0001 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/pci/renesas,pci-rcar-gen2.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Renesas AHB to PCI bridge
0008
0009 maintainers:
0010 - Marek Vasut <marek.vasut+renesas@gmail.com>
0011 - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
0012
0013 description: |
0014 This is the bridge used internally to connect the USB controllers to the
0015 AHB. There is one bridge instance per USB port connected to the internal
0016 OHCI and EHCI controllers.
0017
0018 properties:
0019 compatible:
0020 oneOf:
0021 - items:
0022 - enum:
0023 - renesas,pci-r8a7742 # RZ/G1H
0024 - renesas,pci-r8a7743 # RZ/G1M
0025 - renesas,pci-r8a7744 # RZ/G1N
0026 - renesas,pci-r8a7745 # RZ/G1E
0027 - renesas,pci-r8a7790 # R-Car H2
0028 - renesas,pci-r8a7791 # R-Car M2-W
0029 - renesas,pci-r8a7793 # R-Car M2-N
0030 - renesas,pci-r8a7794 # R-Car E2
0031 - const: renesas,pci-rcar-gen2 # R-Car Gen2 and RZ/G1
0032 - items:
0033 - enum:
0034 - renesas,pci-r9a06g032 # RZ/N1D
0035 - const: renesas,pci-rzn1 # RZ/N1
0036
0037 reg:
0038 items:
0039 - description: Operational registers for the OHCI/EHCI controllers.
0040 - description: Bridge configuration and control registers.
0041
0042 interrupts:
0043 maxItems: 1
0044
0045 clocks: true
0046
0047 clock-names: true
0048
0049 resets:
0050 maxItems: 1
0051
0052 power-domains:
0053 maxItems: 1
0054
0055 bus-range:
0056 description: |
0057 The PCI bus number range; as this is a single bus, the range
0058 should be specified as the same value twice.
0059
0060 dma-ranges:
0061 description: |
0062 A single range for the inbound memory region. If not supplied,
0063 defaults to 1GiB at 0x40000000. Note there are hardware restrictions on
0064 the allowed combinations of address and size.
0065 maxItems: 1
0066
0067 patternProperties:
0068 'usb@[0-1],0':
0069 type: object
0070
0071 description:
0072 This a USB controller PCI device
0073
0074 properties:
0075 reg:
0076 description:
0077 Identify the correct bus, device and function number in the
0078 form <bdf 0 0 0 0>.
0079
0080 items:
0081 minItems: 5
0082 maxItems: 5
0083
0084 phys:
0085 description:
0086 Reference to the USB phy
0087 maxItems: 1
0088
0089 phy-names:
0090 maxItems: 1
0091
0092 required:
0093 - reg
0094 - phys
0095 - phy-names
0096
0097 unevaluatedProperties: false
0098
0099 required:
0100 - compatible
0101 - reg
0102 - interrupts
0103 - interrupt-map
0104 - interrupt-map-mask
0105 - clocks
0106 - power-domains
0107 - bus-range
0108 - "#address-cells"
0109 - "#size-cells"
0110 - "#interrupt-cells"
0111
0112 allOf:
0113 - $ref: /schemas/pci/pci-bus.yaml#
0114
0115 - if:
0116 properties:
0117 compatible:
0118 contains:
0119 enum:
0120 - renesas,pci-rzn1
0121 then:
0122 properties:
0123 clocks:
0124 items:
0125 - description: Internal bus clock (AHB) for HOST
0126 - description: Internal bus clock (AHB) Power Management
0127 - description: PCI clock for USB subsystem
0128 clock-names:
0129 items:
0130 - const: hclkh
0131 - const: hclkpm
0132 - const: pciclk
0133 required:
0134 - clock-names
0135 else:
0136 properties:
0137 clocks:
0138 items:
0139 - description: Device clock
0140 clock-names:
0141 items:
0142 - const: pclk
0143 required:
0144 - resets
0145
0146 unevaluatedProperties: false
0147
0148 examples:
0149 - |
0150 #include <dt-bindings/interrupt-controller/arm-gic.h>
0151 #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
0152 #include <dt-bindings/power/r8a7790-sysc.h>
0153
0154 pci@ee090000 {
0155 compatible = "renesas,pci-r8a7790", "renesas,pci-rcar-gen2";
0156 device_type = "pci";
0157 reg = <0xee090000 0xc00>,
0158 <0xee080000 0x1100>;
0159 clocks = <&cpg CPG_MOD 703>;
0160 power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
0161 resets = <&cpg 703>;
0162 interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
0163
0164 bus-range = <0 0>;
0165 #address-cells = <3>;
0166 #size-cells = <2>;
0167 #interrupt-cells = <1>;
0168 ranges = <0x02000000 0 0xee080000 0xee080000 0 0x00010000>;
0169 dma-ranges = <0x42000000 0 0x40000000 0x40000000 0 0x40000000>;
0170 interrupt-map-mask = <0xf800 0 0 0x7>;
0171 interrupt-map = <0x0000 0 0 1 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
0172 <0x0800 0 0 1 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
0173 <0x1000 0 0 2 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
0174
0175 usb@1,0 {
0176 reg = <0x800 0 0 0 0>;
0177 phys = <&usb0 0>;
0178 phy-names = "usb";
0179 };
0180
0181 usb@2,0 {
0182 reg = <0x1000 0 0 0 0>;
0183 phys = <&usb0 0>;
0184 phy-names = "usb";
0185 };
0186 };
