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[2620:137:e000::1:18]) by mx.google.com with ESMTPS id c22-20020a170902b69600b00153b7d70c76si23722pls.349.2022.03.17.13.04.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Mar 2022 13:04:59 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=nxp.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 47CE2126591; Thu, 17 Mar 2022 12:53:47 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237799AbiCQTCr (ORCPT + 99 others); Thu, 17 Mar 2022 15:02:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35976 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237781AbiCQTCn (ORCPT ); Thu, 17 Mar 2022 15:02:43 -0400 Received: from inva021.nxp.com (inva021.nxp.com [92.121.34.21]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 874AE1E7A7B; Thu, 17 Mar 2022 12:01:26 -0700 (PDT) Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 3CC5C202DA9; Thu, 17 Mar 2022 20:01:25 +0100 (CET) Received: from smtp.na-rdc02.nxp.com (usphx01srsp001v.us-phx01.nxp.com [134.27.49.11]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id F2C18202DB0; Thu, 17 Mar 2022 20:01:24 +0100 (CET) Received: from right.am.freescale.net (right.am.freescale.net [10.81.116.145]) by usphx01srsp001v.us-phx01.nxp.com (Postfix) with ESMTP id 71B3440576; Thu, 17 Mar 2022 12:01:23 -0700 (MST) From: Li Yang To: Shawn Guo , Li Yang , Rob Herring Cc: Biwen Li , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 5/6] arm64: dts: ls208xa-rdb: fix errata E-00013 Date: Thu, 17 Mar 2022 14:01:08 -0500 Message-Id: <20220317190109.3742-5-leoyang.li@nxp.com> X-Mailer: git-send-email 2.25.1.377.g2d2118b In-Reply-To: <20220317190109.3742-1-leoyang.li@nxp.com> References: <20220317190109.3742-1-leoyang.li@nxp.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Virus-Scanned: ClamAV using ClamSMTP X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RDNS_NONE, SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Biwen Li Specify a channel zero in idle state to avoid enterring tri-stated state for PCA9547. About E-00013: - Description: I2C1 and I2C3 buses are missing pull-up. - Impact: When the PCA954x device is tri-stated, the I2C bus will float. This makes the I2C bus and its associated downstream devices inaccessible. - Hardware fix: Populate resistors R189 and R190 for I2C1 and resistors R228 and R229 for I2C3. - Software fix: Remove the tri-state option from the PCA954x driver(PCA954x always on enable status, specify a channel zero in dts to fix the errata E-00013). Signed-off-by: Biwen Li Signed-off-by: Li Yang --- arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi index 4b71c4fcb35f..a752f06a2e74 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi @@ -49,6 +49,8 @@ pca9547@75 { reg = <0x75>; #address-cells = <1>; #size-cells = <0>; + idle-state = <0>; + i2c@1 { #address-cells = <1>; #size-cells = <0>; -- 2.25.1