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=-1.7 required=3.0 tests=DKIM_ADSP_ALL,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,USER_AGENT_NEOMUTT 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 A8016C43387 for ; Wed, 16 Jan 2019 07:59:37 +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 7758920840 for ; Wed, 16 Jan 2019 07:59:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="W18ykNeU"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=plaes.org header.i=@plaes.org header.b="IImQkfO4" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7758920840 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=plaes.org 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=cBD6DRuwC5Tt4vjKTxO3gxjcLzZTwEow7r9s86oZyD8=; b=W18ykNeU22JVAq 3eX8XRJyZc4pK4b7Bg6iuBOqyvTmNlPvBIMcA1NP8b2LhLatL5Tp+jAxuYV1QPjyjILougcCrTfb+ vjq2FtL/I7V2liEhCJG/jSPYFk+t6KRXpffMpilJqNspaXCicFAaFhBRZx0b6vGQuPmYUYCdz6ZqD 4MqaV1tFNHrl89WDBuR616edOaPbFsLHwG/KWAazZdV9R0Rc8SuoniLPugF3qLKrCZz7fp8yYmHBH y6SmBlhZuH2c0DNxnIYR82vdzACvWrsyVpuSEay5mZnv8hsXSv7UC5hf6PRnsCrRXsRUIieDz06w/ Ad1INtsKj8NqWZji2l2g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gjg6n-0007nr-4b; Wed, 16 Jan 2019 07:59:33 +0000 Received: from plaes.org ([188.166.43.21]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gjg6j-0007nR-Bx for linux-arm-kernel@lists.infradead.org; Wed, 16 Jan 2019 07:59:31 +0000 Received: from plaes.org (localhost [127.0.0.1]) by plaes.org (Postfix) with ESMTPSA id E1E0E4042D; Wed, 16 Jan 2019 07:58:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=plaes.org; s=mail; t=1547625535; bh=gmAgAhUX+s8x+bckN8RcCtKnRI60cxc9Uc7EsH4eRik=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=IImQkfO4fpGZzgOxmliZ32woI9BCrL9oPaLRHO4XAjorGbl5eMJ4uZLEB5m0C83sl u4SNNeH0txG6cOlR2+C+8g6FH/tU+WNzSK/4FzBbQBEa4sMOs7sSsJVZ036DHvROch XTL1hQsbxACTBwlNS0O+GKH7yEH/dU85ZpdWelVU1gJcuxAfANTB35MEM4E3dwszEb dL/l3hVRn3Jzp5ozaqQM0DeRHlwRuzlg6wKNDioWzB9eBvQ2oKa9fcRPA8JhO9IdBK 90MDi4VKW1l1p7u6OxvPwffQ2/D65oOcJwuwZYKHuyqUwSEInxe6DRS86kBc5diamX mgkxjbuY3oH5A== Date: Wed, 16 Jan 2019 07:58:54 +0000 From: Priit Laes To: Maxime Ripard Subject: Re: [linux-sunxi] Re: HDMI/DVI spurious failure Message-ID: <20190116075854.o2kme5nxq5kckwem@plaes.org> References: <20190114132934.rywqqtjarbf6fgcr@plaes.org> <20190115094951.e7jnjpibj5tcp5pz@flea> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190115094951.e7jnjpibj5tcp5pz@flea> User-Agent: NeoMutt/20170113 (1.7.2) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190115_235929_551755_8D359E46 X-CRM114-Status: GOOD ( 21.44 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, linux-sunxi@googlegroups.com, Chen-Yu Tsai , Jonathan Liu , dri-devel@lists.freedesktop.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 On Tue, Jan 15, 2019 at 10:49:51AM +0100, Maxime Ripard wrote: > Hi, > > (Sending those kind of bug reports to linux-sunxi doesn't really work, > you should Cc at least the ML involved in the development of the > driver at fault). OK, sorry for that. > > On Mon, Jan 14, 2019 at 01:29:34PM +0000, Priit Laes wrote: > > I have a somewhat curious case with one HDMI/DVI screen that fails > > to initialize properly every 6-7 boots. The display itself is also > > somewhat flawed (missing HPD pin and the VSYNC/HSYNC pulse width > > is set to 0 in EDID), but I suspect there could be some issues > > regarding timing in A20 HDMI driver in Linux. > > ... > It doesn't look related to the clock rate itself, since it doesn't > change between the two cases. However, in one case the DDC clock is > enabled and in the other it's disabled. > > Was it taken at the same time? Maybe you can try with that patch? > http://code.bulix.org/z7jmkm-555344?raw Thanks, after doing ~50+ boots I haven't seen a single failure. Previously I had following failure cases which are now both fixed: a) Linux without u-boot HDMI, where one in every 6-7 boots failed. b) u--boot with hdmi enabled switching to simplefb and then switching to kms, where previously all boots ended up with garbled screen. Priit :) > > Maxime > > -- > Maxime Ripard, Bootlin > Embedded Linux and Kernel engineering > https://bootlin.com > > -- > You received this message because you are subscribed to the Google Groups "linux-sunxi" group. > To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscribe@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel