On Thu, Mar 11, 2021 at 01:02:58PM +0100, Martin Kepplinger wrote:
> From: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@xxxxxxx>
>
> Commit 66d3f246d79f ("arm64: dts: librem5: Don't mark buck3 as always on")
I cannot find this commit.
Shawn
> removed always-on marking from GPU regulator, which is great for power
> saving - however it introduces additional i2c0 traffic which can be deadly
> for devices from the Dogwood batch.
>
> To workaround the i2c0 shutdown issue on Dogwood, this commit marks
> buck3 as always-on again - but only for Dogwood (r3).
>
> Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@xxxxxxx>
> Signed-off-by: Martin Kepplinger <martin.kepplinger@xxxxxxx>
> ---
> arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts
> index 0d38327043f8..cd3c3edd48fa 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts
> @@ -28,6 +28,10 @@ &bq25895 {
> ti,termination-current = <144000>; /* uA */
> };
>
> +&buck3_reg {
> + regulator-always-on;
> +};
> +
> &proximity {
> proximity-near-level = <25>;
> };
> --
> 2.30.1
>
