linux-kernel - Re: [PATCH] media: imx: prpencvf: enable double write reduction

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Message-ID: <1500880868.2391.14.camel@pengutronix.de>
Date:   Mon, 24 Jul 2017 09:21:08 +0200
From:   Philipp Zabel <p.zabel@...gutronix.de>
To:     Steve Longerbeam <slongerbeam@...il.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org,
        Steve Longerbeam <steve_longerbeam@...tor.com>
Subject: Re: [PATCH] media: imx: prpencvf: enable double write reduction

On Sat, 2017-07-22 at 14:21 -0700, Steve Longerbeam wrote:
> For the write channels with 4:2:0 subsampled YUV formats, avoid chroma
> overdraw by only writing chroma for even lines. Reduces necessary write
> memory bandwidth by at least 25% (more with rotation enabled).
> 
> Signed-off-by: Steve Longerbeam <steve_longerbeam@...tor.com>

Acked-by: Philipp Zabel <p.zabel@...gutronix.de>

regards
Philipp