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* Spreadtrum SC9860 Pin Controller
Please refer to sprd,pinctrl.txt in this directory for common binding part
and usage.
Required properties:
- compatible: Must be "sprd,sc9860-pinctrl".
- reg: The register address of pin controller device.
- pins : An array of strings, each string containing the name of a pin.
Optional properties:
- function: A string containing the name of the function, values must be
one of: "func1", "func2", "func3" and "func4".
- drive-strength: Drive strength in mA. Supported values: 2, 4, 6, 8, 10,
12, 14, 16, 20, 21, 24, 25, 27, 29, 31 and 33.
- input-schmitt-disable: Enable schmitt-trigger mode.
- input-schmitt-enable: Disable schmitt-trigger mode.
- bias-disable: Disable pin bias.
- bias-pull-down: Pull down on pin.
- bias-pull-up: Pull up on pin. Supported values: 20000 for pull-up resistor
is 20K and 4700 for pull-up resistor is 4.7K.
- input-enable: Enable pin input.
- input-disable: Enable pin output.
- output-high: Set the pin as an output level high.
- output-low: Set the pin as an output level low.
- sleep-hardware-state: Indicate these configs in this state are sleep related.
- sprd,control: Control values referring to databook for global control pins.
- sprd,sleep-mode: Choose the pin sleep mode, and supported values are:
AP_SLEEP, PUBCP_SLEEP, TGLDSP_SLEEP and AGDSP_SLEEP.
Pin sleep mode definition:
enum pin_sleep_mode {
AP_SLEEP = BIT(0),
PUBCP_SLEEP = BIT(1),
TGLDSP_SLEEP = BIT(2),
AGDSP_SLEEP = BIT(3),
};
Example:
pin_controller: pinctrl@402a0000 {
compatible = "sprd,sc9860-pinctrl";
reg = <0x402a0000 0x10000>;
grp1: sd0 {
pins = "SC9860_VIO_SD2_IRTE", "SC9860_VIO_SD0_IRTE";
sprd,control = <0x1>;
};
grp2: rfctl_33 {
pins = "SC9860_RFCTL33";
function = "func2";
sprd,sleep-mode = <AP_SLEEP | PUBCP_SLEEP>;
grp2_sleep_mode: rfctl_33_sleep {
pins = "SC9860_RFCTL33";
sleep-hardware-state;
output-low;
}
};
grp3: rfctl_misc_20 {
pins = "SC9860_RFCTL20_MISC";
drive-strength = <10>;
bias-pull-up = <4700>;
grp3_sleep_mode: rfctl_misc_sleep {
pins = "SC9860_RFCTL20_MISC";
sleep-hardware-state;
bias-pull-up;
}
};
};
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