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 4B32EC2B9F4 for ; Mon, 14 Jun 2021 10:36:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 36F086144C for ; Mon, 14 Jun 2021 10:36:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233331AbhFNKiM (ORCPT ); Mon, 14 Jun 2021 06:38:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:39898 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233038AbhFNKf0 (ORCPT ); Mon, 14 Jun 2021 06:35:26 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id F3913613D0; Mon, 14 Jun 2021 10:32:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1623666753; bh=Wxtvq9eHMKPN54ne+ZQrK/BlFetohqLhABaJbiMUsWE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T9EYzE+r6NremFJCxEDdlCR64bMA4pN8t5WTe0BOpicF5IN3pMhwhkB8omykRDU8l RH1mRxkmsYPwN5GuWmx+9ZSgqrAY1Jn8GRj4FyCATRd4xyVoxdYFrMtIJR5jORMGej oBRO4rnX6iyptBrEtle4jJQUCBuf25X6mN8rkcCg= 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 4.14 17/49] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers Date: Mon, 14 Jun 2021 12:27:10 +0200 Message-Id: <20210614102642.444409653@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210614102641.857724541@linuxfoundation.org> References: <20210614102641.857724541@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 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 @@ }; /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