From patchwork Thu Dec 14 22:30:56 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 10113377 X-Patchwork-Delegate: horms@verge.net.au Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 42717602B3 for ; Thu, 14 Dec 2017 22:31:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3583C29D66 for ; Thu, 14 Dec 2017 22:31:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2A33529D6A; Thu, 14 Dec 2017 22:31:10 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D0F8429D6C for ; Thu, 14 Dec 2017 22:31:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754080AbdLNWbJ (ORCPT ); Thu, 14 Dec 2017 17:31:09 -0500 Received: from sauhun.de ([88.99.104.3]:54468 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754064AbdLNWbH (ORCPT ); Thu, 14 Dec 2017 17:31:07 -0500 Received: from localhost (p54B3351E.dip0.t-ipconnect.de [84.179.53.30]) by pokefinder.org (Postfix) with ESMTPSA id A72092C62C0; Thu, 14 Dec 2017 23:31:06 +0100 (CET) From: Wolfram Sang To: linux-renesas-soc@vger.kernel.org Cc: Simon Horman , Magnus Damm , Wolfram Sang , Simon Horman Subject: [PATCH 4/9] ARM: dts: koelsch: use demuxer for I2C4 Date: Thu, 14 Dec 2017 23:30:56 +0100 Message-Id: <20171214223101.16450-5-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20171214223101.16450-1-wsa+renesas@sang-engineering.com> References: <20171214223101.16450-1-wsa+renesas@sang-engineering.com> Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Make it possible to fallback to GPIO for I2C4 on the EXIO-E connector. This is based on reference work for the I2C0 core of the lager/r8a7790 by Wolfram Sang. Signed-off-by: Simon Horman [wsa: rebased, fixed aliases, switched to named GPIOS] Signed-off-by: Wolfram Sang --- arch/arm/boot/dts/r8a7791-koelsch.dts | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts index 4b20db197de629..8319eff0190ecd 100644 --- a/arch/arm/boot/dts/r8a7791-koelsch.dts +++ b/arch/arm/boot/dts/r8a7791-koelsch.dts @@ -52,8 +52,10 @@ serial1 = &scif1; i2c9 = &gpioi2c1; i2c10 = &gpioi2c2; + i2c11 = &gpioi2c4; i2c12 = &i2cexio1; i2c13 = &i2chdmi; + i2c14 = &i2cexio4; }; chosen { @@ -329,6 +331,16 @@ i2c-gpio,delay-us = <5>; }; + gpioi2c4: i2c-11 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "i2c-gpio"; + status = "disabled"; + scl-gpios = <&gpio7 13 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + sda-gpios = <&gpio7 14 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + i2c-gpio,delay-us = <5>; + }; + /* * I2C1 is routed to EXIO connector B, pins 64 (SCL) + 66 (SDA). * A fallback to GPIO is provided. @@ -437,6 +449,18 @@ pagesize = <16>; }; }; + + /* + * I2C4 is routed to EXIO connector E, pins 37 (SCL) + 39 (SDA). + * A fallback to GPIO is provided. + */ + i2cexio4: i2c-14 { + compatible = "i2c-demux-pinctrl"; + i2c-parent = <&i2c4>, <&gpioi2c4>; + i2c-bus-name = "i2c-exio4"; + #address-cells = <1>; + #size-cells = <0>; + }; }; &du { @@ -480,6 +504,11 @@ function = "i2c2"; }; + i2c4_pins: i2c4 { + groups = "i2c4"; + function = "i2c4"; + }; + du_pins: du { groups = "du_rgb888", "du_sync", "du_disp", "du_clk_out_0"; function = "du"; @@ -735,6 +764,11 @@ clock-frequency = <100000>; }; +&i2c4 { + pinctrl-0 = <&i2c4_pins>; + pinctrl-names = "i2c-exio4"; +}; + &i2c6 { status = "okay"; clock-frequency = <100000>;