linux-kernel - Re: [PATCH 06/17] dt-bindings: display: sun4i-drm: Add R40 TV TCON description

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Date:   Tue, 10 Jul 2018 23:26:39 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Jernej Skrabec <jernej.skrabec@...l.net>
Cc:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Mark Rutland <mark.rutland@....com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [PATCH 06/17] dt-bindings: display: sun4i-drm: Add R40 TV TCON description

On Sat, Jul 7, 2018 at 1:51 AM, Jernej Skrabec <jernej.skrabec@...l.net> wrote:
> TCON description is expanded with R40 TV TCON compatible. It is a bit
> special, because it is connected to TCON TOP instead directly to mixer
> and it needs special handling.
>
> Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>

Reviewed-by: Chen-Yu Tsai <wens@...e.org>

> ---
>  Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
> index 288b4cbc255e..7e2451396a28 100644
> --- a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
> +++ b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
> @@ -147,6 +147,7 @@ Required properties:
>     * allwinner,sun8i-a33-tcon
>     * allwinner,sun8i-a83t-tcon-lcd
>     * allwinner,sun8i-a83t-tcon-tv
> +   * allwinner,sun8i-r40-tcon-tv
>     * allwinner,sun8i-v3s-tcon
>     * allwinner,sun9i-a80-tcon-lcd
>     * allwinner,sun9i-a80-tcon-tv
> @@ -181,7 +182,7 @@ For TCONs with channel 0, there is one more clock required:
>  For TCONs with channel 1, there is one more clock required:
>     - 'tcon-ch1': The clock driving the TCON channel 1
>
> -When TCON support LVDS (all TCONs except TV TCON on A83T and those found
> +When TCON support LVDS (all TCONs except TV TCONs on A83T, R40 and those found
>  in A13, H3, H5 and V3s SoCs), you need one more reset line:

I think this line is getting more convoluted as we add more exceptions.
We may want to reword it somehow.

>     - 'lvds': The reset line driving the LVDS logic
>
> --
> 2.18.0
>