| Message ID | 20241119160107.598411-2-cristian.birsan@microchip.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | ARM: dts: microchip: Add no-1-8-v property to sdmmc0 node | expand |
> From: Cristian Birsan <cristian.birsan@microchip.com> > > 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> Hi, Tested-by: Andrei Simion <andrei.simion@microchip.com> > --- > arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts > index 951a0c97d3c6..5933840bb8f7 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 @@ kernel@200000 { > > &sdmmc0 { > bus-width = <4>; > + no-1-8-v; > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_sdmmc0_default>; > disable-wp; Best Regards, -- Andrei Simion
diff --git a/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts index 951a0c97d3c6..5933840bb8f7 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 @@ kernel@200000 { &sdmmc0 { bus-width = <4>; + no-1-8-v; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sdmmc0_default>; disable-wp;