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📄 ams,as3645a.txt(2.44 KB)
📁 backlight
📄 common.txt(38 B)
📄 common.yaml(7.81 KB)
📄 cznic,turris-omnia-leds.yaml(2.17 KB)
📁 irled
📄 leds-aat1290.txt(2.86 KB)
📄 leds-an30259a.txt(1.33 KB)
📄 leds-aw2013.yaml(1.86 KB)
📄 leds-bcm6328.txt(8.25 KB)
📄 leds-bcm6358.txt(2.97 KB)
📄 leds-class-multicolor.yaml(1.22 KB)
📄 leds-cpcap.txt(939 B)
📄 leds-cr0014114.txt(1.37 KB)
📄 leds-el15203000.txt(1.69 KB)
📄 leds-gpio.yaml(2.04 KB)
📄 leds-is31fl319x.txt(1.63 KB)
📄 leds-is31fl32xx.txt(1.14 KB)
📄 leds-ktd2692.txt(1.65 KB)
📄 leds-lm3532.txt(3.59 KB)
📄 leds-lm3601x.txt(1.34 KB)
📄 leds-lm36274.txt(2.18 KB)
📄 leds-lm3692x.txt(1.84 KB)
📄 leds-lm3697.txt(2.03 KB)
📄 leds-lp55xx.txt(4.26 KB)
📄 leds-lp55xx.yaml(5.57 KB)
📄 leds-lp8860.txt(1.26 KB)
📄 leds-lt3593.txt(1.13 KB)
📄 leds-max77650.yaml(1.03 KB)
📄 leds-mt6323.txt(1.62 KB)
📄 leds-netxbig.txt(2.3 KB)
📄 leds-ns2.txt(1.05 KB)
📄 leds-pca9532.txt(1.31 KB)
📄 leds-pca955x.txt(1.88 KB)
📄 leds-pm8058.txt(1.96 KB)
📄 leds-powernv.txt(613 B)
📄 leds-pwm.txt(1.36 KB)
📄 leds-sc27xx-bltc.txt(993 B)
📄 leds-sgm3140.yaml(1.42 KB)
📄 leds-spi-byte.txt(1.25 KB)
📄 leds-tlc591xx.txt(786 B)
📄 leds-trigger-pattern.txt(1.96 KB)
📄 pca963x.txt(1.44 KB)
📄 register-bit-led.txt(2.3 KB)
📄 rohm,bd71828-leds.yaml(1.42 KB)
📄 tca6507.txt(1.01 KB)
📄 trigger-source.yaml(646 B)

Editing: register-bit-led.txt

Device Tree Bindings for Register Bit LEDs

Register bit leds are used with syscon multifunctional devices
where single bits in a certain register can turn on/off a
single LED. The register bit LEDs appear as children to the
syscon device, with the proper compatible string. For the
syscon bindings see:
Documentation/devicetree/bindings/mfd/syscon.yaml

Each LED is represented as a sub-node of the syscon device. Each
node's name represents the name of the corresponding LED.

LED sub-node properties:

Required properties:
- compatible : must be "register-bit-led"
- offset : register offset to the register controlling this LED
- mask : bit mask for the bit controlling this LED in the register
  typically 0x01, 0x02, 0x04 ...

Optional properties:
- label : (optional)
  see Documentation/devicetree/bindings/leds/common.txt
- linux,default-trigger : (optional)
  see Documentation/devicetree/bindings/leds/common.txt
- default-state: (optional) The initial state of the LED
  see Documentation/devicetree/bindings/leds/common.txt

Example:

syscon: syscon@10000000 {
	compatible = "arm,realview-pb1176-syscon", "syscon";
	reg = <0x10000000 0x1000>;

led@8.0 {
		compatible = "register-bit-led";
		offset = <0x08>;
		mask = <0x01>;
		label = "versatile:0";
		linux,default-trigger = "heartbeat";
		default-state = "on";
	};
	led@8.1 {
		compatible = "register-bit-led";
		offset = <0x08>;
		mask = <0x02>;
		label = "versatile:1";
		linux,default-trigger = "mmc0";
		default-state = "off";
	};
	led@8.2 {
		compatible = "register-bit-led";
		offset = <0x08>;
		mask = <0x04>;
		label = "versatile:2";
		linux,default-trigger = "cpu0";
		default-state = "off";
	};
	led@8.3 {
		compatible = "register-bit-led";
		offset = <0x08>;
		mask = <0x08>;
		label = "versatile:3";
		default-state = "off";
	};
	led@8.4 {
		compatible = "register-bit-led";
		offset = <0x08>;
		mask = <0x10>;
		label = "versatile:4";
		default-state = "off";
	};
	led@8.5 {
		compatible = "register-bit-led";
		offset = <0x08>;
		mask = <0x20>;
		label = "versatile:5";
		default-state = "off";
	};
	led@8.6 {
		compatible = "register-bit-led";
		offset = <0x08>;
		mask = <0x40>;
		label = "versatile:6";
		default-state = "off";
	};
	led@8.7 {
		compatible = "register-bit-led";
		offset = <0x08>;
		mask = <0x80>;
		label = "versatile:7";
		default-state = "off";
	};
};

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Editing: register-bit-led.txt

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