From patchwork Wed Mar 4 15:44:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marian-Cristian Rotariu X-Patchwork-Id: 11420311 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 34DA214B7 for ; Wed, 4 Mar 2020 15:44:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 184C321739 for ; Wed, 4 Mar 2020 15:44:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727656AbgCDPoO (ORCPT ); Wed, 4 Mar 2020 10:44:14 -0500 Received: from relmlor1.renesas.com ([210.160.252.171]:42611 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726561AbgCDPoO (ORCPT ); Wed, 4 Mar 2020 10:44:14 -0500 X-IronPort-AV: E=Sophos;i="5.70,514,1574089200"; d="scan'208";a="40971363" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 05 Mar 2020 00:44:12 +0900 Received: from marian-VirtualBox.ree.adwin.renesas.com (unknown [10.226.36.164]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id CFEAD400A6CD; Thu, 5 Mar 2020 00:44:10 +0900 (JST) From: Marian-Cristian Rotariu To: geert@linux-m68k.org Cc: linux-renesas-soc@vger.kernel.org, Chris Paterson , prabhakar.mahadev-lad.rj@bp.renesas.com, dmitry.torokhov@gmail.com, linux-input@vger.kernel.org, robh+dt@kernel.org, devicetree@vger.kernel.org Subject: [PATCH v2] ARM: dts: iwg22d-sodimm: Enable touchscreen Date: Wed, 4 Mar 2020 15:44:10 +0000 Message-Id: <1583336650-25848-1-git-send-email-marian-cristian.rotariu.rb@bp.renesas.com> X-Mailer: git-send-email 2.7.4 Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org In one of the iWave-G22D development board variants, called Generic SODIMM Development Platform, we have an LCD with touchscreen. The resistive touch controller, STMPE811 is on the development board and is connected through the i2c5 of the RZ-G1E. Additionally, this controller should generate an interrupt to the CPU and it is connected through GPIO4,4 to the GIC. Touch was tested with one of our iW-RainboW-G22D-SODIMM RZ/G1E development platforms. More details on the iWave website: https://www.iwavesystems.com/rz-g1e-sodimm-development-kit.html Changes from v1: -remove redundant GPIO code -remove obsolete and unused properties -sync property values with the comments & the bindings Signed-off-by: Marian-Cristian Rotariu Reviewed-by: Geert Uytterhoeven --- arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts | 33 +++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts b/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts index 872f8a6..ab38b39 100644 --- a/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts +++ b/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts @@ -172,6 +172,39 @@ status = "okay"; clock-frequency = <400000>; + stmpe811@44 { + compatible = "st,stmpe811"; + reg = <0x44>; + interrupt-parent = <&gpio4>; + interrupts = <4 IRQ_TYPE_LEVEL_LOW>; + + /* 3.25 MHz ADC clock speed */ + st,adc-freq = <1>; + /* ADC converstion time: 80 clocks */ + st,sample-time = <4>; + /* 12-bit ADC */ + st,mod-12b = <1>; + /* internal ADC reference */ + st,ref-sel = <0>; + + stmpe_touchscreen { + compatible = "st,stmpe-ts"; + /* 8 sample average control */ + st,ave-ctrl = <3>; + /* 7 length fractional part in z */ + st,fraction-z = <7>; + /* + * 50 mA typical 80 mA max touchscreen drivers + * current limit value + */ + st,i-drive = <1>; + /* 1 ms panel driver settling time */ + st,settling = <3>; + /* 5 ms touch detect interrupt delay */ + st,touch-det-delay = <5>; + }; + }; + sgtl5000: codec@a { compatible = "fsl,sgtl5000"; #sound-dai-cells = <0>;