From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B02BC31E4B for ; Fri, 14 Jun 2019 14:12:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 637A221721 for ; Fri, 14 Jun 2019 14:12:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728929AbfFNOME (ORCPT ); Fri, 14 Jun 2019 10:12:04 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:36245 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727123AbfFNOME (ORCPT ); Fri, 14 Jun 2019 10:12:04 -0400 Received: from lupine.hi.pengutronix.de ([2001:67c:670:100:3ad5:47ff:feaf:1a17] helo=lupine) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1hbmvz-00021E-3k; Fri, 14 Jun 2019 16:12:03 +0200 Message-ID: <1560521523.18257.3.camel@pengutronix.de> Subject: Re: [PATCH] gpu: ipu-v3: image-convert: Enable double write reduction From: Philipp Zabel To: Steve Longerbeam Cc: "open list:DRM DRIVERS FOR FREESCALE IMX" , open list Date: Fri, 14 Jun 2019 16:12:03 +0200 In-Reply-To: <20190614010255.13593-1-slongerbeam@gmail.com> References: <20190614010255.13593-1-slongerbeam@gmail.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.22.6-1+deb9u2 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 2001:67c:670:100:3ad5:47ff:feaf:1a17 X-SA-Exim-Mail-From: p.zabel@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2019-06-13 at 18:02 -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 (skip odd chroma rows). > This reduces necessary write memory bandwidth by at least 25% (more > with rotation enabled). > > Signed-off-by: Steve Longerbeam Applied on imx-drm/next, thanks! regards Philipp