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        Mon, 7 May 2018 11:56:17 -0400
From: Eric Anholt <eric@anholt.net>
To: Boris Brezillon <boris.brezillon@bootlin.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        dri-devel@lists.freedesktop.org
Cc: Boris Brezillon <boris.brezillon@bootlin.com>,
        stable@vger.kernel.org
Subject: Re: [PATCH] drm/vc4: Fix scaling of uni-planar formats
In-Reply-To: <20180507121303.5610-1-boris.brezillon@bootlin.com>
References: <20180507121303.5610-1-boris.brezillon@bootlin.com>
Date: Mon, 07 May 2018 08:56:14 -0700
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Boris Brezillon <boris.brezillon@bootlin.com> writes:

> When using uni-planar formats (like RGB), the scaling parameters are
> stored in plane 0, not plane 1.
>
> Fixes: fc04023fafec ("drm/vc4: Add support for YUV planes.")
> Cc: stable@vger.kernel.org
> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>

Reviewed-by: Eric Anholt <eric@anholt.net>

Looking at the other branch, did I get the scl0/scl1 backwards?  HVS
docs say for non-444 YCBCR: "In these cases Channel 0 performs Y/Alpha
scaling and Channel 1 performs CB/CR scaling and should be configured as
appropriate."

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