Received: by 2002:a25:ab43:0:0:0:0:0 with SMTP id u61csp1016396ybi; Fri, 14 Jun 2019 07:14:26 -0700 (PDT) X-Google-Smtp-Source: APXvYqyOlFFnf5XKTsojoRKlvwJX4cO1MO6jmbrfrVMtoj2Id8MLA87Mo7DiuacIlP/R+pzFa89L X-Received: by 2002:a62:8643:: with SMTP id x64mr64478915pfd.7.1560521666854; Fri, 14 Jun 2019 07:14:26 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1560521666; cv=none; d=google.com; s=arc-20160816; b=LH+QVbcL969YPF82TP6TMdDXbcHXV95OuF0YQG/N++S/wqc/wz17ka6e8iasW/GeTt XWtMkwn7qqoTnGJ+snLTA2Qj4lWZLpofqOmaYOtwWUOvqYqsgqhk4UfvINXWfoAeH6ak ocWkvck5wdwtZSuFJJxiGNqOduREwU0Ia7q+lNa64pewechfoTvwVKy3WKJui4+yewse milTfua4P3up6a2HkYbRrI8N086c8rRS49cfpIpDtlwwpFeTnx5y2DwEZRVBgBCiXeSV mAKsRqhXh80HNDIownX3wJRrOyX5WBl9pXfdh4cN6n63I3qtDLHIrndu8IhvfKaPP+gO R6Lg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:date:cc:to:from:subject:message-id; bh=7jaxQd74Voapjx2cpB5KTVEzccZJTjiDLYwxVOY9w7U=; b=sdg1OWJfMyiQTxVL3YsZAbW5FhvReyRArJH3FXoHYbT44LK3gvuLA9fHLnm8cPUkoD ddDsvRgNifswg8tLF05WBGIFRdpdKx7Qfp+o3eAlqIU3GYJUHzQA7Dw2BWiPE+YddBoK cbc1vl7NS+OXcMGYjwXlMfopPM+biinwAL1ihUE4J29IPmt9XS9jPR9rHXLVzQPPhpby rjJNXUifvByHOfgwQLk0CkUzfSLPf1Pto9lfEb413GQS0xyNG0HL10S0gCJYCbDSFY1W GCe85Bo78sbXwb5jo0b5qU6z4LbaynCfSOPADRU5URaI3Iu+WAQlFXZ7M0YtRTGLfS0D u13Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id n63si2390069pjb.36.2019.06.14.07.14.10; Fri, 14 Jun 2019 07:14:26 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728837AbfFNOME (ORCPT + 99 others); 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