| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | }; |