Thread (2 messages) 2 messages, 2 authors, 2025-08-22

Re: [PATCH] ARM: dts: microchip: sama7d65: Force SDMMC Legacy mode

From: Nicolas Ferre <nicolas.ferre@microchip.com>
Date: 2025-08-22 14:57:15
Also in: linux-devicetree, lkml

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
quoted hunk ↗ jump to hunk
---
  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";
  
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