xref: /linux/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml (revision 3a39d672e7f48b8d6b91a09afa4b55352773b4b5) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pci/renesas,pci-rcar-gen2.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas AHB to PCI bridge
8
9maintainers:
10  - Marek Vasut <marek.vasut+renesas@gmail.com>
11  - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
12
13description: |
14  This is the bridge used internally to connect the USB controllers to the
15  AHB. There is one bridge instance per USB port connected to the internal
16  OHCI and EHCI controllers.
17
18properties:
19  compatible:
20    oneOf:
21      - items:
22          - enum:
23              - renesas,pci-r8a7742      # RZ/G1H
24              - renesas,pci-r8a7743      # RZ/G1M
25              - renesas,pci-r8a7744      # RZ/G1N
26              - renesas,pci-r8a7745      # RZ/G1E
27              - renesas,pci-r8a7790      # R-Car H2
28              - renesas,pci-r8a7791      # R-Car M2-W
29              - renesas,pci-r8a7793      # R-Car M2-N
30              - renesas,pci-r8a7794      # R-Car E2
31          - const: renesas,pci-rcar-gen2 # R-Car Gen2 and RZ/G1
32      - items:
33          - enum:
34              - renesas,pci-r9a06g032     # RZ/N1D
35          - const: renesas,pci-rzn1       # RZ/N1
36
37  reg:
38    items:
39      - description: Operational registers for the OHCI/EHCI controllers.
40      - description: Bridge configuration and control registers.
41
42  interrupts:
43    maxItems: 1
44
45  clocks:
46    minItems: 1
47    maxItems: 3
48
49  clock-names:
50    minItems: 1
51    maxItems: 3
52
53  resets:
54    maxItems: 1
55
56  power-domains:
57    maxItems: 1
58
59  bus-range:
60    description: |
61      The PCI bus number range; as this is a single bus, the range
62      should be specified as the same value twice.
63
64  dma-ranges:
65    description: |
66      A single range for the inbound memory region. If not supplied,
67      defaults to 1GiB at 0x40000000. Note there are hardware restrictions on
68      the allowed combinations of address and size.
69    maxItems: 1
70
71patternProperties:
72  '^usb@[0-1],0$':
73    type: object
74
75    description:
76      This a USB controller PCI device
77
78    properties:
79      reg:
80        description:
81          Identify the correct bus, device and function number in the
82          form <bdf 0 0 0 0>.
83
84        items:
85          minItems: 5
86          maxItems: 5
87
88      phys:
89        description:
90          Reference to the USB phy
91        maxItems: 1
92
93      phy-names:
94        maxItems: 1
95
96    required:
97      - reg
98      - phys
99      - phy-names
100
101    unevaluatedProperties: false
102
103required:
104  - compatible
105  - reg
106  - interrupts
107  - interrupt-map
108  - interrupt-map-mask
109  - clocks
110  - power-domains
111  - bus-range
112  - "#address-cells"
113  - "#size-cells"
114  - "#interrupt-cells"
115
116allOf:
117  - $ref: /schemas/pci/pci-host-bridge.yaml#
118
119  - if:
120      properties:
121        compatible:
122          contains:
123            enum:
124              - renesas,pci-rzn1
125    then:
126      properties:
127        clocks:
128          items:
129            - description: Internal bus clock (AHB) for HOST
130            - description: Internal bus clock (AHB) Power Management
131            - description: PCI clock for USB subsystem
132        clock-names:
133          items:
134            - const: hclkh
135            - const: hclkpm
136            - const: pciclk
137      required:
138        - clock-names
139    else:
140      properties:
141        clocks:
142          items:
143            - description: Device clock
144        clock-names:
145          items:
146            - const: pclk
147      required:
148        - resets
149
150unevaluatedProperties: false
151
152examples:
153  - |
154    #include <dt-bindings/interrupt-controller/arm-gic.h>
155    #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
156    #include <dt-bindings/power/r8a7790-sysc.h>
157
158    pci@ee090000  {
159        compatible = "renesas,pci-r8a7790", "renesas,pci-rcar-gen2";
160        device_type = "pci";
161        reg = <0xee090000 0xc00>,
162              <0xee080000 0x1100>;
163        clocks = <&cpg CPG_MOD 703>;
164        power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
165        resets = <&cpg 703>;
166        interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
167
168        bus-range = <0 0>;
169        #address-cells = <3>;
170        #size-cells = <2>;
171        #interrupt-cells = <1>;
172        ranges = <0x02000000 0 0xee080000 0xee080000 0 0x00010000>;
173        dma-ranges = <0x42000000 0 0x40000000 0x40000000 0 0x40000000>;
174        interrupt-map-mask = <0xf800 0 0 0x7>;
175        interrupt-map = <0x0000 0 0 1 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
176                        <0x0800 0 0 1 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
177                        <0x1000 0 0 2 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
178
179        usb@1,0 {
180            reg = <0x800 0 0 0 0>;
181            phys = <&usb0 0>;
182            phy-names = "usb";
183        };
184
185        usb@2,0 {
186            reg = <0x1000 0 0 0 0>;
187            phys = <&usb0 0>;
188            phy-names = "usb";
189        };
190    };
191