0001 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/gpio/ti,omap-gpio.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: OMAP GPIO controller bindings
0008
0009 maintainers:
0010 - Grygorii Strashko <grygorii.strashko@ti.com>
0011
0012 description: |
0013 The general-purpose interface combines general-purpose input/output (GPIO) banks.
0014 Each GPIO banks provides up to 32 dedicated general-purpose pins with input
0015 and output capabilities; interrupt generation in active mode and wake-up
0016 request generation in idle mode upon the detection of external events.
0017
0018 properties:
0019 compatible:
0020 oneOf:
0021 - enum:
0022 - ti,omap2-gpio
0023 - ti,omap3-gpio
0024 - ti,omap4-gpio
0025 - items:
0026 - const: ti,am4372-gpio
0027 - const: ti,omap4-gpio
0028
0029 reg:
0030 maxItems: 1
0031
0032 gpio-controller: true
0033
0034 '#gpio-cells':
0035 const: 2
0036
0037 interrupt-controller: true
0038
0039 '#interrupt-cells':
0040 const: 2
0041
0042 interrupts:
0043 maxItems: 1
0044
0045 gpio-ranges: true
0046
0047 gpio-line-names:
0048 minItems: 1
0049 maxItems: 32
0050
0051 ti,gpio-always-on:
0052 $ref: /schemas/types.yaml#/definitions/flag
0053 description:
0054 Indicates if a GPIO bank is always powered and will never lose its logic state.
0055
0056 ti,hwmods:
0057 $ref: /schemas/types.yaml#/definitions/string
0058 deprecated: true
0059 description:
0060 Name of the hwmod associated with the GPIO. Needed on some legacy OMAP
0061 SoCs which have not been converted to the ti,sysc interconnect hierarachy.
0062
0063 ti,no-reset-on-init:
0064 $ref: /schemas/types.yaml#/definitions/flag
0065 deprecated: true
0066 description:
0067 Do not reset on init. Used with ti,hwmods on some legacy OMAP SoCs which
0068 have not been converted to the ti,sysc interconnect hierarachy.
0069
0070 patternProperties:
0071 "^(.+-hog(-[0-9]+)?)$":
0072 type: object
0073
0074 required:
0075 - gpio-hog
0076
0077 required:
0078 - compatible
0079 - reg
0080 - gpio-controller
0081 - "#gpio-cells"
0082 - interrupt-controller
0083 - "#interrupt-cells"
0084 - interrupts
0085
0086 additionalProperties: false
0087
0088 examples:
0089 - |
0090 #include <dt-bindings/gpio/gpio.h>
0091
0092 gpio0: gpio@0 {
0093 compatible = "ti,omap4-gpio";
0094 reg = <0x0 0x1000>;
0095 gpio-controller;
0096 #gpio-cells = <2>;
0097 interrupt-controller;
0098 #interrupt-cells = <2>;
0099 interrupts = <96>;
0100 ti,gpio-always-on;
0101
0102 ls-buf-en-hog {
0103 gpio-hog;
0104 gpios = <10 GPIO_ACTIVE_HIGH>;
0105 output-high;
0106 line-name = "LS_BUF_EN";
0107 };
0108 };
