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: true
 46
 47  clock-names: true
 48
 49  resets:
 50    maxItems: 1
 51
 52  power-domains:
 53    maxItems: 1
 54
 55  bus-range:
 56    description: |
 57      The PCI bus number range; as this is a single bus, the range
 58      should be specified as the same value twice.
 59
 60  dma-ranges:
 61    description: |
 62      A single range for the inbound memory region. If not supplied,
 63      defaults to 1GiB at 0x40000000. Note there are hardware restrictions on
 64      the allowed combinations of address and size.
 65    maxItems: 1
 66
 67patternProperties:
 68  '^usb@[0-1],0$':
 69    type: object
 70
 71    description:
 72      This a USB controller PCI device
 73
 74    properties:
 75      reg:
 76        description:
 77          Identify the correct bus, device and function number in the
 78          form <bdf 0 0 0 0>.
 79
 80        items:
 81          minItems: 5
 82          maxItems: 5
 83
 84      phys:
 85        description:
 86          Reference to the USB phy
 87        maxItems: 1
 88
 89      phy-names:
 90        maxItems: 1
 91
 92    required:
 93      - reg
 94      - phys
 95      - phy-names
 96
 97    unevaluatedProperties: false
 98
 99required:
100  - compatible
101  - reg
102  - interrupts
103  - interrupt-map
104  - interrupt-map-mask
105  - clocks
106  - power-domains
107  - bus-range
108  - "#address-cells"
109  - "#size-cells"
110  - "#interrupt-cells"
111
112allOf:
113  - $ref: /schemas/pci/pci-bus.yaml#
114
115  - if:
116      properties:
117        compatible:
118          contains:
119            enum:
120              - renesas,pci-rzn1
121    then:
122      properties:
123        clocks:
124          items:
125            - description: Internal bus clock (AHB) for HOST
126            - description: Internal bus clock (AHB) Power Management
127            - description: PCI clock for USB subsystem
128        clock-names:
129          items:
130            - const: hclkh
131            - const: hclkpm
132            - const: pciclk
133      required:
134        - clock-names
135    else:
136      properties:
137        clocks:
138          items:
139            - description: Device clock
140        clock-names:
141          items:
142            - const: pclk
143      required:
144        - resets
145
146unevaluatedProperties: false
147
148examples:
149  - |
150    #include <dt-bindings/interrupt-controller/arm-gic.h>
151    #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
152    #include <dt-bindings/power/r8a7790-sysc.h>
153
154    pci@ee090000  {
155        compatible = "renesas,pci-r8a7790", "renesas,pci-rcar-gen2";
156        device_type = "pci";
157        reg = <0xee090000 0xc00>,
158              <0xee080000 0x1100>;
159        clocks = <&cpg CPG_MOD 703>;
160        power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
161        resets = <&cpg 703>;
162        interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
163
164        bus-range = <0 0>;
165        #address-cells = <3>;
166        #size-cells = <2>;
167        #interrupt-cells = <1>;
168        ranges = <0x02000000 0 0xee080000 0xee080000 0 0x00010000>;
169        dma-ranges = <0x42000000 0 0x40000000 0x40000000 0 0x40000000>;
170        interrupt-map-mask = <0xf800 0 0 0x7>;
171        interrupt-map = <0x0000 0 0 1 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
172                        <0x0800 0 0 1 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
173                        <0x1000 0 0 2 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
174
175        usb@1,0 {
176            reg = <0x800 0 0 0 0>;
177            phys = <&usb0 0>;
178            phy-names = "usb";
179        };
180
181        usb@2,0 {
182            reg = <0x1000 0 0 0 0>;
183            phys = <&usb0 0>;
184            phy-names = "usb";
185        };
186    };