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 3DAFAC49EA2 for ; Mon, 14 Jun 2021 10:31:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 261C0613DB for ; Mon, 14 Jun 2021 10:31:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233248AbhFNKdV (ORCPT ); Mon, 14 Jun 2021 06:33:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:38772 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232947AbhFNKb7 (ORCPT ); Mon, 14 Jun 2021 06:31:59 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1D5C661241; Mon, 14 Jun 2021 10:29:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1623666596; bh=06HxnxtIEZnzYB12uT+NogL52PJZi6xTPiWFgKmivTo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LdBXgEneflplKHJ5JS2MML1cwhWERsG0HxkPmBLqMOyTWavBNH9IF+Q0cncnOhE9e q7/Vg192VnEwdidpwdUrutSnWSCDF2HzmeLRV+Fhc5YJZXWLlIJqW2i6yIV/fzyLlj 9PR+x7IckqMM3Noa4IJHBom6F6IW983LzTOtJdSc= 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 4.4 16/34] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers Date: Mon, 14 Jun 2021 12:27:07 +0200 Message-Id: <20210614102642.115404491@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210614102641.582612289@linuxfoundation.org> References: <20210614102641.582612289@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 19ae697a1e4edf1d755b413e3aa38da65e2db23b ] The i2c controllers on the P1010 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 P1010 Chip Errata Rev L. Signed-off-by: Chris Packham Acked-by: Michael Ellerman Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- arch/powerpc/boot/dts/fsl/p1010si-post.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi b/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi index af12ead88c5f..404f570ebe23 100644 --- a/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/p1010si-post.dtsi @@ -122,7 +122,15 @@ }; /include/ "pq3-i2c-0.dtsi" + i2c@3000 { + fsl,i2c-erratum-a004447; + }; + /include/ "pq3-i2c-1.dtsi" + i2c@3100 { + fsl,i2c-erratum-a004447; + }; + /include/ "pq3-duart-0.dtsi" /include/ "pq3-espi-0.dtsi" spi0: spi@7000 { -- 2.30.2