revA.dtso
> index 6d0d5c487d..561b546e37 100644
> --- a/arch/arm/dts/zynqmp-sck-kv-g-revA.dtso
> +++ b/arch/arm/dts/zynqmp-sck-kv-g-revA.dtso
> @@ -342,6 +342,7 @@
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> bias-disable;
> + output-enable;
> };
>
> conf-cd {
> diff --git a/arch/arm/dts/zynqmp-sck-kv-g-revB.dtso b/arch/arm/dts/zynqmp-sck-kv-g-revB.dtso
> index a4b4465d20..13876fb47d 100644
> --- a/arch/arm/dts/zynqmp-sck-kv-g-revB.dtso
> +++ b/arch/arm/dts/zynqmp-sck-kv-g-revB.dtso
> @@ -329,6 +329,7 @@
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> bias-disable;
> + output-enable;
> };
>
> conf-cd {
Applied.
M
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2024-03-25 14:17 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2024-03-21 8:52 [PATCH] arm64: zynqmp: Disable Tri-state for SDIO Tejas Bhumkar
2024-03-21 8:52 ` Tejas Bhumkar
2024-03-25 14:17 ` Michal Simek
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