linux-kernel - Re: [PATCH 1/3] dt-bindings: Add support for samsung s6e3ha2 edge panel binding

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Date:   Fri, 14 Apr 2017 09:33:35 +0200
From:   Andrzej Hajda <a.hajda@...sung.com>
To:     Hoegeun Kwon <hoegeun.kwon@...sung.com>, thierry.reding@...il.com,
        airlied@...ux.ie, robh+dt@...nel.org, mark.rutland@....com,
        catalin.marinas@....com, will.deacon@....com, kgene@...nel.org,
        krzk@...nel.org
Cc:     dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        javier@....samsung.com, andi.shyti@...sung.com
Subject: Re: [PATCH 1/3] dt-bindings: Add support for samsung s6e3ha2 edge
 panel binding

Hi Hoegeun,

On 14.04.2017 07:19, Hoegeun Kwon wrote:
> The Samsung s6e3ha2 edge is a 5.65" 1600x2560 AMOLED panel connected
> using MIPI-DSI interfaces.

As I wrote in discussion about s6e3ha2, there is no edge version of
s6e3ha2, it is just different panel: s6e3hf2, or more precisely IC driver.

[1]: https://lkml.org/lkml/2017/1/9/159

>
> Signed-off-by: Hoegeun Kwon <hoegeun.kwon@...sung.com>
> ---
>  .../bindings/display/panel/samsung,s6e3ha2-e.txt   | 28 ++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2-e.txt
>
> diff --git a/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2-e.txt b/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2-e.txt
> new file mode 100644
> index 0000000..09c65f6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2-e.txt
> @@ -0,0 +1,28 @@
> +Samsung S6E3HA2 5.65" 1600x2560 AMOLED panel
> +
> +Required properties:
> +  - compatible: "samsung,s6e3ha2-e"

I think "samsung,s6e3hf2" should be then used, I guess it could be even
simpler to just add new compatible string to samsung,s6e3ha2.txt binding
with some comments, as these panels are of the same family.

Regards
Andrzej

> +  - reg: the virtual channel number of a DSI peripheral
> +  - vdd3-supply: I/O voltage supply
> +  - vci-supply: voltage supply for analog circuits
> +  - reset-gpios: a GPIO spec for the reset pin (active low)
> +  - enable-gpios: a GPIO spec for the panel enable pin (active high)
> +
> +Optional properties:
> +  - te-gpios: a GPIO spec for the tearing effect synchronization signal
> +    gpio pin (active high)
> +
> +Example:
> +&dsi {
> +	...
> +
> +	panel@0 {
> +		compatible = "samsung,s6e3ha2-e";
> +		reg = <0>;
> +		vdd3-supply = <&ldo27_reg>;
> +		vci-supply = <&ldo28_reg>;
> +		reset-gpios = <&gpg0 0 GPIO_ACTIVE_LOW>;
> +		enable-gpios = <&gpf1 5 GPIO_ACTIVE_HIGH>;
> +		te-gpios = <&gpf1 3 GPIO_ACTIVE_HIGH>;
> +	};
> +};