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Commit 7c128026 authored by Enric Balletbo i Serra's avatar Enric Balletbo i Serra Committed by Tony Lindgren
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ARM: dts: am335x-sl50: update backlight nodes 



This patch updates the backlight nodes to improve the support and describe
better how hardware is done. The changes done were:

 * Use PWM_POLARITY_INVERTED instead of the hardcoded number.
 * Add pinctrl configuration.
 * Add the enable gpio definition.
 * Add the power supply definition.
 * Add more brightness levels.

Signed-off-by: default avatarEnric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent e40c7f75

arch/arm/boot/dts/am335x-sl50.dts

+55 −6
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ 
/dts-v1/;



#include "am33xx.dtsi"

#include <dt-bindings/pwm/pwm.h>



/ {

	model = "Toby Churchill SL50 Series";
@@ -60,16 +61,44 @@ 


	backlight0: disp0 {

		compatible = "pwm-backlight";

		pwms = <&ehrpwm1 0 500000 0>;

		brightness-levels = <0 10 20 30 40 50 60 70 80 90 99>;

		default-brightness-level = <6>;

		pinctrl-names = "default";

		pinctrl-0 = <&backlight0_pins>;

		pwms = <&ehrpwm1 0 500000 PWM_POLARITY_INVERTED>;

		brightness-levels = < 0  1  2  3  4  5  6  7  8  9

				     10 11 12 13 14 15 16 17 18 19

				     20 21 22 23 24 25 26 27 28 29

				     30 31 32 33 34 35 36 37 38 39

				     40 41 42 43 44 45 46 47 48 49

				     50 51 52 53 54 55 56 57 58 59

				     60 61 62 63 64 65 66 67 68 69

				     70 71 72 73 74 75 76 77 78 79

				     80 81 82 83 84 85 86 87 88 89

				     90 91 92 93 94 95 96 97 98 99

				    100>;

		default-brightness-level = <50>;

		enable-gpios = <&gpio2 4 GPIO_ACTIVE_HIGH>;

		power-supply = <&vdd_sys_reg>;

	};



	backlight1: disp1 {

		compatible = "pwm-backlight";

		pwms = <&ehrpwm1 1 500000 0>;

		brightness-levels = <0 10 20 30 40 50 60 70 80 90 99>;

		default-brightness-level = <6>;

		pinctrl-names = "default";

		pinctrl-0 = <&backlight1_pins>;

		pwms = <&ehrpwm1 1 500000 PWM_POLARITY_INVERTED>;

		brightness-levels = < 0  1  2  3  4  5  6  7  8  9

				     10 11 12 13 14 15 16 17 18 19

				     20 21 22 23 24 25 26 27 28 29

				     30 31 32 33 34 35 36 37 38 39

				     40 41 42 43 44 45 46 47 48 49

				     50 51 52 53 54 55 56 57 58 59

				     60 61 62 63 64 65 66 67 68 69

				     70 71 72 73 74 75 76 77 78 79

				     80 81 82 83 84 85 86 87 88 89

				     90 91 92 93 94 95 96 97 98 99

				    100>;

		default-brightness-level = <50>;

		enable-gpios = <&gpio0 26 GPIO_ACTIVE_HIGH>;

		power-supply = <&vdd_sys_reg>;

	};



	clocks {
@@ -108,6 +137,14 @@ 
		reset-gpios = <&gpio1 20 GPIO_ACTIVE_LOW>;

	};



	vdd_sys_reg: regulator@0 {

		compatible = "regulator-fixed";

		regulator-name = "vdd_sys_reg";

		regulator-min-microvolt = <5000000>;

		regulator-max-microvolt = <5000000>;

		regulator-always-on;

	};



	vmmcsd_fixed: fixedregulator0 {

		compatible = "regulator-fixed";

		regulator-name = "vmmcsd_fixed";
@@ -120,6 +157,18 @@ 
	pinctrl-names = "default";

	pinctrl-0 = <&lwb_pins>;



	backlight0_pins: pinmux_backlight0_pins {

		pinctrl-single,pins = <

			AM33XX_IOPAD(0x898, PIN_OUTPUT | MUX_MODE7)	/* gpmc_wen.gpio2_4 */

		>;

	};



	backlight1_pins: pinmux_backlight1_pins {

		pinctrl-single,pins = <

			AM33XX_IOPAD(0x828, PIN_OUTPUT | MUX_MODE7)     /* gpmc_ad10.gpio0_26 */

		>;

	};



	led_pins: pinmux_led_pins {

		pinctrl-single,pins = <

			AM33XX_IOPAD(0x854, PIN_OUTPUT | MUX_MODE7)	/* gpmc_a5.gpio1_21 */