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