From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Philip, Avinash" Subject: [PATCH v4 11/11] ARM: dts: AM33XX: Add PWM backlight DT data to am335x-evmsk Date: Wed, 21 Nov 2012 18:41:08 +0530 Message-ID: <1353503469-18634-12-git-send-email-avinashphilip@ti.com> References: <1353503469-18634-1-git-send-email-avinashphilip@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1353503469-18634-1-git-send-email-avinashphilip@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: thierry.reding@avionic-design.de, paul@pwsan.com, tony@atomide.com, linux@arm.linux.org.uk, b-cousson@ti.com Cc: hvaibhav@ti.com, anilkumar@ti.com, linux-kernel@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, linux-doc@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, nsekhar@ti.com, gururaja.hebbar@ti.com, vaibhav.bedia@ti.com, "Philip, Avinash" List-Id: devicetree@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 --- :100644 100644 f5a6162... 6f3de83... M arch/arm/boot/dts/am335x-evmsk.dts arch/arm/boot/dts/am335x-evmsk.dts | 23 +++++++++++++++++++++++ 1 files changed, 23 insertions(+), 0 deletions(-) diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts index f5a6162..6f3de83 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" -- 1.7.0.4