From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Thu, 12 Dec 2024 10:06:57 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tLf9s-00783V-1t for lore@lore.pengutronix.de; Thu, 12 Dec 2024 10:06:57 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tLf9s-0000Mq-I6 for lore@pengutronix.de; Thu, 12 Dec 2024 10:06:57 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:Date:Message-Id:Subject:References:In-Reply-To:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=VJizNuDDaoyXVb+gvNgx5FKKPTRKzisILcTx6RY8brE=; b=SbG23CQJgAbLTMrLu7+ymuA1zv 8Y0BYctT2ZkelPlLHDs20UlWWWwbmMSzKxas36YZM1glvsuVU7jzMmKA/vreIx81satA7TyDLbQUv +3AoIryrZ21wTj5jLkCIngm30lHn9y/1+5hTu7lrzf0z723Ys4QbRsrzOnjwvURenDyomsCHN3jQn mSWAnRcTVdkh4sGr1cV06hhIhp21Qnw9ImGl2EKOobALTWpKwbkUeL0I12bkiokjtITqIGrIgew53 722n7fwFSTyWev8w99DZzfjSPpjzMOcTXEXtXkt2VoSehYbOZ3uDFp3i8w2v3Mcr885tNNbguzpKi D/TudiIg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tLf9U-0000000HQOi-1hnV; Thu, 12 Dec 2024 09:06:32 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tLf9S-0000000HQOJ-05Cp for barebox@lists.infradead.org; Thu, 12 Dec 2024 09:06:31 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tLf9Q-0000I7-Ix; Thu, 12 Dec 2024 10:06:28 +0100 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tLf9P-0030RE-22; Thu, 12 Dec 2024 10:06:28 +0100 Received: from localhost ([::1] helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1tLf9Q-00GG2Q-17; Thu, 12 Dec 2024 10:06:28 +0100 From: Sascha Hauer To: barebox@lists.infradead.org, =?utf-8?q?Sven_P=C3=BCschel?= Cc: Ahmad Fatoum In-Reply-To: <20241210080403.1235658-1-s.pueschel@pengutronix.de> References: <20241210080403.1235658-1-s.pueschel@pengutronix.de> Message-Id: <173399438834.3874400.15508538416864722773.b4-ty@pengutronix.de> Date: Thu, 12 Dec 2024 10:06:28 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-Mailer: b4 0.12.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241212_010630_054614_4D9B639A X-CRM114-Status: GOOD ( 11.16 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.3 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH] video: mipi_dbi: don't send image before initialization X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) On Tue, 10 Dec 2024 09:04:03 +0100, Sven Püschel wrote: > Don't send an image to the display before it is initialized, as it can > cause a broken image being stored in the display memory and being shown > while initializing. Instead just damage the image in the flush call but > avoid writing the actual image. > > This problem was experienced with a ILI9341 LCD driver and calling the > splash command before enabling the framebuffer. The splash command flushed > out the data, but given no initialization, they were misinterpreted. > After enabling the display, it displayed the broken image for a short time > before being updated. This caused a flickering effect for the viewer. > Switching the command ordering also fixes the problem, but sends an black > image before the actual splash image. > > [...] Applied, thanks! [1/1] video: mipi_dbi: don't send image before initialization https://git.pengutronix.de/cgit/barebox/commit/?id=a7ae043343c8 (link may not be stable) Best regards, -- Sascha Hauer