From patchwork Wed Jan 2 13:24:54 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: avinash philip X-Patchwork-Id: 1923611 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 3E23A3FC85 for ; Wed, 2 Jan 2013 13:27:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752795Ab3ABN1R (ORCPT ); Wed, 2 Jan 2013 08:27:17 -0500 Received: from comal.ext.ti.com ([198.47.26.152]:46077 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752649Ab3ABN1P (ORCPT ); Wed, 2 Jan 2013 08:27:15 -0500 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id r02DR7o5013585; Wed, 2 Jan 2013 07:27:08 -0600 Received: from DBDE70.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id r02DR6JI024415; Wed, 2 Jan 2013 18:57:06 +0530 (IST) Received: from dbdp32.itg.ti.com (172.24.170.251) by dbde70.ent.ti.com (172.24.170.148) with Microsoft SMTP Server id 14.1.323.3; Wed, 2 Jan 2013 18:57:06 +0530 Received: from ucmsshproxy.india.ext.ti.com (dbdp20.itg.ti.com [172.24.170.38]) by dbdp32.itg.ti.com (8.13.8/8.13.8) with SMTP id r02DR6fj005600; Wed, 2 Jan 2013 18:57:06 +0530 Received: from symphony.india.ext.ti.com (unknown [192.168.247.13]) by ucmsshproxy.india.ext.ti.com (Postfix) with ESMTP id B7721158003; Wed, 2 Jan 2013 18:57:05 +0530 (IST) Received: from ubuntu-psp-linux.india.ext.ti.com (ubuntu-psp-linux [192.168.247.46]) by symphony.india.ext.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id r02DQxR10916; Wed, 2 Jan 2013 18:56:59 +0530 (IST) From: Philip Avinash To: , , , CC: , , , , , , , , Philip Avinash Subject: [PATCH 7/7] ARM: dts: AM33XX: Add PWM backlight DT data to am335x-evmsk Date: Wed, 2 Jan 2013 18:54:54 +0530 Message-ID: <1357133094-30806-8-git-send-email-avinashphilip@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1357133094-30806-1-git-send-email-avinashphilip@ti.com> References: <1357133094-30806-1-git-send-email-avinashphilip@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org 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 --- 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 f5a6162..a50f286 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 = <&gpio3 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"