register-bit-led.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/leds/register-bit-led.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Device Tree Bindings for Register Bit LEDs
    8 
    9 maintainers:
   10   - Linus Walleij <linus.walleij@linaro.org>
   11 
   12 description: |+
   13   Register bit leds are used with syscon multifunctional devices where single
   14   bits in a certain register can turn on/off a single LED. The register bit LEDs
   15   appear as children to the syscon device, with the proper compatible string.
   16   For the syscon bindings see:
   17   Documentation/devicetree/bindings/mfd/syscon.yaml
   18 
   19 allOf:
   20   - $ref: /schemas/leds/common.yaml#
   21 
   22 properties:
   23   $nodename:
   24     description:
   25       The unit-address is in the form of @<reg addr>,<bit offset>
   26     pattern: '^led@[0-9a-f]+,[0-9a-f]{1,2}$'
   27 
   28   compatible:
   29     const: register-bit-led
   30 
   31   reg:
   32     description:
   33       The register address and size
   34     maxItems: 1
   35 
   36   mask:
   37     description:
   38       bit mask for the bit controlling this LED in the register
   39     $ref: /schemas/types.yaml#/definitions/uint32
   40     enum:
   41       [ 0x1, 0x2, 0x4, 0x8, 0x10, 0x20, 0x40, 0x80, 0x100, 0x200, 0x400, 0x800,
   42         0x1000, 0x2000, 0x4000, 0x8000, 0x10000, 0x20000, 0x40000, 0x80000,
   43         0x100000, 0x200000, 0x400000, 0x800000, 0x1000000, 0x2000000, 0x4000000,
   44         0x8000000, 0x10000000, 0x20000000, 0x40000000, 0x80000000 ]
   45 
   46   offset:
   47     description:
   48       register offset to the register controlling this LED
   49     $ref: /schemas/types.yaml#/definitions/uint32
   50     deprecated: true
   51 
   52 required:
   53   - compatible
   54   - mask
   55   - reg
   56 
   57 unevaluatedProperties: false
   58 
   59 examples:
   60   - |
   61 
   62     syscon@10000000 {
   63         compatible = "arm,realview-pb1176-syscon", "syscon";
   64         reg = <0x10000000 0x1000>;
   65         #address-cells = <1>;
   66         #size-cells = <1>;
   67         ranges = <0x0 0x10000000 0x1000>;
   68 
   69         led@8,0 {
   70             compatible = "register-bit-led";
   71             reg = <0x08 0x04>;
   72             offset = <0x08>;
   73             mask = <0x01>;
   74             label = "versatile:0";
   75             linux,default-trigger = "heartbeat";
   76             default-state = "on";
   77         };
   78         led@8,1 {
   79             compatible = "register-bit-led";
   80             reg = <0x08 0x04>;
   81             offset = <0x08>;
   82             mask = <0x02>;
   83             label = "versatile:1";
   84             default-state = "off";
   85         };
   86         led@8,2 {
   87             compatible = "register-bit-led";
   88             reg = <0x08 0x04>;
   89             offset = <0x08>;
   90             mask = <0x04>;
   91             label = "versatile:2";
   92             default-state = "off";
   93         };
   94     };
   95 ...

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/leds/register-bit-led.yaml

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sys/contrib/device-tree/Bindings/leds/register-bit-led.yaml