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

Philippe Fouquet
2017-04-20T07:23:41Z

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Hi

If you want I work with a Allwinner A20 (my board are derived from
OlinuXino-Micro-A20), and I will interest with LVDS function.

I use your patch but I have nothing to display on my screen.
You can see my work on
https://github.com/Philippe12/linux-sunxi/tree/sun7i-A20-lvds
My hardware is good, it word with u-boot and a older kernel 3.4.104

I use a dlc screen (dlc0700DDG-T-11) my fault is probably on simple-panel
information but I didn't seen were

If you can tell me some things to check.

Thank for your help
Best regards
Philippe FOUQUET

Le lundi 13 février 2017 17:46:48 UTC+1, Priit Laes a écrit :
>
> 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...-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org <javascript:>> 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 <pl...-q/aMd4JkU83YtjvyW6yDsg@public.gmane.org <javascript:>>
> > > > ---
> > > > 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@1c0c000 {
> > > > + 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 :)
>

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