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 7title: Samsung S3C/S5P/Exynos SoC pin controller - pins configuration 8 9maintainers: 10 - Krzysztof Kozlowski <krzk@kernel.org> 11 - Sylwester Nawrocki <s.nawrocki@samsung.com> 12 - Tomasz Figa <tomasz.figa@gmail.com> 13 14description: | 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 27properties: 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 77required: 78 - samsung,pins 79 80additionalProperties: false 81