lkml.org 
[lkml]   [2013]   [Jun]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3/4] ARM: dts: AM33XX: Add PWM backlight DT data to am335x-evm
Date
From: Philip Avinash <avinashphilip@ti.com>

PWM output from ecap0 uses as backlight source. Also adds low threshold
value to have a uniform divisions in brightness-levels scales.

Signed-off-by: Philip Avinash <avinashphilip@ti.com>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
arch/arm/boot/dts/am335x-evm.dts | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts
index 0423298..35b2f77 100644
--- a/arch/arm/boot/dts/am335x-evm.dts
+++ b/arch/arm/boot/dts/am335x-evm.dts
@@ -44,6 +44,12 @@
0x154 0x27 /* spi0_d0.gpio0_3, INPUT | MODE7 */
>;
};
+
+ ecap0_pins: backlight_pins {
+ pinctrl-single,pins = <
+ 0x164 0x0 /* eCAP0_in_PWM0_out.eCAP0_in_PWM0_out MODE0 */
+ >;
+ };
};

ocp {
@@ -102,6 +108,16 @@
reg = <0x48>;
};
};
+
+ epwmss0: epwmss@48300000 {
+ status = "okay";
+
+ ecap0: ecap@48300100 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&ecap0_pins>;
+ };
+ };
};

vbat: fixedregulator@0 {
@@ -158,6 +174,13 @@
gpio-key,wakeup;
};
};
+
+ backlight {
+ compatible = "pwm-backlight";
+ pwms = <&ecap0 0 50000 0>;
+ brightness-levels = <0 51 53 56 62 75 101 152 255>;
+ default-brightness-level = <8>;
+ };
};

/include/ "tps65910.dtsi"
--
1.7.10.4


\
 
 \ /
  Last update: 2013-06-06 17:21    [W:0.076 / U:0.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site