Bindings/pinctrl/sprd,sc9860-pinctrl.txt

   1 * Spreadtrum SC9860 Pin Controller
   2
   3 Please refer to sprd,pinctrl.txt in this directory for common binding part
   4 and usage.
   5
   6 Required properties:
   7 - compatible: Must be "sprd,sc9860-pinctrl".
   8 - reg: The register address of pin controller device.
   9 - pins : An array of strings, each string containing the name of a pin.
  10
  11 Optional properties:
  12 - function: A string containing the name of the function, values must be
  13   one of: "func1", "func2", "func3" and "func4".
  14 - drive-strength: Drive strength in mA. Supported values: 2, 4, 6, 8, 10,
  15   12, 14, 16, 20, 21, 24, 25, 27, 29, 31 and 33.
  16 - input-schmitt-disable: Enable schmitt-trigger mode.
  17 - input-schmitt-enable: Disable schmitt-trigger mode.
  18 - bias-disable: Disable pin bias.
  19 - bias-pull-down: Pull down on pin.
  20 - bias-pull-up: Pull up on pin. Supported values: 20000 for pull-up resistor
  21   is 20K and 4700 for pull-up resistor is 4.7K.
  22 - input-enable: Enable pin input.
  23 - input-disable: Enable pin output.
  24 - output-high: Set the pin as an output level high.
  25 - output-low: Set the pin as an output level low.
  26 - sleep-hardware-state: Indicate these configs in this state are sleep related.
  27 - sprd,control: Control values referring to databook for global control pins.
  28 - sprd,sleep-mode: Choose the pin sleep mode, and supported values are:
  29   AP_SLEEP, PUBCP_SLEEP, TGLDSP_SLEEP and AGDSP_SLEEP.
  30
  31 Pin sleep mode definition:
  32 enum pin_sleep_mode {
  33         AP_SLEEP = BIT(0),
  34         PUBCP_SLEEP = BIT(1),
  35         TGLDSP_SLEEP = BIT(2),
  36         AGDSP_SLEEP = BIT(3),
  37 };
  38
  39 Example:
  40 pin_controller: pinctrl@402a0000 {
  41         compatible = "sprd,sc9860-pinctrl";
  42         reg = <0x402a0000 0x10000>;
  43
  44         grp1: sd0 {
  45                 pins = "SC9860_VIO_SD2_IRTE", "SC9860_VIO_SD0_IRTE";
  46                 sprd,control = <0x1>;
  47         };
  48
  49         grp2: rfctl_33 {
  50                 pins = "SC9860_RFCTL33";
  51                 function = "func2";
  52                 sprd,sleep-mode = <AP_SLEEP | PUBCP_SLEEP>;
  53                 grp2_sleep_mode: rfctl_33_sleep {
  54                         pins = "SC9860_RFCTL33";
  55                         sleep-hardware-state;
  56                         output-low;
  57                 }
  58         };
  59
  60         grp3: rfctl_misc_20 {
  61                 pins = "SC9860_RFCTL20_MISC";
  62                 drive-strength = <10>;
  63                 bias-pull-up = <4700>;
  64                 grp3_sleep_mode: rfctl_misc_sleep {
  65                         pins = "SC9860_RFCTL20_MISC";
  66                         sleep-hardware-state;
  67                         bias-pull-up;
  68                 }
  69         };
  70 };