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

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Date:   Mon, 13 Feb 2017 18:46:45 +0200
From:   Priit Laes <plaes@...es.org>
To:     wens@...e.org, Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:     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>,
        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: [linux-sunxi] Re: [PATCH 2/8] ARM: sun4i: Add display blocks
 for the sun4i dtsi.

On Mon, 2017-02-13 at 17:20 +0800, Chen-Yu Tsai wrote:
> 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.

Well, my plan was to get at least minimum bits mainlined and then build
additional features on top.

Wens, it would be cool though, if you could share your plans.

Unfortunately I have only single A10 device (with LVDS and mini-HDMI)
but I don't actually have other LVDS-displays I could easily use with
A20 devices (I have CubieTruck and A20-Olinuxino Micro).

Päikest,
Priit :)