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=-18.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 BA8A3C49EC8 for ; Mon, 14 Jun 2021 11:09:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A941C61283 for ; Mon, 14 Jun 2021 11:09:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234075AbhFNLLT (ORCPT ); Mon, 14 Jun 2021 07:11:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:36346 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235123AbhFNLAH (ORCPT ); Mon, 14 Jun 2021 07:00:07 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D0E6D613EF; Mon, 14 Jun 2021 10:42:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1623667361; bh=J7r/lrRoLtgpXhPKTHPUodPNJJKZXvNW2z4QxIPjKlA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hNTmbZyKlUsAZXNYqWcecNfbGFbpAwyZkeXLHoLvU6QMM43aBtoqc7IJpEDuriknZ gvYCMUhXBSKBJGsfRL1dvHWU+3+8dZd6Zt41eBI7JxkZRsJLC+oY8wV7bOTkH4X6EC Rb3I7ANctod50V2ZKOfndWPgUY+ekzz0IHG1fmlc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chris Packham , Michael Ellerman , Wolfram Sang , Sasha Levin Subject: [PATCH 5.10 039/131] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers Date: Mon, 14 Jun 2021 12:26:40 +0200 Message-Id: <20210614102654.341322801@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210614102652.964395392@linuxfoundation.org> References: <20210614102652.964395392@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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 872e4485dc3f..ddc018d42252 100644 --- a/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi @@ -371,7 +371,23 @@ }; /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