Messages in this thread | | | Date | Tue, 8 Feb 2022 06:35:08 -0600 | Subject | Re: [PATCH 1/2] arm64: dts: qcom: c630: Add backlight controller | From | Steev Klimaszewski <> |
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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>
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