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Received: from smtprelay02.ispgateway.de ([80.67.31.25]) by merlin.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1e2Erz-0006qD-DZ for linux-arm-kernel@lists.infradead.org; Wed, 11 Oct 2017 11:08:14 +0000 Received: from [89.1.81.74] (helo=ipc1.ka-ro) by smtprelay02.ispgateway.de with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.89) (envelope-from ) id 1e2ErZ-0004NF-Uy; Wed, 11 Oct 2017 13:07:45 +0200 Received: from lothar by ipc1.ka-ro with local (Exim 4.84_2 #2 (Debian)) id 1e2ErZ-0007DI-IZ; Wed, 11 Oct 2017 13:07:45 +0200 From: =?utf-8?q?Lothar_Wa=C3=9Fmann?= To: Fabio Estevam , Mark Rutland , Rob Herring , Russell King , Sascha Hauer , Shawn Guo , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 6/7] ARM: dts: imx53-tx53: add support for I2C bus recovery Date: Wed, 11 Oct 2017 13:07:40 +0200 Message-Id: <1507720061-27666-7-git-send-email-LW@KARO-electronics.de> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1507720061-27666-1-git-send-email-LW@KARO-electronics.de> References: <1507720061-27666-1-git-send-email-LW@KARO-electronics.de> MIME-Version: 1.0 X-Df-Sender: bHdAa2Fyby1lbGVjdHJvbmljcy5kZQ== X-Spam-Note: CRM114 invocation failed X-Spam-Score: -2.6 (--) X-Spam-Report: SpamAssassin version 3.4.1 on merlin.infradead.org summary: Content analysis details: (-2.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [80.67.31.25 listed in list.dnswl.org] -0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [80.67.31.25 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?utf-8?q?Lothar_Wa=C3=9Fmann?= Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org The imx-i2c driver supports automatic bus recovery via the GPIO function of the I2C pins. Enable this functionality for the Ka-Ro electronics TX53 modules. Signed-off-by: Lothar Waßmann --- arch/arm/boot/dts/imx53-tx53-x13x.dts | 5 ++++- arch/arm/boot/dts/imx53-tx53.dtsi | 19 ++++++++++++++++++- 2 files changed, 22 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/imx53-tx53-x13x.dts b/arch/arm/boot/dts/imx53-tx53-x13x.dts index e21bc91..a87a10b 100644 --- a/arch/arm/boot/dts/imx53-tx53-x13x.dts +++ b/arch/arm/boot/dts/imx53-tx53-x13x.dts @@ -121,8 +121,11 @@ }; &i2c3 { - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c3>; + pinctrl-1 = <&pinctrl_i2c3_gpio>; + scl-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>; + sda-gpios = <&gpio3 28 GPIO_ACTIVE_HIGH>; status = "okay"; sgtl5000: codec@0a { diff --git a/arch/arm/boot/dts/imx53-tx53.dtsi b/arch/arm/boot/dts/imx53-tx53.dtsi index 33934e5..8e10c47 100644 --- a/arch/arm/boot/dts/imx53-tx53.dtsi +++ b/arch/arm/boot/dts/imx53-tx53.dtsi @@ -233,8 +233,11 @@ }; &i2c1 { - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c1>; + pinctrl-0 = <&pinctrl_i2c1_gpio>; + scl-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>; + sda-gpios = <&gpio3 28 GPIO_ACTIVE_HIGH>; clock-frequency = <400000>; status = "okay"; @@ -394,6 +397,13 @@ >; }; + pinctrl_i2c1_gpio: i2c1-gpiogrp { + fsl,pins = < + MX53_PAD_EIM_D21__GPIO3_21 0x400001e6 + MX53_PAD_EIM_D28__GPIO3_28 0x400001e6 + >; + }; + pinctrl_i2c3: i2c3grp { fsl,pins = < MX53_PAD_GPIO_3__I2C3_SCL 0x400001e4 @@ -401,6 +411,13 @@ >; }; + pinctrl_i2c3_gpio: i2c3-gpiogrp { + fsl,pins = < + MX53_PAD_GPIO_3__GPIO1_3 0x400001e6 + MX53_PAD_GPIO_6__GPIO1_6 0x400001e6 + >; + }; + pinctrl_nand: nandgrp { fsl,pins = < MX53_PAD_NANDF_WE_B__EMI_NANDF_WE_B 0x4