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    Subject[PATCH 1/2] dt-bindings: leds: Add Allwinner R329/D1 LED controller
    Date
    The Allwinner R329 and D1 SoCs contain an LED controller designed to
    drive a series of RGB LED pixels. It supports PIO and DMA transfers, and
    has configurable timing and pixel format.

    Signed-off-by: Samuel Holland <samuel@sholland.org>
    ---
    .../leds/allwinner,sun50i-r329-ledc.yaml | 141 ++++++++++++++++++
    1 file changed, 141 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/leds/allwinner,sun50i-r329-ledc.yaml

    diff --git a/Documentation/devicetree/bindings/leds/allwinner,sun50i-r329-ledc.yaml b/Documentation/devicetree/bindings/leds/allwinner,sun50i-r329-ledc.yaml
    new file mode 100644
    index 000000000000..bf883944e911
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/leds/allwinner,sun50i-r329-ledc.yaml
    @@ -0,0 +1,141 @@
    +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
    +%YAML 1.2
    +---
    +$id: http://devicetree.org/schemas/leds/allwinner,sun50i-r329-ledc.yaml#
    +$schema: http://devicetree.org/meta-schemas/core.yaml#
    +
    +title: Allwinner sunxi LED Controller Bindings
    +
    +maintainers:
    + - Samuel Holland <samuel@sholland.org>
    +
    +description:
    + The LED controller found in Allwinner sunxi SoCs uses a one-wire serial
    + interface to drive up to 1024 RGB LEDs.
    +
    +properties:
    + compatible:
    + oneOf:
    + - const: allwinner,sun50i-r329-ledc
    + - items:
    + - enum:
    + - allwinner,sun20i-d1-ledc
    + - const: allwinner,sun50i-r329-ledc
    +
    + reg:
    + maxItems: 1
    +
    + "#address-cells":
    + const: 1
    +
    + "#size-cells":
    + const: 0
    +
    + clocks:
    + items:
    + - description: Bus clock
    + - description: Module clock
    +
    + clock-names:
    + items:
    + - const: bus
    + - const: mod
    +
    + resets:
    + maxItems: 1
    +
    + dmas:
    + items:
    + - description: TX DMA channel
    +
    + dma-names:
    + items:
    + - const: tx
    +
    + interrupts:
    + maxItems: 1
    +
    + vled-supply:
    + description: Regulator supplying power to external LEDs
    +
    + format:
    + description: Pixel format (subpixel transmission order), default is "grb"
    + enum:
    + - "bgr"
    + - "brg"
    + - "gbr"
    + - "grb"
    + - "rbg"
    + - "rgb"
    +
    + t0h-ns:
    + $ref: /schemas/types.yaml#/definitions/uint32
    + description: Length of high pulse when transmitting a "0" bit
    +
    + t0l-ns:
    + $ref: /schemas/types.yaml#/definitions/uint32
    + description: Length of low pulse when transmitting a "0" bit
    +
    + t1h-ns:
    + $ref: /schemas/types.yaml#/definitions/uint32
    + description: Length of high pulse when transmitting a "1" bit
    +
    + t1h-ns:
    + $ref: /schemas/types.yaml#/definitions/uint32
    + description: Length of low pulse when transmitting a "1" bit
    +
    + treset-ns:
    + $ref: /schemas/types.yaml#/definitions/uint32
    + description: Minimum delay between transmission frames
    +
    +patternProperties:
    + "^multi-led@[0-9a-f]+$":
    + type: object
    + $ref: leds-class-multicolor.yaml#
    + properties:
    + reg:
    + minimum: 0
    + maximum: 1023
    + description: Index of the LED in the series (must be contiguous)
    +
    + required:
    + - reg
    +
    +required:
    + - compatible
    + - reg
    + - clocks
    + - clock-names
    + - resets
    + - dmas
    + - dma-names
    + - interrupts
    +
    +additionalProperties: false
    +
    +examples:
    + - |
    + #include <dt-bindings/interrupt-controller/irq.h>
    + #include <dt-bindings/leds/common.h>
    +
    + ledc: led-controller@2008000 {
    + compatible = "allwinner,sun20i-d1-ledc",
    + "allwinner,sun50i-r329-ledc";
    + reg = <0x2008000 0x400>;
    + #address-cells = <1>;
    + #size-cells = <0>;
    + clocks = <&ccu 12>, <&ccu 34>;
    + clock-names = "bus", "mod";
    + resets = <&ccu 12>;
    + dmas = <&dma 42>;
    + dma-names = "tx";
    + interrupts = <36 IRQ_TYPE_LEVEL_HIGH>;
    +
    + multi-led@0 {
    + reg = <0x0>;
    + color = <LED_COLOR_ID_RGB>;
    + function = LED_FUNCTION_INDICATOR;
    + };
    + };
    +
    +...
    --
    2.31.1
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