lkml.org 
[lkml]   [2022]   [Feb]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH 1/2] arm64: dts: qcom: c630: Add backlight controller
From

On 2/7/22 10:16 PM, Bjorn Andersson wrote:
> The Lenovo Yoga C630 uses the PWM controller in the TI SN65DSI86 bridge
> chip to provide a signal for the backlight control and has TLMM GPIO 11
> attached to some regulator that drives the backlight.
>
> Unfortunately the regulator attached to this gpio is also powering the
> camera, so turning off backlight result in the detachment of the camera
> as well.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---
> arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
> index 58845a14805f..55fb7302245b 100644
> --- a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
> +++ b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
> @@ -59,6 +59,7 @@ mode {
> panel {
> compatible = "boe,nv133fhm-n61";
> no-hpd;
> + backlight = <&backlight>;
>
> ports {
> port {
> @@ -98,6 +99,12 @@ sn65dsi86_refclk: sn65dsi86-refclk {
>
> clock-frequency = <19200000>;
> };
> +
> + backlight: backlight {
> + compatible = "pwm-backlight";
> + pwms = <&sn65dsi86 1000000>;
> + enable-gpios = <&tlmm 11 GPIO_ACTIVE_HIGH>;
> + };
> };
>
> &adsp_pas {
> @@ -419,6 +426,7 @@ sn65dsi86: bridge@2c {
> clock-names = "refclk";
>
> no-hpd;
> + #pwm-cells = <1>;
>
> ports {
> #address-cells = <1>;
Tested-by: Steev Klimaszewski <steev@kali.org>

\
 
 \ /
  Last update: 2022-02-08 14:39    [W:0.547 / U:0.568 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site