1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/pinctrl/samsung,pinctrl-pins-cfg.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Samsung S3C/S5P/Exynos SoC pin controller - pins configuration
10 - Krzysztof Kozlowski <krzk@kernel.org>
11 - Sylwester Nawrocki <s.nawrocki@samsung.com>
12 - Tomasz Figa <tomasz.figa@gmail.com>
15 This is a part of device tree bindings for Samsung S3C/S5P/Exynos SoC pin
18 Pins configuration for Samsung S3C/S5P/Exynos SoC pin controller.
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 See also include/dt-bindings/pinctrl/samsung.h with useful constants.
25 See also Documentation/devicetree/bindings/pinctrl/samsung,pinctrl.yaml for
26 additional information and example.
31 List of pins to configure. For initial and sleep states, the maximum
32 number is one pin. In other cases there is no upper limit.
34 The pins should use lowercase names matching hardware manual, e.g. for
35 GPA0 bank: gpa0-0, gpa0-1, gpa0-2.
36 $ref: /schemas/types.yaml#/definitions/string-array
40 The pin function selection that should be applied on the pins listed in the
41 child node is specified using the "samsung,pin-function" property. The value
42 of this property that should be applied to each of the pins listed in the
43 "samsung,pins" property should be picked from the hardware manual of the SoC
44 for the specified pin group. This property is optional in the child node if
45 no specific function selection is desired for the pins listed in the child
46 node. The value of this property is used as-is to program the pin-controller
47 function selector register of the pin-bank.
48 $ref: /schemas/types.yaml#/definitions/uint32
53 description: Drive strength configuration.
54 $ref: /schemas/types.yaml#/definitions/uint32
59 description: Pull up/down configuration.
60 $ref: /schemas/types.yaml#/definitions/uint32
64 description: Initial value of pin output buffer.
65 $ref: /schemas/types.yaml#/definitions/uint32
69 description: Function in power down mode.
70 $ref: /schemas/types.yaml#/definitions/uint32
74 description: Pull up/down configuration in power down mode.
75 $ref: /schemas/types.yaml#/definitions/uint32
81 additionalProperties: false