diff mbox series

[2/4] ARM: dts: stm32: Disable SDMMC1 CKIN feedback clock

Message ID 20201201102920.84051-2-marex@denx.de
State Accepted
Commit 75df748b87f86e87a4393d8ebc274e5806f2079a
Delegated to: Patrick Delaunay
Headers show
Series [1/4] ARM: dts: stm32: Enable internal pull-ups for SDMMC1 on DHCOM SoM | expand

Commit Message

Marek Vasut Dec. 1, 2020, 10:29 a.m. UTC
The STM32MP1 DHCOM SoM can be built with either bus voltage level shifter
or without one on the SDMMC1 interface. Because the SDMMC1 interface is
limited to 50 MHz and hence SD high-speed anyway, disable the SD feedback
clock to permit operation of the same U-Boot image on both SoM with and
without voltage level shifter.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
---
 arch/arm/dts/stm32mp15xx-dhcom.dtsi | 1 -
 1 file changed, 1 deletion(-)

Comments

Patrick Delaunay Dec. 8, 2020, 5:25 p.m. UTC | #1
Hi Marek,

> From: Marek Vasut <marex@denx.de>
> Sent: mardi 1 d├ęcembre 2020 11:29
>
> The STM32MP1 DHCOM SoM can be built with either bus voltage level shifter or without one on the SDMMC1 interface. Because the SDMMC1 interface is limited to 50 MHz and hence SD high-speed anyway, disable the SD feedback clock to permit operation of the same U-Boot image on both SoM with and without voltage level shifter.
>
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Patrice Chotard <patrice.chotard@st.com>
> Cc: Patrick Delaunay <patrick.delaunay@st.com>
> ---
>   arch/arm/dts/stm32mp15xx-dhcom.dtsi | 1 -
>   1 file changed, 1 deletion(-)
>
> diff --git a/arch/arm/dts/stm32mp15xx-dhcom.dtsi b/arch/arm/dts/stm32mp15xx-dhcom.dtsi
> index 9049245c5b..dafcce4323 100644
> --- a/arch/arm/dts/stm32mp15xx-dhcom.dtsi
> +++ b/arch/arm/dts/stm32mp15xx-dhcom.dtsi
> @@ -333,7 +333,6 @@
>   	disable-wp;
>   	st,sig-dir;
>   	st,neg-edge;
> -	st,use-ckin;
>   	bus-width = <4>;
>   	vmmc-supply = <&vdd_sd>;
>   	status = "okay";
> --
> 2.29.2
>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>

Thanks

Patrick
diff mbox series

Patch

diff --git a/arch/arm/dts/stm32mp15xx-dhcom.dtsi b/arch/arm/dts/stm32mp15xx-dhcom.dtsi
index 9049245c5b..dafcce4323 100644
--- a/arch/arm/dts/stm32mp15xx-dhcom.dtsi
+++ b/arch/arm/dts/stm32mp15xx-dhcom.dtsi
@@ -333,7 +333,6 @@ 
 	disable-wp;
 	st,sig-dir;
 	st,neg-edge;
-	st,use-ckin;
 	bus-width = <4>;
 	vmmc-supply = <&vdd_sd>;
 	status = "okay";