1 # SPDX-License-Identifier: GPL-2.0
4 $id: http://devicetree.org/schemas/interrupt-controller/arm,gic-v3.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ARM Generic Interrupt Controller, version 3
10 - Marc Zyngier <marc.zyngier@arm.com>
13 AArch64 SMP cores are often associated with a GICv3, providing Private
14 Peripheral Interrupts (PPI), Shared Peripheral Interrupts (SPI),
15 Software Generated Interrupts (SGI), and Locality-specific Peripheral
19 - $ref: /schemas/interrupt-controller.yaml#
30 interrupt-controller: true
41 Specifies the number of cells needed to encode an interrupt source.
42 Must be a single cell with a value of at least 3.
43 If the system requires describing PPI affinity, then the value must
46 The 1st cell is the interrupt type; 0 for SPI interrupts, 1 for PPI
47 interrupts, 2 for interrupts in the Extended SPI range, 3 for the
48 Extended PPI range. Other values are reserved for future use.
50 The 2nd cell contains the interrupt number for the interrupt type.
51 SPI interrupts are in the range [0-987]. PPI interrupts are in the
52 range [0-15]. Extented SPI interrupts are in the range [0-1023].
53 Extended PPI interrupts are in the range [0-127].
55 The 3rd cell is the flags, encoded as follows:
56 bits[3:0] trigger type and level flags.
60 The 4th cell is a phandle to a node describing a set of CPUs this
61 interrupt is affine to. The interrupt must be a PPI, and the node
62 pointed must be a subnode of the "ppi-partitions" subnode. For
63 interrupt types other than PPI or PPIs that are not partitionned,
64 this cell must be zero. See the "ppi-partitions" node description
67 Cells 5 and beyond are reserved for future use and must have a value
73 Specifies base physical address(s) and size of the GIC
74 registers, in the following order:
75 - GIC Distributor interface (GICD)
76 - GIC Redistributors (GICR), one range per redistributor region
77 - GIC CPU interface (GICC)
78 - GIC Hypervisor interface (GICH)
79 - GIC Virtual CPU interface (GICV)
81 GICC, GICH and GICV are optional.
83 maxItems: 4096 # Should be enough?
87 Interrupt source of the VGIC maintenance interrupt.
92 If using padding pages, specifies the stride of consecutive
93 redistributors. Must be a multiple of 64kB.
95 - $ref: /schemas/types.yaml#/definitions/uint64
99 "#redistributor-regions":
101 The number of independent contiguous regions occupied by the
102 redistributors. Required if more than one such region is present.
104 - $ref: /schemas/types.yaml#/definitions/uint32
105 - maximum: 4096 # Should be enough?
109 Only present if the Message Based Interrupt functionnality is
110 being exposed by the HW, and the mbi-ranges property present.
114 A list of pairs <intid span>, where "intid" is the first SPI of a range
115 that can be used an MBI, and "span" the size of that range. Multiple
116 ranges can be provided.
118 - $ref: /schemas/types.yaml#/definitions/uint32-matrix
125 Address property. Base address of an alias of the GICD region containing
126 only the {SET,CLR}SPI registers to be used if isolation is required,
127 and if supported by the HW.
129 - $ref: /schemas/types.yaml#/definitions/uint32-array
137 PPI affinity can be expressed as a single "ppi-partitions" node,
138 containing a set of sub-nodes.
140 "^interrupt-partition-[0-9]+$":
143 $ref: /schemas/types.yaml#/definitions/phandle-array
145 Should be a list of phandles to CPU nodes (as described in
146 Documentation/devicetree/bindings/arm/cpus.yaml).
152 mbi-ranges: [ msi-controller ]
153 msi-controller: [ mbi-ranges ]
162 "^interrupt-controller@[0-9a-f]+$": false
163 # msi-controller is preferred, but allow other names
164 "^(msi-controller|gic-its|interrupt-controller)@[0-9a-f]+$":
167 GICv3 has one or more Interrupt Translation Services (ITS) that are
168 used to route Message Signalled Interrupts (MSI) to the CPUs.
171 const: arm,gic-v3-its
177 The single msi-cell is the DeviceID of the device which will generate
183 Specifies the base physical address and size of the ITS registers.
186 socionext,synquacer-pre-its:
188 (u32, u32) tuple describing the untranslated
189 address and size of the pre-ITS window.
191 - $ref: /schemas/types.yaml#/definitions/uint32-array
202 additionalProperties: false
204 additionalProperties: false
208 gic: interrupt-controller@2cf00000 {
209 compatible = "arm,gic-v3";
210 #interrupt-cells = <3>;
211 #address-cells = <1>;
214 interrupt-controller;
215 reg = <0x2f000000 0x10000>, // GICD
216 <0x2f100000 0x200000>, // GICR
217 <0x2c000000 0x2000>, // GICC
218 <0x2c010000 0x2000>, // GICH
219 <0x2c020000 0x2000>; // GICV
220 interrupts = <1 9 4>;
223 mbi-ranges = <256 128>;
225 msi-controller@2c200000 {
226 compatible = "arm,gic-v3-its";
229 reg = <0x2c200000 0x20000>;
233 interrupt-controller@2c010000 {
234 compatible = "arm,gic-v3";
235 #interrupt-cells = <4>;
236 #address-cells = <1>;
239 interrupt-controller;
240 redistributor-stride = <0x0 0x40000>; // 256kB stride
241 #redistributor-regions = <2>;
242 reg = <0x2c010000 0x10000>, // GICD
243 <0x2d000000 0x800000>, // GICR 1: CPUs 0-31
244 <0x2e000000 0x800000>, // GICR 2: CPUs 32-63
245 <0x2c040000 0x2000>, // GICC
246 <0x2c060000 0x2000>, // GICH
247 <0x2c080000 0x2000>; // GICV
248 interrupts = <1 9 4>;
250 msi-controller@2c200000 {
251 compatible = "arm,gic-v3-its";
254 reg = <0x2c200000 0x20000>;
257 msi-controller@2c400000 {
258 compatible = "arm,gic-v3-its";
261 reg = <0x2c400000 0x20000>;
265 part0: interrupt-partition-0 {
266 affinity = <&cpu0 &cpu2>;
269 part1: interrupt-partition-1 {
270 affinity = <&cpu1 &cpu3>;
278 interrupts = <1 1 4 &part0>;