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# 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";
};
};
...
|
