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[23.128.96.18]) by mx.google.com with ESMTP id hp6si9506734ejc.532.2021.01.31.17.18.47; Sun, 31 Jan 2021 17:19:12 -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; dkim=pass header.i=@gmail.com header.s=20161025 header.b=T6KNUKeb; 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; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230424AbhBABQm (ORCPT + 99 others); Sun, 31 Jan 2021 20:16:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56228 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229656AbhBABQi (ORCPT ); Sun, 31 Jan 2021 20:16:38 -0500 Received: from mail-vk1-xa2a.google.com (mail-vk1-xa2a.google.com [IPv6:2607:f8b0:4864:20::a2a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7DD51C061573; Sun, 31 Jan 2021 17:15:58 -0800 (PST) Received: by mail-vk1-xa2a.google.com with SMTP id a6so3577647vkb.8; Sun, 31 Jan 2021 17:15:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=MXqi7RWg583NTT5f0rgbVSyToBhnJlq1eY84ZndpFyI=; b=T6KNUKebxfvEccYgPBK9Dpz6YVvEpYfR4gb4ZCRjrZiPUgX5VdF58tvsv1vu6rOK/S /X4OtoFXV22ZscnfCtX1ZFv4u0Q4zWGFuw/9h2B1W2CUxh1E7rsyMkjGsU6VYTFkmg/Z u/XTfYVADLpb6GSHSEnmqPg2jTfkVzAKDc607YC0mRZJXLCNUrMWClbV3B49FmmvihGy 0jW913aDUScV3KVUlpX+NGefBaqwKdIKNr1I4kbLApPyYt2jSM1/bnR+9n5ksUfvwCTq KOPiEDbbNte05M147qBj+J0UoPh34EPRNl94Ak+KYU54p37MLWtll4kAjfeRbr+bIVYz Y8RA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=MXqi7RWg583NTT5f0rgbVSyToBhnJlq1eY84ZndpFyI=; b=lXigYoCoyaMp0E5doOFn1ATQkdhqSY5wAY8fvhj6haTmDYWSwPEm28Z4JBt3I5jISZ 6JXUCpz3EzDQ+ZnftZmM5eNKDNq1BUtkqfmF+hLGkPo5Wt9LzKhqMPyHfMkBpx/jUEHB 1fKRFoKhKcHL6RLSkOW1RQYgVGsTlWMWRARFYZb5o6iD7psf0ebamxklTENajBDETvs4 FANsvrpt1neQO8S9rQ3GpwmY+70mT2B3U2FS92m29NBrCbI0Cp+7zwKrUcCNpErCM01M +P8P2L7qnR8TbmHGPqtHbkn619MVg0cqR+595KtTPtRMj1DRSsJyuB0gFhw91ELn/H8E uOkA== X-Gm-Message-State: AOAM530xzq7hf0cjd6nVd5kE0Z7NZ7/F2cgj/VJOtgVOayPkKYgQ+foG Gxh1w8QRfW8gCm7rVDaAW7CpjMZTTV0Csvg6JQhYABZH174= X-Received: by 2002:a1f:2651:: with SMTP id m78mr8157594vkm.18.1612142157635; Sun, 31 Jan 2021 17:15:57 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Fabio Estevam Date: Sun, 31 Jan 2021 22:15:46 -0300 Message-ID: Subject: Re: [PATCH] ARM: dts: imx6qdl-wandboard: add scl/sda gpios definitions for i2c bus recovery To: Dima Azarkin Cc: Rob Herring , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , NXP Linux Team , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" , linux-kernel , Christian Hewitt Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Jan 31, 2021 at 12:55 PM Dima Azarkin wrote: > > The i2c bus on imx6qdl-wandboard has intermittent issues where SDA can freeze > on low level at the end of transaction so the bus can no longer work. This > impacts reading of EDID data leading to incorrect TV resolution and no audio. > > This scenario is improved by adding scl/sda gpios definitions to implement the > i2c bus recovery mechanism. > > Signed-off-by: Dima Azarkin Reviewed-by: Fabio Estevam