| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/leds/register-bit-led.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Device Tree Bindings for Register Bit LEDs |
| |
| maintainers: |
| - Linus Walleij <linus.walleij@linaro.org> |
| |
| description: |+ |
| 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 |
| |
| allOf: |
| - $ref: /schemas/leds/common.yaml# |
| |
| properties: |
| $nodename: |
| description: |
| The unit-address is in the form of @<reg addr>,<bit offset> |
| pattern: '^led@[0-9a-f]+,[0-9a-f]{1,2}$' |
| |
| compatible: |
| const: register-bit-led |
| |
| reg: |
| description: |
| The register address and size |
| maxItems: 1 |
| |
| mask: |
| description: |
| bit mask for the bit controlling this LED in the register |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| enum: |
| [ 0x1, 0x2, 0x4, 0x8, 0x10, 0x20, 0x40, 0x80, 0x100, 0x200, 0x400, 0x800, |
| 0x1000, 0x2000, 0x4000, 0x8000, 0x10000, 0x20000, 0x40000, 0x80000, |
| 0x100000, 0x200000, 0x400000, 0x800000, 0x1000000, 0x2000000, 0x4000000, |
| 0x8000000, 0x10000000, 0x20000000, 0x40000000, 0x80000000 ] |
| |
| offset: |
| description: |
| register offset to the register controlling this LED |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| deprecated: true |
| |
| required: |
| - compatible |
| - mask |
| - reg |
| |
| unevaluatedProperties: false |
| |
| examples: |
| - | |
| |
| syscon@10000000 { |
| compatible = "arm,realview-pb1176-syscon", "syscon"; |
| reg = <0x10000000 0x1000>; |
| #address-cells = <1>; |
| #size-cells = <1>; |
| ranges = <0x0 0x10000000 0x1000>; |
| |
| led@8,0 { |
| compatible = "register-bit-led"; |
| reg = <0x08 0x04>; |
| offset = <0x08>; |
| mask = <0x01>; |
| label = "versatile:0"; |
| linux,default-trigger = "heartbeat"; |
| default-state = "on"; |
| }; |
| led@8,1 { |
| compatible = "register-bit-led"; |
| reg = <0x08 0x04>; |
| offset = <0x08>; |
| mask = <0x02>; |
| label = "versatile:1"; |
| default-state = "off"; |
| }; |
| led@8,2 { |
| compatible = "register-bit-led"; |
| reg = <0x08 0x04>; |
| offset = <0x08>; |
| mask = <0x04>; |
| label = "versatile:2"; |
| default-state = "off"; |
| }; |
| }; |
| ... |
