From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 CED6BC433EF for ; Tue, 21 Sep 2021 06:45:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B427961157 for ; Tue, 21 Sep 2021 06:45:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229763AbhIUGrW (ORCPT ); Tue, 21 Sep 2021 02:47:22 -0400 Received: from esa.microchip.iphmx.com ([68.232.153.233]:55505 "EHLO esa.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229755AbhIUGrW (ORCPT ); Tue, 21 Sep 2021 02:47:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1632206754; x=1663742754; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=o6lZk7/5WF5P0l2QkPxsSgucPRrvLaW9ltnagGvs3Ts=; b=nOrxSakIOFUsFuj9YihH/ubI/+iH3KOaIEsflIWeJiervmsy4wMCflpj n6+8PweNtpMRxEeuOGVIVhOJ+IXqEyfpu6Gyq4xY6/nLu8ykEnvnEPTBH Kmqjc/XZPegTDLMkdC0d6g6UZ4lXz3FaUrBX92ucvK8Qd6Bk9wUOj+mKy 9ASl243UF/+ILfCiKOqbO2A3RvsR/D2Ek2/xicm8pUNGq3gunJ8oSYan/ Ibq3zGxDyyIaSfbewiYwu52HI5SuL8KIZuxi6xpBvHkgQsliMDW+Ary18 nk93z05mPaQx7K7tni4lMZjkwxDqju9Zlv3yLAH9FVbfOTscVDGX5bCIL w==; IronPort-SDR: DvFRNCRS0JnYcPmGrGwhRYqvK+jLwSSmsjpBF40qA+m9JSVloxHKzWsfa//4BL8rQ0d7H4DHrU ey8NVXketEc6YwcLVZUq04XY8Pmj+I2S2qtEz0yphYMJ8E/IJ6kNVJCRuPwONJIXUBblFQvFFS 6spEJ58exI5RFoJxjga6tobQUUKHb5Y7evTDJ4hDT70RlbCQzLvXAtzlLLdOuN77oqji3swl1n SDmDJdpUyue/fT0T1zTe1RK1y0ydvb3+d6riQwItU578LUvAbGInocKcsyboy4szKOmhrneAtY iaBvMqN68O8YqU4EUty9pzz+ X-IronPort-AV: E=Sophos;i="5.85,310,1624345200"; d="scan'208";a="144928458" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 20 Sep 2021 23:45:53 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.14; Mon, 20 Sep 2021 23:45:53 -0700 Received: from CHE-LT-I66125LX.amer.actel.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2176.14 via Frontend Transport; Mon, 20 Sep 2021 23:45:46 -0700 From: Durai Manickam KR To: , , , , , , , CC: Durai Manickam KR Subject: [PATCH] ARM: dts: at91-sama5d2_icp.dts: Added I2C bus recovery support Date: Tue, 21 Sep 2021 12:13:44 +0530 Message-ID: <20210921064344.889304-1-durai.manickamkr@microchip.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org SDA and SCL is configured as GPIO for I2C bus to recover during I2C bus malfunction. Signed-off-by: Durai Manickam KR --- arch/arm/boot/dts/at91-sama5d2_icp.dts | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/at91-sama5d2_icp.dts b/arch/arm/boot/dts/at91-sama5d2_icp.dts index e06b58724ca8..806eb1d911d7 100644 --- a/arch/arm/boot/dts/at91-sama5d2_icp.dts +++ b/arch/arm/boot/dts/at91-sama5d2_icp.dts @@ -307,8 +307,11 @@ regulator-state-mem { }; &i2c0 { /* mikrobus i2c */ - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_mikrobus_i2c>; + pinctrl-1 = <&pinctrl_i2c0_gpio>; + sda-gpios = <&pioA PIN_PD21 GPIO_ACTIVE_HIGH>; + scl-gpios = <&pioA PIN_PD22 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; i2c-digital-filter; i2c-digital-filter-width-ns = <35>; status = "okay"; @@ -316,8 +319,11 @@ &i2c0 { /* mikrobus i2c */ &i2c1 { dmas = <0>, <0>; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c1_default>; + pinctrl-1 = <&pinctrl_i2c1_gpio>; + sda-gpios = <&pioA PIN_PD19 GPIO_ACTIVE_HIGH>; + scl-gpios = <&pioA PIN_PD20 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; i2c-digital-filter; i2c-digital-filter-width-ns = <35>; status = "okay"; @@ -402,6 +408,12 @@ pinctrl_i2c1_default: i2c1_default { bias-disable; }; + pinctrl_i2c1_gpio: i2c1_gpio { + pinmux = , + ; + bias-disable; + }; + pinctrl_key_gpio_default: key_gpio_default { pinmux = ; bias-pull-up; @@ -463,6 +475,12 @@ pinctrl_mikrobus_i2c: mikrobus_i2c { bias-disable; }; + pinctrl_i2c0_gpio: i2c0_gpio { + pinmux = , + ; + bias-disable; + }; + pinctrl_mikrobus1_an: mikrobus1_an { pinmux = ; bias-disable; -- 2.25.1