From eabbe9e797a108fe92a122c2fe7e42baba7dbc06 Mon Sep 17 00:00:00 2001 From: Cristian Birsan Date: Tue, 19 Nov 2024 18:01:07 +0200 Subject: [PATCH] ARM: dts: microchip: sama5d27_wlsom1_ek: Add no-1-8-v property to sdmmc0 node BugLink: https://bugs.launchpad.net/bugs/2111953 [ Upstream commit 4d9e5965df04c0adf260c3009c55d5fe240f7286 ] Add no-1-8-v property to sdmmc0 node to keep VDDSDMMC power rail at 3.3V. This property will stop the LDO regulator from switching to 1.8V when the MMC core detects an UHS SD Card. VDDSDMMC power rail is used by all the SDMMC interface pins in GPIO mode (PA0 - PA13). On this board, PA10 is used as GPIO to enable the power switch controlling USB Vbus for the USB Host. The change is needed to fix the PA10 voltage level to 3.3V instead of 1.8V. Fixes: 5d4c3cfb63fe ("ARM: dts: at91: sama5d27_wlsom1: add SAMA5D27 wlsom1 and wlsom1-ek") Suggested-by: Mihai Sain Signed-off-by: Cristian Birsan Tested-by: Andrei Simion Link: https://lore.kernel.org/r/20241119160107.598411-3-cristian.birsan@microchip.com Signed-off-by: Claudiu Beznea Signed-off-by: Sasha Levin Signed-off-by: Manuel Diewald Signed-off-by: Mehmet Basaran --- arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1_ek.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1_ek.dts b/arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1_ek.dts index 15239834d886..35a933eec573 100644 --- a/arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1_ek.dts +++ b/arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1_ek.dts @@ -197,6 +197,7 @@ &sdmmc0 { bus-width = <4>; + no-1-8-v; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sdmmc0_default>; status = "okay";