From patchwork Tue Feb 18 18:38:16 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ahmad Fatoum X-Patchwork-Id: 13980523 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 691EDC021AA for ; Tue, 18 Feb 2025 18:45:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=G7XavjMgpd4cbNnTMQ71GP+z5iUkDeJXy8uih3FGSIE=; b=BnCqCnWTcw9Ln5SKRUGWd9fk0e PIue3CZC1NxLZ0DP/rfJTvZJCROw/Y7o0XuhGXDA356joyZbM0Q5f8/EeAfBUDe/bUFNJ6cMTCiPu OT2722Mr8tVpMcspYi2tlIKhPIfKC5toVVkevj54YrK0P142Yv24zo8BX/aB/IYk5+kcA34ULMTyd AO9AbBLOxN519fvWQW2hUw1cEZO9ckKsbvbZw8XElDpAJEJwC9yTt2PhvRUXrTk6JB7G4qDREISS9 E4+BpqooLQkplRfhl1zkbwvtmugD6oqZ53Vji7YBech2BmpTxkAY+x8ZY2/T/wvqSqFI7gzPeByoC u2I9J64w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tkSaS-00000009Pas-0E2n; Tue, 18 Feb 2025 18:44:52 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tkSU4-00000009Nvy-1DZr for linux-arm-kernel@lists.infradead.org; Tue, 18 Feb 2025 18:38:18 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tkSU2-0000Gx-Ox; Tue, 18 Feb 2025 19:38:14 +0100 Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tkSU2-001dam-1L; Tue, 18 Feb 2025 19:38:14 +0100 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1tkSU2-00AL9G-14; Tue, 18 Feb 2025 19:38:14 +0100 From: Ahmad Fatoum Date: Tue, 18 Feb 2025 19:38:16 +0100 Subject: [PATCH v2 4/6] arm64: dts: imx8mp-skov: describe I2C bus recovery for all controllers MIME-Version: 1.0 Message-Id: <20250218-skov-imx8mp-new-boards-v2-4-4040379742ea@pengutronix.de> References: <20250218-skov-imx8mp-new-boards-v2-0-4040379742ea@pengutronix.de> In-Reply-To: <20250218-skov-imx8mp-new-boards-v2-0-4040379742ea@pengutronix.de> To: Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Fabio Estevam Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Ahmad Fatoum X-Mailer: b4 0.14.2 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: a.fatoum@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250218_103816_345035_C322DAAD X-CRM114-Status: GOOD ( 12.20 ) 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 I2C bus recovery can be used to recover when SCL/SDA are stuck low. To be able to use it, add the necessary GPIO and pinctrl entries. Signed-off-by: Ahmad Fatoum --- .../arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi | 48 ++++++++++++++++++++-- 1 file changed, 44 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi index b1dfd8eb7062ae5e736146458833a11c4d37eb7b..63742d88c3c69276f19c508779a3dbd572ed2c42 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi @@ -240,8 +240,11 @@ &flexcan2 { &i2c1 { clock-frequency = <100000>; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c1>; + pinctrl-1 = <&pinctrl_i2c1_gpio>; + scl-gpios = <&gpio5 14 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + sda-gpios = <&gpio5 15 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; status = "okay"; pmic@25 { @@ -332,14 +335,20 @@ reg_nvcc_sd2: LDO5 { }; &i2c2 { - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c2>; + pinctrl-1 = <&pinctrl_i2c2_gpio>; + scl-gpios = <&gpio5 16 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + sda-gpios = <&gpio5 17 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; }; &i2c3 { clock-frequency = <400000>; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c3>; + pinctrl-1 = <&pinctrl_i2c3_gpio>; + scl-gpios = <&gpio5 18 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + sda-gpios = <&gpio5 19 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; status = "okay"; i2c_rtc: rtc@51 { @@ -354,8 +363,11 @@ i2c_rtc: rtc@51 { &i2c4 { clock-frequency = <380000>; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c4>; + pinctrl-1 = <&pinctrl_i2c4_gpio>; + scl-gpios = <&gpio5 20 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + sda-gpios = <&gpio5 21 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; status = "okay"; switch: switch@5f { @@ -567,6 +579,13 @@ MX8MP_IOMUXC_I2C1_SDA__I2C1_SDA 0x400001c2 >; }; + pinctrl_i2c1_gpio: i2c1gpiogrp { + fsl,pins = < + MX8MP_IOMUXC_I2C1_SCL__GPIO5_IO14 0x400001c2 + MX8MP_IOMUXC_I2C1_SDA__GPIO5_IO15 0x400001c2 + >; + }; + pinctrl_i2c2: i2c2grp { fsl,pins = < MX8MP_IOMUXC_I2C2_SCL__I2C2_SCL 0x400001c2 @@ -574,6 +593,13 @@ MX8MP_IOMUXC_I2C2_SDA__I2C2_SDA 0x400001c2 >; }; + pinctrl_i2c2_gpio: i2c2gpiogrp { + fsl,pins = < + MX8MP_IOMUXC_I2C2_SCL__GPIO5_IO16 0x400001c2 + MX8MP_IOMUXC_I2C2_SDA__GPIO5_IO17 0x400001c2 + >; + }; + pinctrl_i2c3: i2c3grp { fsl,pins = < MX8MP_IOMUXC_I2C3_SCL__I2C3_SCL 0x400001c2 @@ -581,6 +607,13 @@ MX8MP_IOMUXC_I2C3_SDA__I2C3_SDA 0x400001c2 >; }; + pinctrl_i2c3_gpio: i2c3gpiogrp { + fsl,pins = < + MX8MP_IOMUXC_I2C3_SCL__GPIO5_IO18 0x400001c2 + MX8MP_IOMUXC_I2C3_SDA__GPIO5_IO19 0x400001c2 + >; + }; + pinctrl_i2c4: i2c4grp { fsl,pins = < MX8MP_IOMUXC_I2C4_SCL__I2C4_SCL 0x400001c3 @@ -588,6 +621,13 @@ MX8MP_IOMUXC_I2C4_SDA__I2C4_SDA 0x400001c3 >; }; + pinctrl_i2c4_gpio: i2c4gpiogrp { + fsl,pins = < + MX8MP_IOMUXC_I2C4_SCL__GPIO5_IO20 0x400001c3 + MX8MP_IOMUXC_I2C4_SDA__GPIO5_IO21 0x400001c3 + >; + }; + pinctrl_pmic: pmicirqgrp { fsl,pins = < MX8MP_IOMUXC_GPIO1_IO03__GPIO1_IO03 0x41