| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/pinctrl/samsung,pinctrl-pins-cfg.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Samsung S3C/S5P/Exynos SoC pin controller - pins configuration |
| 8 | |
| 9 | maintainers: |
| 10 | - Krzysztof Kozlowski <krzk@kernel.org> |
| 11 | - Sylwester Nawrocki <s.nawrocki@samsung.com> |
| 12 | - Tomasz Figa <tomasz.figa@gmail.com> |
| 13 | |
| 14 | description: | |
| 15 | This is a part of device tree bindings for Samsung S3C/S5P/Exynos SoC pin |
| 16 | controller. |
| 17 | |
| 18 | Pins configuration for Samsung S3C/S5P/Exynos SoC pin controller. |
| 19 | |
| 20 | The values used for config properties should be derived from the hardware |
| 21 | manual and these values are programmed as-is into the pin pull up/down and |
| 22 | driver strength register of the pin-controller. |
| 23 | |
| 24 | See also Documentation/devicetree/bindings/pinctrl/samsung,pinctrl.yaml for |
| 25 | additional information and example. |
| 26 | |
| 27 | properties: |
| 28 | samsung,pins: |
| 29 | description: | |
| 30 | List of pins to configure. For initial and sleep states, the maximum |
| 31 | number is one pin. In other cases there is no upper limit. |
| 32 | |
| 33 | The pins should use lowercase names matching hardware manual, e.g. for |
| 34 | GPA0 bank: gpa0-0, gpa0-1, gpa0-2. |
| 35 | $ref: /schemas/types.yaml#/definitions/string-array |
| 36 | |
| 37 | samsung,pin-function: |
| 38 | description: | |
| 39 | The pin function selection that should be applied on the pins listed in the |
| 40 | child node is specified using the "samsung,pin-function" property. The value |
| 41 | of this property that should be applied to each of the pins listed in the |
| 42 | "samsung,pins" property should be picked from the hardware manual of the SoC |
| 43 | for the specified pin group. This property is optional in the child node if |
| 44 | no specific function selection is desired for the pins listed in the child |
| 45 | node. The value of this property is used as-is to program the pin-controller |
| 46 | function selector register of the pin-bank. |
| 47 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 48 | minimum: 0 |
| 49 | maximum: 15 |
| 50 | |
| 51 | samsung,pin-drv: |
| 52 | description: Drive strength configuration. |
| 53 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 54 | minimum: 0 |
| 55 | maximum: 15 |
| 56 | |
| 57 | samsung,pin-pud: |
| 58 | description: Pull up/down configuration. |
| 59 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 60 | enum: [0, 1, 2, 3] |
| 61 | |
| 62 | samsung,pin-val: |
| 63 | description: Initial value of pin output buffer. |
| 64 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 65 | enum: [0, 1] |
| 66 | |
| 67 | samsung,pin-con-pdn: |
| 68 | description: Function in power down mode. |
| 69 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 70 | enum: [0, 1, 2, 3] |
| 71 | |
| 72 | samsung,pin-pud-pdn: |
| 73 | description: Pull up/down configuration in power down mode. |
| 74 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 75 | enum: [0, 1, 2, 3] |
| 76 | |
| 77 | required: |
| 78 | - samsung,pins |
| 79 | |
| 80 | additionalProperties: false |