summaryrefslogtreecommitdiff
path: root/Documentation
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2018-06-11 17:23:19 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-11 17:23:19 +0300
commit0f105cf4f60e5afdf2932fed7f05ce776ce14289 (patch)
tree32b2b33118c6c08befe0c6197ba98932747435d6 /Documentation
parent883cad5ba8cc2d9b740b4ad0a8a91063c99c75a3 (diff)
parentd5318d302e7cf6583ec85a2a8bfbb3a3910ae372 (diff)
downloadlinux-0f105cf4f60e5afdf2932fed7f05ce776ce14289.tar.xz
Merge tag 'backlight-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones: "Core Frameworks - Provide helpers to enable/disable backlight - Provide standard and devres versions OF find helpers New Drivers: - Add support for the Zodiac Inflight Innovations RAVE Supervisory Processor New Functionality: - Allow pwm-on/pwm-off delay to be specified via DT Bug Fixes: - Fix ordering of the power {en,dis}able and PWM {en,dis}able signals - Fix Device Tree node look-up" * tag 'backlight-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: backlight: as3711_bl: Fix Device Tree node leaks backlight: tps65217_bl: Fix Device Tree node lookup backlight: max8925_bl: Fix Device Tree node lookup backlight: as3711_bl: Fix Device Tree node lookup MAINTAINERS: Add dri-devel for backlight subsystem patches backlight: Nuke BL_CORE_DRIVER1 staging: fbtft: Stop using BL_CORE_DRIVER1 backlight: pandora: Stop using BL_CORE_DRIVER1 backlight: generic-bl: Remove DRIVER1 state backlight: Nuke unused backlight.props.state states backlight: otm3225a: Add support for ORISE OTM3225A LCD SoC backlight: pwm_bl: Don't use GPIOF_* with gpiod_get_direction pwm-backlight: Add support for PWM delays proprieties. dt-bindings: pwm-backlight: Add PWM delay proprieties. pwm-backlight: Enable/disable the PWM before/after LCD enable toggle. dt-bindings: backlight: Add binding for RAVE SP backlight driver backlight: Add RAVE SP backlight driver
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt6
-rw-r--r--Documentation/devicetree/bindings/leds/backlight/zii,rave-sp-backlight.txt23
2 files changed, 29 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt b/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt
index 764db86d441a..310810906613 100644
--- a/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt
+++ b/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt
@@ -17,6 +17,10 @@ Optional properties:
"pwms" property (see PWM binding[0])
- enable-gpios: contains a single GPIO specifier for the GPIO which enables
and disables the backlight (see GPIO binding[1])
+ - post-pwm-on-delay-ms: Delay in ms between setting an initial (non-zero) PWM
+ and enabling the backlight using GPIO.
+ - pwm-off-delay-ms: Delay in ms between disabling the backlight using GPIO
+ and setting PWM value to 0.
[0]: Documentation/devicetree/bindings/pwm/pwm.txt
[1]: Documentation/devicetree/bindings/gpio/gpio.txt
@@ -32,4 +36,6 @@ Example:
power-supply = <&vdd_bl_reg>;
enable-gpios = <&gpio 58 0>;
+ post-pwm-on-delay-ms = <10>;
+ pwm-off-delay-ms = <10>;
};
diff --git a/Documentation/devicetree/bindings/leds/backlight/zii,rave-sp-backlight.txt b/Documentation/devicetree/bindings/leds/backlight/zii,rave-sp-backlight.txt
new file mode 100644
index 000000000000..ff5c92138650
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/zii,rave-sp-backlight.txt
@@ -0,0 +1,23 @@
+Zodiac Inflight Innovations RAVE Supervisory Processor Backlight Bindings
+
+RAVE SP backlight device is a "MFD cell" device corresponding to
+backlight functionality of RAVE Supervisory Processor. It is expected
+that its Device Tree node is specified as a child of the node
+corresponding to the parent RAVE SP device (as documented in
+Documentation/devicetree/bindings/mfd/zii,rave-sp.txt)
+
+Required properties:
+
+- compatible: Should be "zii,rave-sp-backlight"
+
+Example:
+
+ rave-sp {
+ compatible = "zii,rave-sp-rdu1";
+ current-speed = <38400>;
+
+ backlight {
+ compatible = "zii,rave-sp-backlight";
+ };
+ }
+