On Wed 12 Dec 09:13 PST 2018, Loic Poulain wrote:
> In the same way as for msm8974-hammerhead, l21 load, used for SDCARD
> VMMC, needs to be increased in order to prevent any voltage drop issues
> (due to limited current) happening with some SDCARDS or during specific
> operations (e.g. write).
>
> Fixes: 660a9763c6a9 (arm64: dts: qcom: db820c: Add pm8994 regulator node)
> Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
I agree with Jeff, that the sdhci-msm (or mmc framework even) should
take care of this. But I suggest we merge this for now, regardless.
Regards,
Bjorn
> ---
> arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
> index 104cad9..c15e2c0 100644
> --- a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
> +++ b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi
> @@ -634,6 +634,8 @@
> l21 {
> regulator-min-microvolt = <2950000>;
> regulator-max-microvolt = <2950000>;
> + regulator-allow-set-load;
> + regulator-system-load = <200000>;
> };
> l22 {
> regulator-min-microvolt = <3300000>;
> --
> 2.7.4
>
