From patchwork Thu Jun 6 13:52:39 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 2680931 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 1945CDF23A for ; Thu, 6 Jun 2013 13:53:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753051Ab3FFNxK (ORCPT ); Thu, 6 Jun 2013 09:53:10 -0400 Received: from www.linutronix.de ([62.245.132.108]:40958 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752141Ab3FFNxJ (ORCPT ); Thu, 6 Jun 2013 09:53:09 -0400 Received: from localhost ([127.0.0.1] helo=localhost.localdomain) by Galois.linutronix.de with esmtp (Exim 4.72) (envelope-from ) id 1Ukacl-0005qF-EJ; Thu, 06 Jun 2013 15:53:07 +0200 From: Sebastian Andrzej Siewior To: Paul Walmsley Cc: Tony Lindgren , linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, Felipe Balbi , Philip Avinash , Sebastian Andrzej Siewior Subject: [PATCH 4/4] ARM: dts: AM33XX: Add PWM backlight DT data to am335x-evmsk Date: Thu, 6 Jun 2013 15:52:39 +0200 Message-Id: <1370526759-31163-5-git-send-email-bigeasy@linutronix.de> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1370526759-31163-1-git-send-email-bigeasy@linutronix.de> References: <1370526759-31163-1-git-send-email-bigeasy@linutronix.de> X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1, SHORTCIRCUIT=-0.0001 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org From: Philip Avinash PWM output from ecap2 uses as backlight source. Also adds low threshold value to have a uniform divisions in brightness-levels scales with inverse polarity. Signed-off-by: Philip Avinash Reviewed-by: Thierry Reding Signed-off-by: Sebastian Andrzej Siewior --- arch/arm/boot/dts/am335x-evmsk.dts | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts index f67c360..c21fdaf 100644 --- a/arch/arm/boot/dts/am335x-evmsk.dts +++ b/arch/arm/boot/dts/am335x-evmsk.dts @@ -51,6 +51,12 @@ 0x9c 0x27 /* gpmc_ben0_cle.gpio2_5, INPUT | MODE7 */ >; }; + + ecap2_pins: backlight_pins { + pinctrl-single,pins = < + 0x19c 0x4 /* mcasp0_ahclkr.ecap2_in_pwm2_out MODE4 */ + >; + }; }; ocp { @@ -94,6 +100,16 @@ st,max-limit-z = <750>; }; }; + + epwmss2: epwmss@48304000 { + status = "okay"; + + ecap2: ecap@48304100 { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&ecap2_pins>; + }; + }; }; vbat: fixedregulator@0 { @@ -170,6 +186,13 @@ gpios = <&gpio2 5 0>; }; }; + + backlight { + compatible = "pwm-backlight"; + pwms = <&ecap2 0 50000 1>; + brightness-levels = <0 58 61 66 75 90 125 170 255>; + default-brightness-level = <8>; + }; }; /include/ "tps65910.dtsi"