From patchwork Mon Jul 19 14:53:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 12386119 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=-18.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 B2748C07E95 for ; Mon, 19 Jul 2021 15:50:20 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 78DAF61264 for ; Mon, 19 Jul 2021 15:50:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 78DAF61264 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=F05yWUZWwIkqVvOuEvQH+kD3h2FogLSCnyfIj+NS7WE=; b=i2fq0lvVBCzVA/ 1x6qcv61c2BCQNxWa1WqMPBwUJ+lDVKs+p+BxtSSSPN1Em9z++idDRFZtrVwERz38D0JAoIT+5KwW wxSbcRzFnNgliciecUbJkpgJ9aHcidU9lqgohyLuRZNBdmKgeDalXUDLSf2N8Apy3BDU3d7xoLahG Gb3Oh3cRpN3khOszriomKSkq7q3yCTMkvcQh1Lj5UiMyXubGi93TcLt0Du5+3MTOJ9QWSsedKcQRw FlNpS32aNJSrJe+1jm9TXeM0g6HvCqS/2PNc7DcE8Qkdi2CQxsafIu3KfsGzlj0UvtfEAF7Az5apk EtY/XL2/yilwSu6UYYWQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m5VVD-00ADZC-GY; Mon, 19 Jul 2021 15:48:21 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m5VSC-00AC7b-Bu for linux-arm-kernel@lists.infradead.org; Mon, 19 Jul 2021 15:45:13 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 59FD26120C; Mon, 19 Jul 2021 15:45:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626709511; bh=anal9yHebPa5IoKNg/tbj8YV+qU5hikgsIvhUo4OUO8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gqKW39baQ/vBtDVCjJRnIDXTiSVSWEPWOXJq+QNihd3wczIdH0R7aemGjdxdWFoqE S9/TiTGLb1S0ZJ/6GixdvdN6gDR7QOaWusBGn3u8v2ckmFZyDKs1M+pEPxvPSW82mX ewCliCMyGsOLst6B3Ywv+59xxQhuOkzNBKchj80w= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christoph Niedermaier , Shawn Guo , Fabio Estevam , Marek Vasut , NXP Linux Team , kernel@dh-electronics.com, Sasha Levin Subject: [PATCH 4.19 414/421] ARM: dts: imx6q-dhcom: Add gpios pinctrl for i2c bus recovery Date: Mon, 19 Jul 2021 16:53:45 +0200 Message-Id: <20210719145000.663724066@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210719144946.310399455@linuxfoundation.org> References: <20210719144946.310399455@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210719_084512_522488_B4C34A28 X-CRM114-Status: GOOD ( 12.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Christoph Niedermaier [ Upstream commit ddc873cd3c0af4faad6a00bffda21c3f775126dd ] The i2c bus can freeze at the end of transaction so the bus can no longer work. This scenario is improved by adding scl/sda gpios definitions to implement the i2c bus recovery mechanism. Fixes: 52c7a088badd ("ARM: dts: imx6q: Add support for the DHCOM iMX6 SoM and PDK2") Signed-off-by: Christoph Niedermaier Cc: Shawn Guo Cc: Fabio Estevam Cc: Marek Vasut Cc: NXP Linux Team Cc: kernel@dh-electronics.com To: linux-arm-kernel@lists.infradead.org Signed-off-by: Shawn Guo Signed-off-by: Sasha Levin --- arch/arm/boot/dts/imx6q-dhcom-som.dtsi | 36 +++++++++++++++++++++++--- 1 file changed, 33 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/imx6q-dhcom-som.dtsi b/arch/arm/boot/dts/imx6q-dhcom-som.dtsi index 6c08ef354a39..d5161c34a4b1 100644 --- a/arch/arm/boot/dts/imx6q-dhcom-som.dtsi +++ b/arch/arm/boot/dts/imx6q-dhcom-som.dtsi @@ -106,22 +106,31 @@ &i2c1 { clock-frequency = <100000>; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c1>; + pinctrl-1 = <&pinctrl_i2c1_gpio>; + scl-gpios = <&gpio3 21 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + sda-gpios = <&gpio3 28 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; status = "okay"; }; &i2c2 { clock-frequency = <100000>; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c2>; + pinctrl-1 = <&pinctrl_i2c2_gpio>; + scl-gpios = <&gpio4 12 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + sda-gpios = <&gpio4 13 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; status = "okay"; }; &i2c3 { clock-frequency = <100000>; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c3>; + pinctrl-1 = <&pinctrl_i2c3_gpio>; + scl-gpios = <&gpio1 3 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + sda-gpios = <&gpio1 6 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; status = "okay"; ltc3676: pmic@3c { @@ -287,6 +296,13 @@ >; }; + pinctrl_i2c1_gpio: i2c1-gpio-grp { + fsl,pins = < + MX6QDL_PAD_EIM_D21__GPIO3_IO21 0x4001b8b1 + MX6QDL_PAD_EIM_D28__GPIO3_IO28 0x4001b8b1 + >; + }; + pinctrl_i2c2: i2c2-grp { fsl,pins = < MX6QDL_PAD_KEY_COL3__I2C2_SCL 0x4001b8b1 @@ -294,6 +310,13 @@ >; }; + pinctrl_i2c2_gpio: i2c2-gpio-grp { + fsl,pins = < + MX6QDL_PAD_KEY_COL3__GPIO4_IO12 0x4001b8b1 + MX6QDL_PAD_KEY_ROW3__GPIO4_IO13 0x4001b8b1 + >; + }; + pinctrl_i2c3: i2c3-grp { fsl,pins = < MX6QDL_PAD_GPIO_3__I2C3_SCL 0x4001b8b1 @@ -301,6 +324,13 @@ >; }; + pinctrl_i2c3_gpio: i2c3-gpio-grp { + fsl,pins = < + MX6QDL_PAD_GPIO_3__GPIO1_IO03 0x4001b8b1 + MX6QDL_PAD_GPIO_6__GPIO1_IO06 0x4001b8b1 + >; + }; + pinctrl_pmic_hw300: pmic-hw300-grp { fsl,pins = < MX6QDL_PAD_EIM_A25__GPIO5_IO02 0x1B0B0