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=-5.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT 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 89F60C31E50 for ; Sun, 16 Jun 2019 15:42:12 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5F9632063F for ; Sun, 16 Jun 2019 15:42:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="QzH6tKgZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5F9632063F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ucw.cz Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7eJmcJilbF8zltJzTYiJm3FpG8+FilzGy4eeda9ADVg=; b=QzH6tKgZZLNpZq NqUE0kBXsJVjiHkr8++bcCnnT38HpfJMc+EXuB5rK/ihKL5OW7saVpz/QXtoYg7RGMX64h1kn62+S t/oaFVRtMbU/ztKv2ovroTsCriRvnnx0EXwasRqGoDwWLNhl5SkfA/L+E/NAQ8nErnm4PNnYhjhuS 8pigvPQqctjmHZDz+S3VhveaCJFPlLBoVvc2dYHhvI0/y/7vwnwbME/X5KCY865rOgxkmHQwYe0mK clpimB3h4AUBX8W0v1qyw7bqR+B9mKKRNqDP3k7iOrjvAEpQ5OkCqgXCdigZ9a4OoxF9+V/+zfPhd zdxOkqrWJc5Pnnj6gSMQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hcXID-0003Yd-EU; Sun, 16 Jun 2019 15:42:05 +0000 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hcXI9-0003XQ-Ji; Sun, 16 Jun 2019 15:42:03 +0000 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id 82D3D801F5; Sun, 16 Jun 2019 17:41:43 +0200 (CEST) Date: Sun, 16 Jun 2019 17:41:43 +0200 From: Pavel Machek To: Matthias Kaehlcke Subject: Re: [PATCH] Revert "ARM: dts: rockchip: set PWM delay backlight settings for Minnie" Message-ID: <20190616154143.GA28583@atrey.karlin.mff.cuni.cz> References: <20190614224533.169881-1-mka@chromium.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190614224533.169881-1-mka@chromium.org> User-Agent: Mutt/1.5.21 (2010-09-15) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190616_084201_807740_FE8ED504 X-CRM114-Status: GOOD ( 11.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Heiko Stuebner , linux-kernel@vger.kernel.org, Douglas Anderson , linux-rockchip@lists.infradead.org, Rob Herring , Enric Balletbo i Serra , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi! > This reverts commit 288ceb85b505c19abe1895df068dda5ed20cf482. > > According to the commit message the AUO B101EAN01 panel on minnie > requires a PWM delay of 200 ms, however this is not what the > datasheet says. The datasheet mentions a *max* delay of 200 ms > for T2 ("delay from LCDVDD to black video generation") and T3 > ("delay from LCDVDD to HPD high"), which aren't related to the > PWM. The backlight power sequence does not specify min/max > constraints for T15 (time from PWM on to BL enable) or T16 > (time from BL disable to PWM off). > > Signed-off-by: Matthias Kaehlcke > --- > Enric, if you think I misinterpreted the datasheet please holler! Was this tested? Was previous patch tested? Does patch being reverted actually break anything? If so, cc stable? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel