1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/gpio/xlnx,gpio-xilinx.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Xilinx AXI GPIO controller 8 9maintainers: 10 - Neeli Srinivas <srinivas.neeli@amd.com> 11 12description: 13 The AXI GPIO design provides a general purpose input/output interface 14 to an AXI4-Lite interface. The AXI GPIO can be configured as either 15 a single or a dual-channel device. The width of each channel is 16 independently configurable. The channels can be configured to 17 generate an interrupt when a transition on any of their inputs occurs. 18 19properties: 20 compatible: 21 enum: 22 - xlnx,xps-gpio-1.00.a 23 24 reg: 25 maxItems: 1 26 27 "#gpio-cells": 28 const: 2 29 30 interrupts: 31 maxItems: 1 32 33 gpio-controller: true 34 35 gpio-line-names: 36 description: strings describing the names of each gpio line 37 minItems: 1 38 maxItems: 64 39 40 interrupt-controller: true 41 42 "#interrupt-cells": 43 const: 2 44 45 clocks: 46 maxItems: 1 47 48 interrupt-names: true 49 50 xlnx,all-inputs: 51 $ref: /schemas/types.yaml#/definitions/uint32 52 description: This option sets this GPIO channel1 bits in input mode. 53 54 xlnx,all-inputs-2: 55 $ref: /schemas/types.yaml#/definitions/uint32 56 description: This option sets this GPIO channel2 bits in input mode. 57 58 xlnx,all-outputs: 59 $ref: /schemas/types.yaml#/definitions/uint32 60 description: This option sets this GPIO channel1 bits in output mode. 61 62 xlnx,all-outputs-2: 63 $ref: /schemas/types.yaml#/definitions/uint32 64 description: This option sets this GPIO channel2 bits in output mode. 65 66 xlnx,dout-default: 67 $ref: /schemas/types.yaml#/definitions/uint32 68 description: Sets the default value of all the enabled bits of 69 channel1. 70 default: 0 71 72 xlnx,dout-default-2: 73 $ref: /schemas/types.yaml#/definitions/uint32 74 description: Sets the default value of all the enabled bits of 75 channel2. 76 default: 0 77 78 xlnx,gpio-width: 79 $ref: /schemas/types.yaml#/definitions/uint32 80 description: The value defines the bit width of the GPIO channel1. 81 minimum: 1 82 maximum: 32 83 default: 32 84 85 xlnx,gpio2-width: 86 $ref: /schemas/types.yaml#/definitions/uint32 87 description: The value defines the bit width of the GPIO channel2. 88 minimum: 1 89 maximum: 32 90 default: 32 91 92 xlnx,interrupt-present: 93 $ref: /schemas/types.yaml#/definitions/uint32 94 description: This parameter enables interrupt control logic 95 and interrupt registers in GPIO module. 96 minimum: 0 97 maximum: 1 98 default: 0 99 100 xlnx,is-dual: 101 $ref: /schemas/types.yaml#/definitions/uint32 102 description: This parameter enables a second GPIO channel (GPIO2). 103 minimum: 0 104 maximum: 1 105 default: 0 106 107 xlnx,tri-default: 108 $ref: /schemas/types.yaml#/definitions/uint32 109 description: This value configures the input or output mode 110 of each bit of GPIO channel1. 111 112 xlnx,tri-default-2: 113 $ref: /schemas/types.yaml#/definitions/uint32 114 description: This value configures the input or output mode 115 of each bit of GPIO channel2. 116 117required: 118 - reg 119 - compatible 120 - gpio-controller 121 - "#gpio-cells" 122 123unevaluatedProperties: false 124 125examples: 126 - | 127 #include <dt-bindings/interrupt-controller/arm-gic.h> 128 129 gpio@e000a000 { 130 compatible = "xlnx,xps-gpio-1.00.a"; 131 reg = <0xa0020000 0x10000>; 132 #gpio-cells = <2>; 133 #interrupt-cells = <0x2>; 134 clocks = <&zynqmp_clk 71>; 135 gpio-controller; 136 interrupt-controller; 137 interrupt-names = "ip2intc_irpt"; 138 interrupt-parent = <&gic>; 139 interrupts = <0 89 4>; 140 xlnx,all-inputs = <0x0>; 141 xlnx,all-inputs-2 = <0x0>; 142 xlnx,all-outputs = <0x0>; 143 xlnx,all-outputs-2 = <0x0>; 144 xlnx,dout-default = <0x0>; 145 xlnx,dout-default-2 = <0x0>; 146 xlnx,gpio-width = <0x20>; 147 xlnx,gpio2-width = <0x20>; 148 xlnx,interrupt-present = <0x1>; 149 xlnx,is-dual = <0x1>; 150 xlnx,tri-default = <0xFFFFFFFF>; 151 xlnx,tri-default-2 = <0xFFFFFFFF>; 152 }; 153 154... 155