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Date:   Fri, 14 Feb 2020 09:55:41 +0100
From:   Maxime Ripard <maxime@...no.tech>
To:     Andrey Lebedev <andrey.lebedev@...il.com>
Cc:     wens@...e.org, airlied@...ux.ie, daniel@...ll.ch,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com, Andrey Lebedev <andrey@...edev.lt>
Subject: Re: [PATCH v3 3/3] ARM: dts: sun7i: Add LVDS panel support on A20

On Thu, Feb 13, 2020 at 10:18:57PM +0200, Andrey Lebedev wrote:
> From: Andrey Lebedev <andrey@...edev.lt>
>
> Define pins for LVDS channels 0 and 1, configure reset line for tcon0 and
> provide sample LVDS panel, connected to tcon0.
>
> Signed-off-by: Andrey Lebedev <andrey@...edev.lt>
> ---
>  arch/arm/boot/dts/sun7i-a20.dtsi | 28 ++++++++++++++++++++++++++--
>  1 file changed, 26 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
> index 92b5be97085d..3b3c366a2bee 100644
> --- a/arch/arm/boot/dts/sun7i-a20.dtsi
> +++ b/arch/arm/boot/dts/sun7i-a20.dtsi
> @@ -47,6 +47,7 @@
>  #include <dt-bindings/dma/sun4i-a10.h>
>  #include <dt-bindings/clock/sun7i-a20-ccu.h>
>  #include <dt-bindings/reset/sun4i-a10-ccu.h>
> +#include <dt-bindings/pinctrl/sun4i-a10.h>
>
>  / {
>  	interrupt-parent = <&gic>;
> @@ -407,8 +408,8 @@
>  			compatible = "allwinner,sun7i-a20-tcon";
>  			reg = <0x01c0c000 0x1000>;
>  			interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
> -			resets = <&ccu RST_TCON0>;
> -			reset-names = "lcd";
> +			resets = <&ccu RST_TCON0>, <&ccu RST_LVDS>;
> +			reset-names = "lcd", "lvds";
>  			clocks = <&ccu CLK_AHB_LCD0>,
>  				 <&ccu CLK_TCON0_CH0>,
>  				 <&ccu CLK_TCON0_CH1>;
> @@ -444,6 +445,11 @@
>  					#size-cells = <0>;
>  					reg = <1>;
>
> +					tcon0_out_lvds: endpoint@0 {
> +						reg = <0>;
> +						allwinner,tcon-channel = <0>;
> +					};
> +
>  					tcon0_out_hdmi: endpoint@1 {
>  						reg = <1>;
>  						remote-endpoint = <&hdmi_in_tcon0>;
> @@ -1162,6 +1168,24 @@
>  				pins = "PI20", "PI21";
>  				function = "uart7";
>  			};
> +
> +			/omit-if-no-ref/
> +			lcd_lvds0_pins: lcd-lvds0-pins {

The nodes here should be ordered by alphabetical order

> +				pins =

I'm not sure why you need a new line here

> +					"PD0", "PD1", "PD2", "PD3", "PD4",
> +					"PD5", "PD6", "PD7", "PD8", "PD9";
> +				function = "lvds0";
> +				allwinner,drive = <SUN4I_PINCTRL_10_MA>;

And allwinner,drive is also deprecated and at its default value anyway

Maxime

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