Received: by 2002:a05:6a10:af89:0:0:0:0 with SMTP id iu9csp5280020pxb; Wed, 19 Jan 2022 15:09:25 -0800 (PST) X-Google-Smtp-Source: ABdhPJw7vxzP5MEaodXjqjX96ujqv8foYjyJSG/RYDUCJZcYBLW27ZhipLuGmtSl06ABvQICPwJY X-Received: by 2002:a63:b90e:: with SMTP id z14mr29165496pge.189.1642633764894; Wed, 19 Jan 2022 15:09:24 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1642633764; cv=none; d=google.com; s=arc-20160816; b=KpAftCoHmHFHTIr/jt497qrxRH8YW++Pte1EN4mb0Hjkzqn/PVRfFJyMMZYvhZNhtq CtfZHlYJiMH9ejzU6sDgRSMOZAOZzuLt5ImQ9LK0x10VZV10KtnEBHo/rBMnM8MWKuVr 4532qykDm02yT10fXWHlCAfFt32rSGYirRjzTujRTcGF8mJ4qLlxwUQr/QMMCrqRq8Hg CX3p9T5m6qPH2TmZTD1C1+dFKoffnPNqBfUqBUySO2U1oPL93fQkGdRipqQZogmEBUV0 o9PO0C1MThfmsCc34TwuO5im61iXhaBB8sR4axYVIKLn0sNQspxaOuxLdYAzCWYZ6pZh 8glg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:to:from; bh=Gt62jeXOZtYqnQHtKDpzFn8B5OqKeJeZmTeG0YnxwGo=; b=NR5e4sIcrzsDw3Kqed0tmmvw+ivulZBQ2ZxFco+vBxiQY4FNIx9cMprCuSlHbJoAat N8ih+QsndfaTUtsXqSen4CsqVWtiRsH03PC3hnqCrcWlfe2Qiu7QNmSRu/+0pKDO94mo rB92br6u26CTofmv11mzn2zgPbaTnW0oVwMmyF6fb2n3lLRaoaelFHaaZ/LkmE+cuPnV rfX2ccZgJB/c4BHDsyEG+QVr2nrZw7G48zijxCA48V5TgjURXYxRISlpCTZfazGjtPil WvhA8V6gqYePf3+U80z7YH5jKM48QgQW2xfgRAVWDO93cONhBtqgyOt4l83Lr1v2ecq8 +ikw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id m22si884975pls.581.2022.01.19.15.09.11; Wed, 19 Jan 2022 15:09:23 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344860AbiARIpJ (ORCPT + 99 others); Tue, 18 Jan 2022 03:45:09 -0500 Received: from twspam01.aspeedtech.com ([211.20.114.71]:48974 "EHLO twspam01.aspeedtech.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235174AbiARIpI (ORCPT ); Tue, 18 Jan 2022 03:45:08 -0500 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 20I8c8hV013910; Tue, 18 Jan 2022 16:38:08 +0800 (GMT-8) (envelope-from jammy_huang@aspeedtech.com) Received: from JammyHuang-PC.aspeed.com (192.168.2.115) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 18 Jan 2022 16:45:05 +0800 From: Jammy Huang To: , , , , , , , , Subject: [PATCH v3 0/2] Fix incorrect resolution detected Date: Tue, 18 Jan 2022 16:44:47 +0800 Message-ID: <20220118084449.5182-1-jammy_huang@aspeedtech.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [192.168.2.115] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 20I8c8hV013910 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series fixes incorrect resolution detected. We found this problem happened occasionally in the switch between bios and bootloader. Changes in v3: - In v2, we tried to increase the min-required-count of stable signal to avoid incorrect transient state in timing detection. But it is not working for all conditions. Thus, we go another way in v3. Use regs, which can represent the signal status, to decide if we needs to do detection again. Changes in v2: - Separate the patch into two patches Jammy Huang (2): media: aspeed: Add macro for the fields of the mode-detect registers video: aspeed: Fix unstable timing detection drivers/media/platform/aspeed-video.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) -- 2.25.1