diff options
| author |   Cristian Birsan <cristian.birsan@microchip.com> | 2024-11-19 18:01:06 +0200 |
|---|---|---|
| committer |   Claudiu Beznea <claudiu.beznea@tuxon.dev> | 2025-01-02 12:33:56 +0200 |
| commit | c21c23a0f2e9869676eff0d53fb89e151e14c873 (patch) | |
| tree | d1d2442210a0abb55b1b08245d9f43429124c514 | |
| parent | ARM: dts: at91: Add sama7d65 pinmux (diff) | |
| download | wireguard-linux-c21c23a0f2e9869676eff0d53fb89e151e14c873.tar.xz wireguard-linux-c21c23a0f2e9869676eff0d53fb89e151e14c873.zip | |
ARM: dts: microchip: sama5d29_curiosity: Add no-1-8-v property to sdmmc0 node
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, PA6 is used as GPIO to enable the power switch controlling
USB Vbus for the USB Host. The change is needed to fix the PA6 voltage
level to 3.3V instead of 1.8V.
Fixes: d85c4229e925 ("ARM: dts: at91: sama5d29_curiosity: Add device tree for sama5d29_curiosity board")
Suggested-by: Mihai Sain <mihai.sain@microchip.com>
Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>
Tested-by: Andrei Simion <andrei.simion@microchip.com>
Link: https://lore.kernel.org/r/20241119160107.598411-2-cristian.birsan@microchip.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
| -rw-r--r-- | arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts index b6684bf67d3e..7be215781549 100644 --- a/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts +++ b/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts @@ -514,6 +514,7 @@ &sdmmc0 { bus-width = <4>; + no-1-8-v; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sdmmc0_default>; disable-wp; |