[PATCH 2/2] ARM: tegra: Move panels to AUX bus

[Dmitry Osipenko]

22.12.2021 22:30, Dmitry Osipenko пишет:
> 20.12.2021 13:48, Thierry Reding пишет:
>> From: Thierry Reding <treding at nvidia.com>
>>
>> Move the eDP panel on Venice 2 and Nyan boards into the corresponding
>> AUX bus device tree node. This allows us to avoid a nasty circular
>> dependency that would otherwise be created between the DPAUX and panel
>> nodes via the DDC/I2C phandle.
>>
>> Signed-off-by: Thierry Reding <treding at nvidia.com>
>> ---
>>  arch/arm/boot/dts/tegra124-nyan-big.dts   | 15 +++++++++------
>>  arch/arm/boot/dts/tegra124-nyan-blaze.dts | 15 +++++++++------
>>  arch/arm/boot/dts/tegra124-venice2.dts    | 14 +++++++-------
>>  3 files changed, 25 insertions(+), 19 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/tegra124-nyan-big.dts b/arch/arm/boot/dts/tegra124-nyan-big.dts
>> index 1d2aac2cb6d0..fdc1d64dfff9 100644
>> --- a/arch/arm/boot/dts/tegra124-nyan-big.dts
>> +++ b/arch/arm/boot/dts/tegra124-nyan-big.dts
>> @@ -13,12 +13,15 @@ / {
>>  		     "google,nyan-big-rev1", "google,nyan-big-rev0",
>>  		     "google,nyan-big", "google,nyan", "nvidia,tegra124";
>>  
>> -	panel: panel {
>> -		compatible = "auo,b133xtn01";
>> -
>> -		power-supply = <&vdd_3v3_panel>;
>> -		backlight = <&backlight>;
>> -		ddc-i2c-bus = <&dpaux>;
>> +	host1x at 50000000 {
>> +		dpaux at 545c0000 {
>> +			aux-bus {
>> +				panel: panel {
>> +					compatible = "auo,b133xtn01";
>> +					backlight = <&backlight>;
>> +				};
>> +			};
>> +		};
>>  	};
>>  
>>  	mmc at 700b0400 { /* SD Card on this bus */
>> diff --git a/arch/arm/boot/dts/tegra124-nyan-blaze.dts b/arch/arm/boot/dts/tegra124-nyan-blaze.dts
>> index 677babde6460..abdf4456826f 100644
>> --- a/arch/arm/boot/dts/tegra124-nyan-blaze.dts
>> +++ b/arch/arm/boot/dts/tegra124-nyan-blaze.dts
>> @@ -15,12 +15,15 @@ / {
>>  		     "google,nyan-blaze-rev0", "google,nyan-blaze",
>>  		     "google,nyan", "nvidia,tegra124";
>>  
>> -	panel: panel {
>> -		compatible = "samsung,ltn140at29-301";
>> -
>> -		power-supply = <&vdd_3v3_panel>;
>> -		backlight = <&backlight>;
>> -		ddc-i2c-bus = <&dpaux>;
>> +	host1x at 50000000 {
>> +		dpaux at 545c0000 {
>> +			aux-bus {
>> +				panel: panel {
>> +					compatible = "samsung,ltn140at29-301";
>> +					backlight = <&backlight>;
>> +				};
>> +			};
>> +		};
>>  	};
>>  
>>  	sound {
>> diff --git a/arch/arm/boot/dts/tegra124-venice2.dts b/arch/arm/boot/dts/tegra124-venice2.dts
>> index 232c90604df9..6a9592ceb5f2 100644
>> --- a/arch/arm/boot/dts/tegra124-venice2.dts
>> +++ b/arch/arm/boot/dts/tegra124-venice2.dts
>> @@ -48,6 +48,13 @@ sor at 54540000 {
>>  		dpaux at 545c0000 {
>>  			vdd-supply = <&vdd_3v3_panel>;
>>  			status = "okay";
>> +
>> +			aux-bus {
>> +				panel: panel {
>> +					compatible = "lg,lp129qe";
>> +					backlight = <&backlight>;
>> +				};
>> +			};
>>  		};
>>  	};
>>  
>> @@ -1080,13 +1087,6 @@ power {
>>  		};
>>  	};
>>  
>> -	panel: panel {
>> -		compatible = "lg,lp129qe";
>> -		power-supply = <&vdd_3v3_panel>;
>> -		backlight = <&backlight>;
>> -		ddc-i2c-bus = <&dpaux>;
>> -	};
>> -
>>  	vdd_mux: regulator-mux {
>>  		compatible = "regulator-fixed";
>>  		regulator-name = "+VDD_MUX";
>>
> 
> You should add stable tag for 5.15 and also add separate patch to update
> the new arch/arm/boot/dts/tegra124-nyan-big-fhd.dts which we have in
> -next now.

Thierry, are you going to address this review comment? I see in
linux-next that you picked up this incomplete version of the patch.