From patchwork Tue Feb 6 22:29:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 10204231 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 B77E8601A1 for ; Tue, 6 Feb 2018 22:30:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9704728DCB for ; Tue, 6 Feb 2018 22:30:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 94C9A28E03; Tue, 6 Feb 2018 22:30:10 +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 BF3FF28DCB for ; Tue, 6 Feb 2018 22:30:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753578AbeBFWaE (ORCPT ); Tue, 6 Feb 2018 17:30:04 -0500 Received: from sauhun.de ([88.99.104.3]:40161 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753582AbeBFWaD (ORCPT ); Tue, 6 Feb 2018 17:30:03 -0500 Received: from localhost (p54B33329.dip0.t-ipconnect.de [84.179.51.41]) by pokefinder.org (Postfix) with ESMTPSA id DF0C72C6725; Tue, 6 Feb 2018 23:30:02 +0100 (CET) From: Wolfram Sang To: linux-renesas-soc@vger.kernel.org Cc: Simon Horman , Wolfram Sang , Simon Horman Subject: [PATCH v3 9/9] ARM: dts: gose: use demuxer for I2C4 Date: Tue, 6 Feb 2018 23:29:58 +0100 Message-Id: <20180206222958.18941-10-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180206222958.18941-1-wsa+renesas@sang-engineering.com> References: <20180206222958.18941-1-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, corrected board name in subject, fixed aliases, switched to named GPIOs, fixed pinmux for I2C4] Signed-off-by: Wolfram Sang --- arch/arm/boot/dts/r8a7793-gose.dts | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/arch/arm/boot/dts/r8a7793-gose.dts b/arch/arm/boot/dts/r8a7793-gose.dts index 2b330ef71f4c17..9ed6961f2d9a2c 100644 --- a/arch/arm/boot/dts/r8a7793-gose.dts +++ b/arch/arm/boot/dts/r8a7793-gose.dts @@ -49,7 +49,9 @@ serial0 = &scif0; serial1 = &scif1; i2c9 = &gpioi2c2; + i2c10 = &gpioi2c4; i2c11 = &i2chdmi; + i2c12 = &i2cexio4; }; chosen { @@ -309,6 +311,16 @@ i2c-gpio,delay-us = <5>; }; + gpioi2c4: i2c-10 { + #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>; + }; + /* * A fallback to GPIO is provided for I2C2. */ @@ -416,6 +428,18 @@ pagesize = <16>; }; }; + + /* + * I2C4 is routed to EXIO connector E, pins 37 (SCL) + 39 (SDA). + * A fallback to GPIO is provided. + */ + i2cexio4: i2c-12 { + compatible = "i2c-demux-pinctrl"; + i2c-parent = <&i2c4>, <&gpioi2c4>; + i2c-bus-name = "i2c-exio4"; + #address-cells = <1>; + #size-cells = <0>; + }; }; &du { @@ -454,6 +478,11 @@ function = "i2c2"; }; + i2c4_pins: i2c4 { + groups = "i2c4_c"; + function = "i2c4"; + }; + du_pins: du { groups = "du_rgb888", "du_sync", "du_disp", "du_clk_out_0"; function = "du"; @@ -692,6 +721,11 @@ }; }; +&i2c4 { + pinctrl-0 = <&i2c4_pins>; + pinctrl-names = "i2c-exio4"; +}; + &rcar_sound { pinctrl-0 = <&sound_pins &sound_clk_pins>; pinctrl-names = "default";