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=-12.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 1AA7DC43142 for ; Wed, 3 Mar 2021 19:28:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F0F3B64ED0 for ; Wed, 3 Mar 2021 19:28:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1579623AbhCCSbm (ORCPT ); Wed, 3 Mar 2021 13:31:42 -0500 Received: from mail.kernel.org ([198.145.29.99]:34124 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234377AbhCCMsT (ORCPT ); Wed, 3 Mar 2021 07:48:19 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1396364ED4; Wed, 3 Mar 2021 12:47:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1614775651; bh=nPhaVQlWGiOqRGSZBMc6cCnJ6Xmgmr0T0g4FiSqYVOw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=tHXZnWwYrnXPKcd0bqnAPH+IaD4ICiamWSwHWTyJX5g0G0PMaVm35cWNrSsLw7UrI H3sezHk9zAfc6BRNKGi8vrB7e+IrR0LurHXDNDX2MIyu5kFBifUU7raxel95aCVXM+ mN1VCZbKJSr2fmiy8DwHq9YeUl2+lz2Cf5i+oeedPlSO2NWMCGMHmPt32/FAm2XWcL IXbpdfRdc9cUBcvKEgm44543hoZux9+DZH8e/uCeGiZTlOgr+kn1xgjtq580GzSri0 k1NmFXcHtet9nz32zyZss14XbWO2+XqgZbyUb+iQBjatlCE2Q8Giul/TnS5O83cufX LrLu0fe15glEg== Date: Wed, 3 Mar 2021 20:47:25 +0800 From: Shawn Guo To: Dima Azarkin Cc: Rob Herring , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Christian Hewitt Subject: Re: [PATCH] ARM: dts: imx6qdl-wandboard: add scl/sda gpios definitions for i2c bus recovery Message-ID: <20210303124722.GF15865@dragon> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Sun, Jan 31, 2021 at 06:54:46PM +0300, 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 Applied, thanks.