linux-kernel - Re: [PATCH 2/2] video: fbdev: Enable Xilinx FB for ZynqMP

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Message-ID: <757d86d1-cca5-3a99-a371-a4c7e1c76f9b@xilinx.com>
Date:   Mon, 14 Aug 2017 15:46:00 +0200
From:   Michal Simek <michal.simek@...inx.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Michal Simek <michal.simek@...inx.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "monstr@...str.eu" <monstr@...str.eu>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Arnd Bergmann <arnd@...db.de>,
        "linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Paul Burton <paul.burton@...tec.com>
Subject: Re: [PATCH 2/2] video: fbdev: Enable Xilinx FB for ZynqMP

On 14.8.2017 15:42, Linus Walleij wrote:
> On Tue, Aug 8, 2017 at 10:10 AM, Michal Simek <michal.simek@...inx.com> wrote:
> 
>> Enable this driver for Xilinx ZynqMP.
>>
>> Signed-off-by: Michal Simek <michal.simek@...inx.com>
> 
> Not a comment on the patch per se, but I would advice you to look into
> migrating the Xilinx frame buffer to DRI/DRM/KMS.
> 
> The recent CMA helpers has made it very simple and focused to write
> DRM drivers. See for example drivers/gpu/drm/pl111

There is a lot of work done by xilinx in this area gpu/drm/kms. I am
trying to upstream what xilinx has in soc tree and this change is there.
Maybe in this case it is useless and none is using it but it is there
and I don't want to break user. There shouldn't be any technical problem
to run this old fb driver in pl on arm64.

Thanks,
Michal