Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2024-12-29 17:22:07 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ARM: dts: microchip: sama5d29_curiosity: Add no-1-8-v property to sdmmc0 node

Browse Source 
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: d85c4229e9 ("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>
This commit is contained in:
Cristian Birsan 2024-11-19 18:01:06 +02:00 committed by Claudiu Beznea
parent d1fb214e26
commit 29e0bd689a
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts
View File

@ -514,6 +514,7 @@ kernel@200000 {
&sdmmc0 {
bus-width = <4>;
no-1-8-v;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sdmmc0_default>;
disable-wp;