81 lines
2.7 KiB
YAML
81 lines
2.7 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/pinctrl/samsung,pinctrl-pins-cfg.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Samsung S3C/S5P/Exynos SoC pin controller - pins configuration
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maintainers:
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- Krzysztof Kozlowski <krzk@kernel.org>
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- Sylwester Nawrocki <s.nawrocki@samsung.com>
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- Tomasz Figa <tomasz.figa@gmail.com>
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description: |
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This is a part of device tree bindings for Samsung S3C/S5P/Exynos SoC pin
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controller.
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Pins configuration for Samsung S3C/S5P/Exynos SoC pin controller.
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The values used for config properties should be derived from the hardware
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manual and these values are programmed as-is into the pin pull up/down and
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driver strength register of the pin-controller.
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See also Documentation/devicetree/bindings/pinctrl/samsung,pinctrl.yaml for
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additional information and example.
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properties:
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samsung,pins:
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description: |
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List of pins to configure. For initial and sleep states, the maximum
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number is one pin. In other cases there is no upper limit.
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The pins should use lowercase names matching hardware manual, e.g. for
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GPA0 bank: gpa0-0, gpa0-1, gpa0-2.
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$ref: /schemas/types.yaml#/definitions/string-array
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samsung,pin-function:
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description: |
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The pin function selection that should be applied on the pins listed in the
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child node is specified using the "samsung,pin-function" property. The value
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of this property that should be applied to each of the pins listed in the
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"samsung,pins" property should be picked from the hardware manual of the SoC
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for the specified pin group. This property is optional in the child node if
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no specific function selection is desired for the pins listed in the child
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node. The value of this property is used as-is to program the pin-controller
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function selector register of the pin-bank.
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 15
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samsung,pin-drv:
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description: Drive strength configuration.
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 15
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samsung,pin-pud:
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description: Pull up/down configuration.
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 1, 2, 3]
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samsung,pin-val:
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description: Initial value of pin output buffer.
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 1]
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samsung,pin-con-pdn:
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description: Function in power down mode.
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 1, 2, 3]
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samsung,pin-pud-pdn:
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description: Pull up/down configuration in power down mode.
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 1, 2, 3]
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required:
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- samsung,pins
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additionalProperties: false
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