From patchwork Mon Aug 8 19:43:13 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 9269607 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 092866075A for ; Mon, 8 Aug 2016 19:45:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EDF2820009 for ; Mon, 8 Aug 2016 19:45:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E2F5527AB2; Mon, 8 Aug 2016 19:45:42 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id A26C820009 for ; Mon, 8 Aug 2016 19:45:42 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bWqTC-0005Pi-DD; Mon, 08 Aug 2016 19:44:18 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bWqSe-0005Gl-VP for linux-arm-kernel@lists.infradead.org; Mon, 08 Aug 2016 19:43:45 +0000 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4C8898111C; Mon, 8 Aug 2016 19:43:28 +0000 (UTC) Received: from shalem.localdomain.com (vpn1-7-57.ams2.redhat.com [10.36.7.57]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u78JhKCp017837; Mon, 8 Aug 2016 15:43:25 -0400 From: Hans de Goede To: Chen-Yu Tsai , Maxime Ripard Subject: [PATCH 3/8] ARM: dts: sun8i: reference-design-tablet: Add gsl1680 touchscreen node Date: Mon, 8 Aug 2016 21:43:13 +0200 Message-Id: <1470685398-14568-3-git-send-email-hdegoede@redhat.com> In-Reply-To: <1470685398-14568-1-git-send-email-hdegoede@redhat.com> References: <1470685398-14568-1-git-send-email-hdegoede@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Mon, 08 Aug 2016 19:43:28 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160808_124345_148985_0FAC0461 X-CRM114-Status: GOOD ( 11.64 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree , linux-arm-kernel@lists.infradead.org, Hans de Goede MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Almost all sun8i tablets use a gsl1680 touchscreen controller, so add a node describing it to reference-design-tablet.dtsi. Almost all, but not all, so mark it as disabled by default (dts files will also need to supply a firmware-name and resolution info). Signed-off-by: Hans de Goede Acked-by: Chen-Yu Tsai --- .../boot/dts/sun8i-reference-design-tablet.dtsi | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/arch/arm/boot/dts/sun8i-reference-design-tablet.dtsi b/arch/arm/boot/dts/sun8i-reference-design-tablet.dtsi index 9d90361..f29897c 100644 --- a/arch/arm/boot/dts/sun8i-reference-design-tablet.dtsi +++ b/arch/arm/boot/dts/sun8i-reference-design-tablet.dtsi @@ -63,6 +63,27 @@ }; }; +&i2c0 { + /* + * The gsl1680 is rated at 400KHz and it will not work reliable at + * 100KHz, this has been confirmed on multiple different q8 tablets. + * The gsl1680 is the only device on this bus. + */ + clock-frequency = <400000>; + + gsl1680: touchscreen@40 { + compatible = "silead,gsl1680"; + reg = <0x40>; + interrupt-parent = <&pio>; + interrupts = <1 5 IRQ_TYPE_EDGE_FALLING>; /* PB5 */ + pinctrl-names = "default"; + pinctrl-0 = <&ts_power_pin>; + power-gpios = <&pio 7 1 GPIO_ACTIVE_HIGH>; /* PH1 */ + /* Most tablets use this touchscreen, but not all */ + status = "disabled"; + }; +}; + &mmc0 { pinctrl-names = "default"; pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin>; @@ -88,6 +109,13 @@ allwinner,pull = ; }; + ts_power_pin: ts_power_pin@0 { + allwinner,pins = "PH1"; + allwinner,function = "gpio_out"; + allwinner,drive = ; + allwinner,pull = ; + }; + usb0_id_detect_pin: usb0_id_detect_pin@0 { allwinner,pins = "PH8"; allwinner,function = "gpio_in";