64 lines
1.7 KiB
Plaintext
64 lines
1.7 KiB
Plaintext
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Pincontrol driver for RK805 Power management IC.
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RK805 has 2 pins which can be configured as GPIO output only.
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Please refer file <devicetree/bindings/pinctrl/pinctrl-bindings.txt>
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for details of the common pinctrl bindings used by client devices,
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including the meaning of the phrase "pin configuration node".
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Optional Pinmux properties:
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--------------------------
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Following properties are required if default setting of pins are required
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at boot.
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- pinctrl-names: A pinctrl state named per <pinctrl-bindings.txt>.
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- pinctrl[0...n]: Properties to contain the phandle for pinctrl states per
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<pinctrl-bindings.txt>.
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The pin configurations are defined as child of the pinctrl states node. Each
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sub-node have following properties:
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Required properties:
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------------------
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- #gpio-cells: Should be two. The first cell is the pin number and the
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second is the GPIO flags.
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- gpio-controller: Marks the device node as a GPIO controller.
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- pins: List of pins. Valid values of pins properties are: gpio0, gpio1.
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First 2 properties must be added in the RK805 PMIC node, documented in
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Documentation/devicetree/bindings/mfd/rockchip,rk808.yaml
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Optional properties:
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-------------------
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Following are optional properties defined as pinmux DT binding document
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<pinctrl-bindings.txt>. Absence of properties will leave the configuration
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on default.
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function,
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output-low,
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output-high.
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Valid values for function properties are: gpio.
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Theres is also not customised properties for any GPIO.
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Example:
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--------
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rk805: rk805@18 {
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compatible = "rockchip,rk805";
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...
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gpio-controller;
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#gpio-cells = <2>;
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pinctrl-names = "default";
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pinctrl-0 = <&pmic_int_l>, <&rk805_default>;
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rk805_default: pinmux {
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gpio01 {
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pins = "gpio0", "gpio1";
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function = "gpio";
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output-high;
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};
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};
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};
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