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    Subject[PATCH 13/14] dt-bindings: backlight: Add Mediatek MT6370 backlight binding documentation
    Date
    From: ChiYuan Huang <cy_huang@richtek.com>

    Add mt6370 backlight binding documentation.

    Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
    ---
    .../backlight/mediatek,mt6370-backlight.yaml | 110 ++++++++++++++++++
    1 file changed, 110 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml

    diff --git a/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml
    new file mode 100644
    index 000000000000..81d72ed44be4
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml
    @@ -0,0 +1,110 @@
    +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    +%YAML 1.2
    +---
    +$id: http://devicetree.org/schemas/leds/backlight/mediatek,mt6370-backlight.yaml#
    +$schema: http://devicetree.org/meta-schemas/core.yaml#
    +
    +title: Mediatek MT6370 Backlight
    +
    +maintainers:
    + - ChiaEn Wu <chiaen_wu@richtek.com>
    +
    +description: |
    + MT6370 is a highly-integrated smart power management IC, which includes a
    + single cell Li-Ion/Li-Polymer switching battery charger, a USB Type-C &
    + Power Delivery (PD) controller, dual flash LED current sources, a RGB LED
    + driver, a backlight WLED driver, a display bias driver and a general LDO for
    + portable devices.
    +
    + For the LCD backlight, it can provide 4 channel WLED driving capability.
    + Each channel driving current is up to 30mA
    +
    +allOf:
    + - $ref: common.yaml#
    +
    +properties:
    + compatible:
    + const: mediatek,mt6370-backlight
    +
    + default-brightness:
    + minimum: 0
    + maximum: 2048
    +
    + max-brightness:
    + minimum: 0
    + maximum: 2048
    +
    + enable-gpios:
    + description: External backlight 'enable' pin
    + maxItems: 1
    +
    + mediatek,bled-pwm-enable:
    + description: |
    + Enable external PWM input for backlight dimming
    + type: boolean
    +
    + mediatek,bled-pwm-hys-enable:
    + description: |
    + Enable the backlight input-hysteresis for PWM mode
    + type: boolean
    +
    + mediatek,bled-pwm-hys-sel:
    + $ref: /schemas/types.yaml#/definitions/uint8
    + enum: [0, 1, 2, 3]
    + description: |
    + Backlight PWM hysteresis input level selection.
    + value mapping:
    + - 0: 1bit
    + - 1: 2bit
    + - 2: 4bit
    + - 3: 6bit
    +
    + mediatek,bled-ovp-shutdown:
    + description: |
    + Enable the backlight shutdown when OVP level triggered
    + type: boolean
    +
    + mediatek,bled-ovp-level-sel:
    + $ref: /schemas/types.yaml#/definitions/uint8
    + enum: [0, 1, 2, 3]
    + description: |
    + Backlight OVP level selection.
    + value mapping:
    + - 0: 17V
    + - 1: 21V
    + - 2: 25V
    + - 3: 29V
    +
    + mediatek,bled-ocp-shutdown:
    + description: |
    + Enable the backlight shutdown when OCP level triggerred.
    + type: boolean
    +
    + mediatek,bled-ocp-level-sel:
    + $ref: /schemas/types.yaml#/definitions/uint8
    + enum: [0, 1, 2, 3]
    + description: |
    + Backlight OC level selection.
    + value mapping:
    + - 0: 900mA
    + - 1: 1200mA
    + - 2: 1500mA
    + - 3: 1800mA
    +
    + mediatek,bled-channel-use:
    + $ref: /schemas/types.yaml#/definitions/uint8
    + description: |
    + Backlight LED channel to be used.
    + Each bit mapping to:
    + - 0: CH4
    + - 1: CH3
    + - 2: CH2
    + - 3: CH1
    + minimum: 1
    + maximum: 15
    +
    +required:
    + - compatible
    + - mediatek,bled-channel-use
    +
    +additionalProperties: false
    --
    2.25.1
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