Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | Anson Huang <> | Subject | [PATCH] arm64: dts: imx8mq-evk: VDD_ARM power rail is always ON | Date | Wed, 9 Oct 2019 15:04:19 +0800 |
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On i.MX8MQ EVK board, VDD_ARM is from a DC-DC converter which is always ON, the GPIO1_IO13 is ONLY to switch VDD_ARM's voltage between 0.9V and 1V for CPU DVFS, so VDD_ARM's GPIO regulator should be always ON to avoid below confusion after kernel boot up:
imx8mqevk login: [ 31.776619] vdd_arm: disabling
Signed-off-by: Anson Huang <Anson.Huang@nxp.com> --- arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts index 6ede46f..4e0a281 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts @@ -48,6 +48,8 @@ gpios = <&gpio1 13 GPIO_ACTIVE_HIGH>; states = <1000000 0x0 900000 0x1>; + regulator-boot-on; + regulator-always-on; }; wm8524: audio-codec { -- 2.7.4
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