xref: /freebsd/sys/contrib/device-tree/Bindings/pci/brcm,stb-pcie.yaml (revision 8ddb146abcdf061be9f2c0db7e391697dafad85c) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pci/brcm,stb-pcie.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Brcmstb PCIe Host Controller Device Tree Bindings
8
9maintainers:
10  - Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
11
12properties:
13  compatible:
14    items:
15      - enum:
16          - brcm,bcm2711-pcie # The Raspberry Pi 4
17          - brcm,bcm4908-pcie
18          - brcm,bcm7211-pcie # Broadcom STB version of RPi4
19          - brcm,bcm7278-pcie # Broadcom 7278 Arm
20          - brcm,bcm7216-pcie # Broadcom 7216 Arm
21          - brcm,bcm7445-pcie # Broadcom 7445 Arm
22          - brcm,bcm7425-pcie # Broadcom 7425 MIPs
23          - brcm,bcm7435-pcie # Broadcom 7435 MIPs
24
25  reg:
26    maxItems: 1
27
28  interrupts:
29    minItems: 1
30    items:
31      - description: PCIe host controller
32      - description: builtin MSI controller
33
34  interrupt-names:
35    minItems: 1
36    items:
37      - const: pcie
38      - const: msi
39
40  ranges:
41    minItems: 1
42    maxItems: 4
43
44  dma-ranges:
45    minItems: 1
46    maxItems: 6
47
48  clocks:
49    maxItems: 1
50
51  clock-names:
52    items:
53      - const: sw_pcie
54
55  msi-controller:
56    description: Identifies the node as an MSI controller.
57
58  msi-parent:
59    description: MSI controller the device is capable of using.
60
61  brcm,enable-ssc:
62    description: Indicates usage of spread-spectrum clocking.
63    type: boolean
64
65  aspm-no-l0s: true
66
67  brcm,scb-sizes:
68    description: u64 giving the 64bit PCIe memory
69      viewport size of a memory controller.  There may be up to
70      three controllers, and each size must be a power of two
71      with a size greater or equal to the amount of memory the
72      controller supports.  Note that each memory controller
73      may have two component regions -- base and extended -- so
74      this information cannot be deduced from the dma-ranges.
75    $ref: /schemas/types.yaml#/definitions/uint64-array
76    items:
77      minItems: 1
78      maxItems: 3
79
80required:
81  - compatible
82  - reg
83  - ranges
84  - dma-ranges
85  - "#interrupt-cells"
86  - interrupts
87  - interrupt-names
88  - interrupt-map-mask
89  - interrupt-map
90  - msi-controller
91
92allOf:
93  - $ref: /schemas/pci/pci-bus.yaml#
94  - $ref: /schemas/interrupt-controller/msi-controller.yaml#
95  - if:
96      properties:
97        compatible:
98          contains:
99            const: brcm,bcm4908-pcie
100    then:
101      properties:
102        resets:
103          items:
104            - description: reset controller handling the PERST# signal
105
106        reset-names:
107          items:
108            - const: perst
109
110      required:
111        - resets
112        - reset-names
113  - if:
114      properties:
115        compatible:
116          contains:
117            const: brcm,bcm7216-pcie
118    then:
119      properties:
120        resets:
121          items:
122            - description: phandle pointing to the RESCAL reset controller
123
124        reset-names:
125          items:
126            - const: rescal
127
128      required:
129        - resets
130        - reset-names
131
132unevaluatedProperties: false
133
134examples:
135  - |
136    #include <dt-bindings/interrupt-controller/irq.h>
137    #include <dt-bindings/interrupt-controller/arm-gic.h>
138
139    scb {
140            #address-cells = <2>;
141            #size-cells = <1>;
142            pcie0: pcie@7d500000 {
143                    compatible = "brcm,bcm2711-pcie";
144                    reg = <0x0 0x7d500000 0x9310>;
145                    device_type = "pci";
146                    #address-cells = <3>;
147                    #size-cells = <2>;
148                    #interrupt-cells = <1>;
149                    interrupts = <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>,
150                                 <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>;
151                    interrupt-names = "pcie", "msi";
152                    interrupt-map-mask = <0x0 0x0 0x0 0x7>;
153                    interrupt-map = <0 0 0 1 &gicv2 GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH
154                                     0 0 0 2 &gicv2 GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH
155                                     0 0 0 3 &gicv2 GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH
156                                     0 0 0 4 &gicv2 GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>;
157
158                    msi-parent = <&pcie0>;
159                    msi-controller;
160                    ranges = <0x02000000 0x0 0xf8000000 0x6 0x00000000 0x0 0x04000000>;
161                    dma-ranges = <0x42000000 0x1 0x00000000 0x0 0x40000000 0x0 0x80000000>,
162                                 <0x42000000 0x1 0x80000000 0x3 0x00000000 0x0 0x80000000>;
163                    brcm,enable-ssc;
164                    brcm,scb-sizes =  <0x0000000080000000 0x0000000080000000>;
165
166                    /* PCIe bridge, Root Port */
167                    pci@0,0 {
168                            #address-cells = <3>;
169                            #size-cells = <2>;
170                            reg = <0x0 0x0 0x0 0x0 0x0>;
171                            compatible = "pciclass,0604";
172                            device_type = "pci";
173                            vpcie3v3-supply = <&vreg7>;
174                            ranges;
175
176                            /* PCIe endpoint */
177                            pci-ep@0,0 {
178                                    assigned-addresses =
179                                        <0x82010000 0x0 0xf8000000 0x6 0x00000000 0x0 0x2000>;
180                                    reg = <0x0 0x0 0x0 0x0 0x0>;
181                                    compatible = "pci14e4,1688";
182                            };
183                    };
184            };
185    };
186