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63 lines
1.7 KiB
63 lines
1.7 KiB
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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