linux-kernel - Re: [PATCH 2/8] ARM: sun4i: Add display blocks for the sun4i dtsi.

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Message-ID: <CAGb2v648uAKxpYaU_qhTLAyfe5snW1LG1VWmm+UMLRSQ5a7DKg@mail.gmail.com>
Date:   Mon, 13 Feb 2017 17:20:56 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:     Priit Laes <plaes@...es.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        devicetree <devicetree@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Jonathan Liu <net147@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Chen-Yu Tsai <wens@...e.org>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Quentin Schulz <quentin.schulz@...e-electrons.com>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [PATCH 2/8] ARM: sun4i: Add display blocks for the sun4i dtsi.

On Mon, Feb 13, 2017 at 5:16 PM, Maxime Ripard
<maxime.ripard@...e-electrons.com> wrote:
> Hi,
>
> On Sat, Feb 11, 2017 at 07:43:59PM +0200, Priit Laes wrote:
>> Added basic display pipeline consisting of tcon, display backend and
>> frontend blocks.
>>
>> Signed-off-by: Priit Laes <plaes@...es.org>
>> ---
>>  arch/arm/boot/dts/sun4i-a10.dtsi | 104 +++++++++++++++++++++++++++++++++++++++
>>  1 file changed, 104 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi
>> index ba20b48..70991c9 100644
>> --- a/arch/arm/boot/dts/sun4i-a10.dtsi
>> +++ b/arch/arm/boot/dts/sun4i-a10.dtsi
>> @@ -779,6 +779,45 @@
>>                       #size-cells = <0>;
>>               };
>>
>> +             tcon0: lcd-controller@...c000 {
>> +                     compatible = "allwinner,sun5i-a13-tcon";
>
> There's a few bits here and there that need to be setup differently in
> A10, so you cannot reuse that compatible (same thing for the other).
>
> Also, I'd really like to have all the blocks listed here, and not only
> the first pipeline. Ideally, on the A10, the two pipelines should be
> enabled too.

The display pipeline driver has to be fixed before that can happen
though. And I haven't started to work on what I proposed yet. Though
if someone wants to take over I can forward any design plans I have.

ChenYu

>
> Maxime
>
> --
> Maxime Ripard, Free Electrons
> Embedded Linux and Kernel engineering
> http://free-electrons.com