0001 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/spi/renesas,rspi.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Renesas (Quad) Serial Peripheral Interface (RSPI/QSPI)
0008
0009 maintainers:
0010 - Geert Uytterhoeven <geert+renesas@glider.be>
0011
0012 properties:
0013 compatible:
0014 oneOf:
0015 - items:
0016 - enum:
0017 - renesas,rspi-sh7757 # SH7757
0018 - const: renesas,rspi # Legacy SH
0019
0020 - items:
0021 - enum:
0022 - renesas,rspi-r7s72100 # RZ/A1H
0023 - renesas,rspi-r7s9210 # RZ/A2
0024 - renesas,r9a07g043-rspi # RZ/G2UL
0025 - renesas,r9a07g044-rspi # RZ/G2{L,LC}
0026 - renesas,r9a07g054-rspi # RZ/V2L
0027 - const: renesas,rspi-rz
0028
0029 - items:
0030 - enum:
0031 - renesas,qspi-r8a7742 # RZ/G1H
0032 - renesas,qspi-r8a7743 # RZ/G1M
0033 - renesas,qspi-r8a7744 # RZ/G1N
0034 - renesas,qspi-r8a7745 # RZ/G1E
0035 - renesas,qspi-r8a77470 # RZ/G1C
0036 - renesas,qspi-r8a7790 # R-Car H2
0037 - renesas,qspi-r8a7791 # R-Car M2-W
0038 - renesas,qspi-r8a7792 # R-Car V2H
0039 - renesas,qspi-r8a7793 # R-Car M2-N
0040 - renesas,qspi-r8a7794 # R-Car E2
0041 - const: renesas,qspi # R-Car Gen2 and RZ/G1
0042
0043 reg:
0044 maxItems: 1
0045
0046 interrupts:
0047 oneOf:
0048 - items:
0049 - description: A combined interrupt
0050 - items:
0051 - description: Error interrupt (SPEI)
0052 - description: Receive Interrupt (SPRI)
0053 - description: Transmit Interrupt (SPTI)
0054
0055 interrupt-names:
0056 oneOf:
0057 - items:
0058 - const: mux
0059 - items:
0060 - const: error
0061 - const: rx
0062 - const: tx
0063
0064 clocks:
0065 maxItems: 1
0066
0067 power-domains:
0068 maxItems: 1
0069
0070 resets:
0071 maxItems: 1
0072
0073 dmas:
0074 minItems: 2
0075 maxItems: 4
0076 description:
0077 Must contain a list of pairs of references to DMA specifiers, one for
0078 transmission, and one for reception.
0079
0080 dma-names:
0081 minItems: 2
0082 maxItems: 4
0083 items:
0084 enum:
0085 - tx
0086 - rx
0087
0088 num-cs:
0089 description: |
0090 Total number of native chip selects.
0091 Hardware limitations related to chip selects:
0092 - When using GPIO chip selects, at least one native chip select must
0093 be left unused, as it will be driven anyway.
0094 minimum: 1
0095 maximum: 2
0096 default: 1
0097
0098 required:
0099 - compatible
0100 - reg
0101 - interrupts
0102 - clocks
0103 - power-domains
0104 - '#address-cells'
0105 - '#size-cells'
0106
0107 allOf:
0108 - $ref: spi-controller.yaml#
0109 - if:
0110 properties:
0111 compatible:
0112 contains:
0113 enum:
0114 - renesas,rspi-rz
0115 then:
0116 properties:
0117 interrupts:
0118 minItems: 3
0119 required:
0120 - interrupt-names
0121
0122 - if:
0123 properties:
0124 compatible:
0125 contains:
0126 enum:
0127 - renesas,qspi
0128 - renesas,r9a07g043-rspi
0129 - renesas,r9a07g044-rspi
0130 - renesas,r9a07g054-rspi
0131 then:
0132 required:
0133 - resets
0134
0135 unevaluatedProperties: false
0136
0137 examples:
0138 - |
0139 #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
0140 #include <dt-bindings/interrupt-controller/arm-gic.h>
0141 #include <dt-bindings/power/r8a7791-sysc.h>
0142
0143 qspi: spi@e6b10000 {
0144 compatible = "renesas,qspi-r8a7791", "renesas,qspi";
0145 reg = <0xe6b10000 0x2c>;
0146 interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
0147 clocks = <&cpg CPG_MOD 917>;
0148 dmas = <&dmac0 0x17>, <&dmac0 0x18>, <&dmac1 0x17>, <&dmac1 0x18>;
0149 dma-names = "tx", "rx", "tx", "rx";
0150 power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
0151 resets = <&cpg 917>;
0152 num-cs = <1>;
0153 #address-cells = <1>;
0154 #size-cells = <0>;
0155 };
