Re: [PATCH 0/5] R-Car DU: Add support for R8A7793 and R8A7794

From: Magnus Damm <magnus.damm@gmail.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
	Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
	SH-Linux <linux-sh@vger.kernel.org>,
	dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 0/5] R-Car DU: Add support for R8A7793 and R8A7794
Date: Fri, 17 Jul 2015 09:10:04 +0000	[thread overview]
Message-ID: <CANqRtoSeaBExag+z7_yeJKYg1R+HpvJR_+FMpV2wZqQ85H=YrQ@mail.gmail.com> (raw)
In-Reply-To: <2044648.OO6sEKHBOn@avalon>

Hi Laurent,

On Fri, Jul 17, 2015 at 6:06 PM, Laurent Pinchart
<laurent.pinchart@ideasonboard.com> wrote:
> Hi Morimoto-san,
>
> Thank you for your quick reply.
>
> On Friday 17 July 2015 09:03:32 Kuninori Morimoto wrote:
>> Hi Laurent, again
>>
>> >> This patch series adds support for the DU found in the R8A7793 and
>> >> R8A7794 SoCs. It mostly consists of DT bindings updates (1/5 and 2/5)
>> >> with a small driver change in 2/5 to support fixed RGB output routing.
>> >> Patches 4/5 and 5/5 then add DU nodes to the r8a7793.dtsi and
>> >> r8a7794.dtsi, with patch 3/5 adding support for the DU0 clock to
>> >> r8a7794.dtsi.
>> >>
>> >> I will enable DU support for the Gose and Alt board in a later step when
>> >> I'll have access to the schematics. I won't be able to test that due to
>> >> lack of hardware though.
>> >>
>> >> The R8A7794 datasheet documents as single DU clock named DU0, while the
>> >> DU section documents DU0 and DU1 channels. I don't know at this point
>> >> whether this is a datasheet mistake or if the DU0 clock drives both
>> >> channels. I've opted for the latter, but I'd appreciate a confirmation.
>> >
>> > I will check it. please wait
>>
>> According to HW team, MSTP page of datasheet seems wrong
>> Maybe you have already tried, but,
>> can you access to MSTPSR1 :: 27bit (for DU1)
>
> I would try if I had access to an Alt board :-)
>
> Magnus, do you have an Alt board I could access remotely ?

Not sure if it is hooked up right now, but I will make sure you can
get access sometime soon.

Cheers,

/ magnus