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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 43466C47096 for ; Thu, 3 Jun 2021 17:16:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F572613DC for ; Thu, 3 Jun 2021 17:16:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233342AbhFCRSB (ORCPT ); Thu, 3 Jun 2021 13:18:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:42506 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233291AbhFCROH (ORCPT ); Thu, 3 Jun 2021 13:14:07 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id DE3E261436; Thu, 3 Jun 2021 17:10:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622740250; bh=DlRPQKg57hZnvopmZek5Qh2qaefReJ5UVZdEQVMp8F8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=n99p4+0jA2EJYTVDb/IPHzc7bgwdBVcIn+VgYZfVRRs9d6BsG+R3P8oQp9JxvsErw ICoPDF4U545LQAAWq0FUmRhXJHg8MFJX41H67syO70U7+SmcxcAilCLDe+wQXXt8RC 0MR9529QDl1kN8uXmt1qdsxZgbgmZsU7aVZjQ7tK29m5Ua2C4Onsm0uG6S69D1iKfB 7q7aQXHkSdAdtuannJXPDBMuONNqprI2n52xssDpGTPCaG/zKsHbpibRywR9VpS7pU +gJrNHrDWy1MQPQb+Lji8DAziyg+V9xhipSX1xp8fDaaScgVcyE1ihBZvh3V021kVw HAf2vE7ZMScxw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Chris Packham , Michael Ellerman , Wolfram Sang , Sasha Levin , devicetree@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH AUTOSEL 4.14 17/18] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers Date: Thu, 3 Jun 2021 13:10:28 -0400 Message-Id: <20210603171029.3169669-17-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210603171029.3169669-1-sashal@kernel.org> References: <20210603171029.3169669-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chris Packham [ Upstream commit 7adc7b225cddcfd0f346d10144fd7a3d3d9f9ea7 ] The i2c controllers on the P2040/P2041 have an erratum where the documented scheme for i2c bus recovery will not work (A-004447). A different mechanism is needed which is documented in the P2040 Chip Errata Rev Q (latest available at the time of writing). Signed-off-by: Chris Packham Acked-by: Michael Ellerman Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- arch/powerpc/boot/dts/fsl/p2041si-post.dtsi | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi b/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi index 51e975d7631a..8921f17fca42 100644 --- a/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi @@ -389,7 +389,23 @@ sdhc@114000 { }; /include/ "qoriq-i2c-0.dtsi" + i2c@118000 { + fsl,i2c-erratum-a004447; + }; + + i2c@118100 { + fsl,i2c-erratum-a004447; + }; + /include/ "qoriq-i2c-1.dtsi" + i2c@119000 { + fsl,i2c-erratum-a004447; + }; + + i2c@119100 { + fsl,i2c-erratum-a004447; + }; + /include/ "qoriq-duart-0.dtsi" /include/ "qoriq-duart-1.dtsi" /include/ "qoriq-gpio-0.dtsi" -- 2.30.2