On 2022-03-30 12:26:39, Joel Selvaraj wrote:
> Xiaomi Poco F1 uses the QCOM WLED driver for backlight control.
> Enable and link it to the panel to use it.
>
> Signed-off-by: Joel Selvaraj <j...@jsfamily.in>
> ---
> .../arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts
> b/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts
> index 798fc72578a7..3ebb0f9905d3 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts
> +++ b/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium.dts
> @@ -231,6 +231,7 @@ panel@0 {
> #address-cells = <1>;
> #size-cells = <0>;
>
> + backlight = <&pmi8998_wled>;
> reset-gpios = <&tlmm 6 GPIO_ACTIVE_LOW>;
>
> port {
> @@ -314,6 +315,18 @@ vol_up_pin_a: vol-up-active {
> };
> };
>
> +&pmi8998_wled {
> + status = "okay";
> + qcom,current-boost-limit = <970>;
> + qcom,ovp-millivolt = <29600>;
> + qcom,current-limit-microamp = <20000>;
> + qcom,enabled-strings = <0 1>;
> + qcom,num-strings = <2>;
No need to set both nowadays, the driver will even print a warning in
this case:
https://lore.kernel.org/linux-arm-msm/20211115203459.1634079-6-marijn.suij...@somainline.org/
Sticking with qcom,num-strings is probably the right choice here.
- Marijn
> + qcom,switching-freq = <600>;
> + qcom,external-pfet;
> + qcom,cabc;
> +};
> +
> &pm8998_pon {
> resin {
> compatible = "qcom,pm8941-resin";
> --
> 2.35.1
>
