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