linux-kernel - Re: [PATCH] drm: tilcdc: reduce max

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Message-ID: <CAMpxmJVVG_s-BtR5c+P4YqbX8BbnmQR2yQHsBt70Qq0mmq_pXQ@mail.gmail.com>
Date:   Mon, 21 Nov 2016 18:29:51 +0100
From:   Bartosz Golaszewski <bgolaszewski@...libre.com>
To:     Jyri Sarha <jsarha@...com>
Cc:     Tomi Valkeinen <tomi.valkeinen@...com>,
        David Airlie <airlied@...ux.ie>,
        Kevin Hilman <khilman@...libre.com>,
        Michael Turquette <mturquette@...libre.com>,
        Sekhar Nori <nsekhar@...com>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-drm <dri-devel@...ts.freedesktop.org>,
        Peter Ujfalusi <peter.ujfalusi@...com>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] drm: tilcdc: reduce max_width for revision 1

2016-11-21 18:26 GMT+01:00 Jyri Sarha <jsarha@...com>:
> On 11/21/16 19:16, Bartosz Golaszewski wrote:
>> It has been determined that the highest resolution supported correctly
>> by LCDC rev1 is 800x600. Reduce the max_width value for rev1 to 800 in
>> crtc_max_width().
>>
>
> I don't think this is the right way to limit the supported video modes.
> There is technically there is no such limit, is there?
>
> If memory bandwidth is limiting the functionality of higher resolutions,
> you should use "max-bandwidth" tilcdc device-tree property [1].
>
> Cheers,
> Jyri
>

Will do, thanks.

Bartosz Golaszewski