linux-kernel - Re: [PATCH] drm/vc4: Fix HDMI mode validation

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Message-ID: <20200326123212.q6fl23fnjg7o7yyp@gilmour.lan>
Date:   Thu, 26 Mar 2020 13:32:12 +0100
From:   Maxime Ripard <maxime@...no.tech>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
Cc:     Eric Anholt <eric@...olt.net>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        linux-rpi-kernel@...ts.infradead.org, f.fainelli@...il.com,
        Stefan Wahren <stefan.wahren@...e.com>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/vc4: Fix HDMI mode validation

On Thu, Mar 26, 2020 at 01:20:01PM +0100, Nicolas Saenz Julienne wrote:
> Current mode validation impedes setting up some video modes which should
> be supported otherwise. Namely 1920x1200@...z.
>
> Fix this by lowering the minimum HDMI state machine clock to pixel clock
> ratio allowed.
>
> Fixes: 32e823c63e90 ("drm/vc4: Reject HDMI modes with too high of clocks")
> Reported-by: Stefan Wahren <stefan.wahren@...e.com>
> Suggested-by: Dave Stevenson <dave.stevenson@...pberrypi.com>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>

Reviewed-by: Maxime Ripard <mripard@...nel.org>

Maxime

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