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    SubjectRe: [PATCH v11 2/3] dt-bindings: pinctrl: mt8195: Add mediatek,drive-strength-adv property
    From
    Il 16/02/22 12:31, Tinghan Shen ha scritto:
    > Extend driving support for I2C pins on SoC mt8195.
    > This property is already documented in mediatek,mt8183-pinctrl.yaml.
    >
    > Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
    > Reviewed-by: Rob Herring <robh@kernel.org>

    Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

    > ---
    > .../bindings/pinctrl/pinctrl-mt8195.yaml | 35 +++++++++++++++++++
    > 1 file changed, 35 insertions(+)
    >
    > diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml b/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml
    > index 8299662c2c09..c5b755514c46 100644
    > --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml
    > +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml
    > @@ -98,6 +98,32 @@ patternProperties:
    > drive-strength:
    > enum: [2, 4, 6, 8, 10, 12, 14, 16]
    >
    > + mediatek,drive-strength-adv:
    > + description: |
    > + Describe the specific driving setup property.
    > + For I2C pins, the existing generic driving setup can only support
    > + 2/4/6/8/10/12/14/16mA driving. But in specific driving setup, they
    > + can support 0.125/0.25/0.5/1mA adjustment. If we enable specific
    > + driving setup, the existing generic setup will be disabled.
    > + The specific driving setup is controlled by E1E0EN.
    > + When E1=0/E0=0, the strength is 0.125mA.
    > + When E1=0/E0=1, the strength is 0.25mA.
    > + When E1=1/E0=0, the strength is 0.5mA.
    > + When E1=1/E0=1, the strength is 1mA.
    > + EN is used to enable or disable the specific driving setup.
    > + Valid arguments are described as below:
    > + 0: (E1, E0, EN) = (0, 0, 0)
    > + 1: (E1, E0, EN) = (0, 0, 1)
    > + 2: (E1, E0, EN) = (0, 1, 0)
    > + 3: (E1, E0, EN) = (0, 1, 1)
    > + 4: (E1, E0, EN) = (1, 0, 0)
    > + 5: (E1, E0, EN) = (1, 0, 1)
    > + 6: (E1, E0, EN) = (1, 1, 0)
    > + 7: (E1, E0, EN) = (1, 1, 1)
    > + So the valid arguments are from 0 to 7.
    > + $ref: /schemas/types.yaml#/definitions/uint32
    > + enum: [0, 1, 2, 3, 4, 5, 6, 7]
    > +
    > bias-pull-down:
    > oneOf:
    > - type: boolean
    > @@ -270,4 +296,13 @@ examples:
    > bias-pull-down;
    > };
    > };
    > +
    > + i2c0-pins {
    > + pins {
    > + pinmux = <PINMUX_GPIO8__FUNC_SDA0>,
    > + <PINMUX_GPIO9__FUNC_SCL0>;
    > + bias-disable;
    > + mediatek,drive-strength-adv = <7>;
    > + };
    > + };
    > };

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