linux-kernel - Re: [PATCH] arm64: dts: mt8183: Add pwm and backlight node

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Message-ID: <acb813d6-8643-5b9a-2ae1-bc03f2a37ffa@gmail.com>
Date:   Fri, 27 Nov 2020 12:20:36 +0100
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        linux-kernel@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH] arm64: dts: mt8183: Add pwm and backlight node



On 25/11/2020 11:24, Enric Balletbo i Serra wrote:
> Hi Hsin-Yi,
> 
> Thank you for your patch.
> 
> On 24/11/20 5:12, Hsin-Yi Wang wrote:
>> Add pwm to mt8183 and backlight to mt8183-kukui.
>>
>> Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>
>> ---
> 
> Picked the patch and checked that pwm for the backlight is working as expected
> on my Lenovo Ideapad Duet.
> 
> Tested-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
> 

Applied to v5.10-next/dts64

Thanks!

>>   .../arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 28 +++++++++++++++++++
>>   arch/arm64/boot/dts/mediatek/mt8183.dtsi      | 10 +++++++
>>   2 files changed, 38 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
>> index 85f7c33ba4461..bf2ad1294dd30 100644
>> --- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
>> +++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
>> @@ -19,6 +19,17 @@ chosen {
>>   		stdout-path = "serial0:115200n8";
>>   	};
>>   
>> +	backlight_lcd0: backlight_lcd0 {
>> +		compatible = "pwm-backlight";
>> +		pwms = <&pwm0 0 500000>;
>> +		power-supply = <&bl_pp5000>;
>> +		enable-gpios = <&pio 176 0>;
>> +		brightness-levels = <0 1023>;
>> +		num-interpolated-steps = <1023>;
>> +		default-brightness-level = <576>;
>> +		status = "okay";
>> +	};
>> +
>>   	memory@...00000 {
>>   		device_type = "memory";
>>   		reg = <0 0x40000000 0 0x80000000>;
>> @@ -536,6 +547,17 @@ pins_clk {
>>   		};
>>   	};
>>   
>> +	pwm0_pin_default: pwm0_pin_default {
>> +		pins1 {
>> +			pinmux = <PINMUX_GPIO176__FUNC_GPIO176>;
>> +			output-high;
>> +			bias-pull-up;
>> +		};
>> +		pins2 {
>> +			pinmux = <PINMUX_GPIO43__FUNC_DISP_PWM>;
>> +		};
>> +	};
>> +
>>   	scp_pins: scp {
>>   		pins_scp_uart {
>>   			pinmux = <PINMUX_GPIO110__FUNC_TP_URXD1_AO>,
>> @@ -670,6 +692,12 @@ pins_wifi_wakeup {
>>   	};
>>   };
>>   
>> +&pwm0 {
>> +	status = "okay";
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pwm0_pin_default>;
>> +};
>> +
>>   &scp {
>>   	status = "okay";
>>   	pinctrl-names = "default";
>> diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
>> index 08a914d3a6435..a974bad899365 100644
>> --- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
>> +++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
>> @@ -479,6 +479,16 @@ spi0: spi@...0a000 {
>>   			status = "disabled";
>>   		};
>>   
>> +		pwm0: pwm@...0e000 {
>> +			compatible = "mediatek,mt8183-disp-pwm";
>> +			reg = <0 0x1100e000 0 0x1000>;
>> +			interrupts = <GIC_SPI 128 IRQ_TYPE_LEVEL_LOW>;
>> +			#pwm-cells = <2>;
>> +			clocks = <&topckgen CLK_TOP_MUX_DISP_PWM>,
>> +					<&infracfg CLK_INFRA_DISP_PWM>;
>> +			clock-names = "main", "mm";
>> +		};
>> +
>>   		i2c3: i2c@...0f000 {
>>   			compatible = "mediatek,mt8183-i2c";
>>   			reg = <0 0x1100f000 0 0x1000>,
>>