Philippe Reynes | 9d5fb9c | 2019-03-22 17:02:01 +0100 | [diff] [blame] | 1 | LEDs connected to Broadcom BCM6858 controller |
| 2 | |
| 3 | This controller is present on BCM6858, BCM6328, BCM6362 and BCM63268. |
| 4 | In these SoCs it's possible to control LEDs both as GPIOs or by hardware. |
| 5 | |
| 6 | Required properties: |
| 7 | - compatible : should be "brcm,bcm6858-leds". |
| 8 | - #address-cells : must be 1. |
| 9 | - #size-cells : must be 0. |
| 10 | - reg : BCM6858 LED controller address and size. |
| 11 | |
| 12 | Optional properties: |
| 13 | - brcm,serial-led-msb-first : Boolean, msb data come out first on serial data pin |
| 14 | Default : false |
| 15 | - brcm,serial-led-en-pol : Boolean, serial led polarity (true => active high) |
| 16 | Default : false |
| 17 | - brcm,serial-led-clk-pol : Boolean, serial clock polarity (true => active high) |
| 18 | Default : false |
| 19 | - brcm,serial-led-data-ppol : Boolean, serial data polarity (true => active high) |
| 20 | Default : false |
| 21 | - brcm,serial-shift-inv : Boolean, led test mode |
| 22 | Default : false |
| 23 | |
| 24 | Each LED is represented as a sub-node of the brcm,bcm6858-leds device. |
| 25 | |
| 26 | LED sub-node required properties: |
| 27 | - reg : LED pin number (only LEDs 0 to 32 are valid). |
| 28 | |
| 29 | LED sub-node optional properties: |
| 30 | - label : see Documentation/devicetree/bindings/leds/common.txt |
| 31 | - active-low : Boolean, makes LED active low. |
| 32 | Default : false |
| 33 | |
| 34 | Examples: |
| 35 | BCM6328 with 2 GPIO LEDs |
| 36 | leds0: led-controller@ff800800 { |
| 37 | compatible = "brcm,bcm6858-leds"; |
| 38 | #address-cells = <1>; |
| 39 | #size-cells = <0>; |
| 40 | reg = <0x0 0xff800800 0x0 0xe4>; |
| 41 | |
| 42 | led@2 { |
| 43 | reg = <2>; |
| 44 | label = "green:inet"; |
| 45 | }; |
| 46 | |
| 47 | led@5 { |
| 48 | reg = <5>; |
| 49 | label = "red:alarm"; |
| 50 | }; |
| 51 | }; |