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authorEnric Balletbo i Serra <enric.balletbo@collabora.com>2018-06-06 18:54:06 +0300
committerTony Lindgren <tony@atomide.com>2018-07-03 10:14:31 +0300
commit7c1280267ac0e17df3f1d450cc9c5612a5aba54d (patch)
tree1151c35e0f6f5eec2a9a7bdf06e55ce2acdd5f86 /arch/arm/boot/dts/am335x-sl50.dts
parente40c7f75c9bc81a19c3f927769e42fd974fccaa2 (diff)
downloadlinux-7c1280267ac0e17df3f1d450cc9c5612a5aba54d.tar.xz
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>
Diffstat (limited to 'arch/arm/boot/dts/am335x-sl50.dts')
-rw-r--r--arch/arm/boot/dts/am335x-sl50.dts61
1 files changed, 55 insertions, 6 deletions
diff --git a/arch/arm/boot/dts/am335x-sl50.dts b/arch/arm/boot/dts/am335x-sl50.dts
index 1bcc60424ecd..dedf54d358ae 100644
--- a/arch/arm/boot/dts/am335x-sl50.dts
+++ b/arch/arm/boot/dts/am335x-sl50.dts
@@ -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 */