ARM: dts: microchip: sama5d27_wlsom1_ek: Add no-1-8-v property to sdmmc0 node
authorCristian Birsan <cristian.birsan@microchip.com>
Tue, 19 Nov 2024 16:01:07 +0000 (18:01 +0200)
committerClaudiu Beznea <claudiu.beznea@tuxon.dev>
Thu, 2 Jan 2025 10:33:56 +0000 (12:33 +0200)
commit4d9e5965df04c0adf260c3009c55d5fe240f7286
tree72b44948a5c067c708a6042fda4d6ba0fc952960
parentc21c23a0f2e9869676eff0d53fb89e151e14c873
ARM: dts: microchip: sama5d27_wlsom1_ek: 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, 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 <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/20241119160107.598411-3-cristian.birsan@microchip.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1_ek.dts