]> www.infradead.org Git - users/jedix/linux-maple.git/commit
ARM: dts: microchip: sama5d29_curiosity: Add no-1-8-v property to sdmmc0 node
authorCristian Birsan <cristian.birsan@microchip.com>
Tue, 19 Nov 2024 16:01:06 +0000 (18:01 +0200)
committerClaudiu Beznea <claudiu.beznea@tuxon.dev>
Thu, 2 Jan 2025 10:33:56 +0000 (12:33 +0200)
commitc21c23a0f2e9869676eff0d53fb89e151e14c873
treed1d2442210a0abb55b1b08245d9f43429124c514
parent747800ee7fdf80533538318608ae922f8b3d0069
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>
arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts