From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756915AbdJKLil (ORCPT ); Wed, 11 Oct 2017 07:38:41 -0400 Received: from smtprelay02.ispgateway.de ([80.67.31.29]:59260 "EHLO smtprelay02.ispgateway.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751147AbdJKLik (ORCPT ); Wed, 11 Oct 2017 07:38:40 -0400 From: =?UTF-8?q?Lothar=20Wa=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 Cc: =?UTF-8?q?Lothar=20Wa=C3=9Fmann?= 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 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Df-Sender: bHdAa2Fyby1lbGVjdHJvbmljcy5kZQ== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.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 -- 2.1.4