linux-kernel - Re: [PATCH v2 0/8] Add Allwinner H6 Mali Midgard GPU

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Date:   Thu, 11 Apr 2019 17:09:20 +0200
From:   Clément Péron <peron.clem@...il.com>
To:     Jernej Škrabec <jernej.skrabec@...l.net>
Cc:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Clément Péron <peron.clem@...il.com>,
        Rob Herring <robh+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Icenowy Zheng <icenowy@...c.io>,
        Jagan Teki <jagan@...rulasolutions.com>,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        dri-devel@...ts.freedesktop.org, linux-sunxi@...glegroups.com
Subject: Re: [PATCH v2 0/8] Add Allwinner H6 Mali Midgard GPU

Hi,

On Thu, 11 Apr 2019 at 17:01, Jernej Škrabec <jernej.skrabec@...l.net> wrote:
>
> Hi!
>
> Dne četrtek, 11. april 2019 ob 14:32:23 CEST je Maxime Ripard napisal(a):
> > On Thu, Apr 11, 2019 at 12:57:12PM +0200, Clément Péron wrote:
> > > Hi,
> > >
> > > The Allwinner H6 has a Mali-T720 MP2. The drivers are
> > > out-of-tree so this series only introduce the dt-bindings.
> > >
> > > The first patch is from Neil Amstrong and has been already
> > > merged in linux-amlogic. It is required for this series.
> > >
> > > The second patch is from Icenowy Zheng where I changed the
> > > order has required by Rob Herring.
> > > See: https://patchwork.kernel.org/patch/10699829/
> > >
> > > The GPU opp table was taken from Jernej Škrabec's patch
> > > on LibreELEC.tv.
> >
> > One valuable information here would be which stack did you use,
> > panfrost and mesa or the ARM stack? If so, with which driver and which
> > blob?
All of this work has be done by Jernej so he could answer better than me.

He uses the ARM stack r22p0-01rel0 + patches
https://github.com/LibreELEC/LibreELEC.tv/commit/5273f889964c42e88fe02289290c3c6cb6086770

Blob are also from Jernej too (taken from ???) :
https://github.com/jernejsk/H6-mali-userspace

Regards,
Clement

>
> I'm using similar binding (different clock and interrupt names, but otherwise
> same) for quiet some time now on LibreELEC with ARM proprietary userspace and
> kernel space driver (32-bit GBM version) and it works well.
>
> It's true that I'm using OPP table, but most (if not all) of the time GPU is
> set to lowest setting as there is not much to do when rendering GUI.
>
> Best regards,
> Jernej
>
>