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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: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Enric Balletbo i Serra 2018-06-06 17:54:06 +02:00 committed by Tony Lindgren
parent e40c7f75c9
commit 7c1280267a
1 changed files with 55 additions and 6 deletions
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61
arch/arm/boot/dts/am335x-sl50.dts
View File

@ -8,6 +8,7 @@
/dts-v1/;
#include "am33xx.dtsi"
#include <dt-bindings/pwm/pwm.h>
/ {
model = "Toby Churchill SL50 Series";
@ -60,16 +61,44 @@ led3 {
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 @@ emmc_pwrseq: pwrseq@0 {
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 @@ &am33xx_pinmux {
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 */