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52 lines
1.5 KiB
Text
52 lines
1.5 KiB
Text
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LEDs connected to Broadcom BCM6858 controller
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This controller is present on BCM6858, BCM6328, BCM6362 and BCM63268.
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In these SoCs it's possible to control LEDs both as GPIOs or by hardware.
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Required properties:
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- compatible : should be "brcm,bcm6858-leds".
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- #address-cells : must be 1.
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- #size-cells : must be 0.
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- reg : BCM6858 LED controller address and size.
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Optional properties:
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- brcm,serial-led-msb-first : Boolean, msb data come out first on serial data pin
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Default : false
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- brcm,serial-led-en-pol : Boolean, serial led polarity (true => active high)
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Default : false
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- brcm,serial-led-clk-pol : Boolean, serial clock polarity (true => active high)
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Default : false
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- brcm,serial-led-data-ppol : Boolean, serial data polarity (true => active high)
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Default : false
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- brcm,serial-shift-inv : Boolean, led test mode
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Default : false
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Each LED is represented as a sub-node of the brcm,bcm6858-leds device.
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LED sub-node required properties:
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- reg : LED pin number (only LEDs 0 to 32 are valid).
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LED sub-node optional properties:
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- label : see Documentation/devicetree/bindings/leds/common.txt
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- active-low : Boolean, makes LED active low.
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Default : false
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Examples:
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BCM6328 with 2 GPIO LEDs
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leds0: led-controller@ff800800 {
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compatible = "brcm,bcm6858-leds";
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0x0 0xff800800 0x0 0xe4>;
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led@2 {
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reg = <2>;
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label = "green:inet";
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};
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led@5 {
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reg = <5>;
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label = "red:alarm";
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};
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};
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