* [PATCH] ARM: dts: microchip: sama7d65: Force SDMMC Legacy mode
@ 2025-08-19 17:05 Ryan.Wanner
2025-08-22 14:56 ` Nicolas Ferre
0 siblings, 1 reply; 2+ messages in thread
From: Ryan.Wanner @ 2025-08-19 17:05 UTC (permalink / raw)
To: robh, krzk+dt, conor+dt, nicolas.ferre, alexandre.belloni,
claudiu.beznea
Cc: devicetree, linux-arm-kernel, linux-kernel, Ryan Wanner
From: Ryan Wanner <Ryan.Wanner@microchip.com>
The SDMMC in this IP currently only supports legacy mode
due to a hardware quirk, setting the flags to reflect the limitation.
Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
---
arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
index 7eaf6ca233ec..d086437f5e6f 100644
--- a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
+++ b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
@@ -387,6 +387,8 @@ &rtt {
&sdmmc1 {
bus-width = <4>;
+ no-1-8-v;
+ sdhci-caps-mask = <0x0 0x00200000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sdmmc1_default>;
status = "okay";
--
2.43.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] ARM: dts: microchip: sama7d65: Force SDMMC Legacy mode
2025-08-19 17:05 [PATCH] ARM: dts: microchip: sama7d65: Force SDMMC Legacy mode Ryan.Wanner
@ 2025-08-22 14:56 ` Nicolas Ferre
0 siblings, 0 replies; 2+ messages in thread
From: Nicolas Ferre @ 2025-08-22 14:56 UTC (permalink / raw)
To: Ryan.Wanner, robh, krzk+dt, conor+dt, alexandre.belloni,
claudiu.beznea, Aubin Constans
Cc: devicetree, linux-arm-kernel, linux-kernel
On 19/08/2025 at 19:05, Ryan.Wanner@microchip.com wrote:
> From: Ryan Wanner <Ryan.Wanner@microchip.com>
>
> The SDMMC in this IP currently only supports legacy mode
... but we're working on it ;-)
> due to a hardware quirk, setting the flags to reflect the limitation.
>
> Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
That's fair enough for the time being:
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Regards,
Nicolas
> ---
> arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
> index 7eaf6ca233ec..d086437f5e6f 100644
> --- a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
> +++ b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
> @@ -387,6 +387,8 @@ &rtt {
>
> &sdmmc1 {
> bus-width = <4>;
> + no-1-8-v;
> + sdhci-caps-mask = <0x0 0x00200000>;
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_sdmmc1_default>;
> status = "okay";
^ permalink raw reply [flat|nested] 2+ messages in thread
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2025-08-19 17:05 [PATCH] ARM: dts: microchip: sama7d65: Force SDMMC Legacy mode Ryan.Wanner
2025-08-22 14:56 ` Nicolas Ferre
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