renesas,rspi.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/spi/renesas,rspi.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Renesas (Quad) Serial Peripheral Interface (RSPI/QSPI)
    8 
    9 maintainers:
   10   - Geert Uytterhoeven <geert+renesas@glider.be>
   11 
   12 properties:
   13   compatible:
   14     oneOf:
   15       - items:
   16           - enum:
   17               - renesas,rspi-sh7757    # SH7757
   18           - const: renesas,rspi        # Legacy SH
   19 
   20       - items:
   21           - enum:
   22               - renesas,rspi-r7s72100  # RZ/A1H
   23               - renesas,rspi-r7s9210   # RZ/A2
   24               - renesas,r9a07g043-rspi # RZ/G2UL
   25               - renesas,r9a07g044-rspi # RZ/G2{L,LC}
   26               - renesas,r9a07g054-rspi # RZ/V2L
   27           - const: renesas,rspi-rz
   28 
   29       - items:
   30           - enum:
   31               - renesas,qspi-r8a7742   # RZ/G1H
   32               - renesas,qspi-r8a7743   # RZ/G1M
   33               - renesas,qspi-r8a7744   # RZ/G1N
   34               - renesas,qspi-r8a7745   # RZ/G1E
   35               - renesas,qspi-r8a77470  # RZ/G1C
   36               - renesas,qspi-r8a7790   # R-Car H2
   37               - renesas,qspi-r8a7791   # R-Car M2-W
   38               - renesas,qspi-r8a7792   # R-Car V2H
   39               - renesas,qspi-r8a7793   # R-Car M2-N
   40               - renesas,qspi-r8a7794   # R-Car E2
   41           - const: renesas,qspi        # R-Car Gen2 and RZ/G1
   42 
   43   reg:
   44     maxItems: 1
   45 
   46   interrupts:
   47     oneOf:
   48       - items:
   49           - description: A combined interrupt
   50       - items:
   51           - description: Error interrupt (SPEI)
   52           - description: Receive Interrupt (SPRI)
   53           - description: Transmit Interrupt (SPTI)
   54 
   55   interrupt-names:
   56     oneOf:
   57       - items:
   58           - const: mux
   59       - items:
   60           - const: error
   61           - const: rx
   62           - const: tx
   63 
   64   clocks:
   65     maxItems: 1
   66 
   67   power-domains:
   68     maxItems: 1
   69 
   70   resets:
   71     maxItems: 1
   72 
   73   dmas:
   74     minItems: 2
   75     maxItems: 4
   76     description:
   77       Must contain a list of pairs of references to DMA specifiers, one for
   78       transmission, and one for reception.
   79 
   80   dma-names:
   81     minItems: 2
   82     maxItems: 4
   83     items:
   84       enum:
   85         - tx
   86         - rx
   87 
   88   num-cs:
   89     description: |
   90       Total number of native chip selects.
   91       Hardware limitations related to chip selects:
   92         - When using GPIO chip selects, at least one native chip select must
   93           be left unused, as it will be driven anyway.
   94     minimum: 1
   95     maximum: 2
   96     default: 1
   97 
   98 required:
   99   - compatible
  100   - reg
  101   - interrupts
  102   - clocks
  103   - power-domains
  104   - '#address-cells'
  105   - '#size-cells'
  106 
  107 allOf:
  108   - $ref: spi-controller.yaml#
  109   - if:
  110       properties:
  111         compatible:
  112           contains:
  113             enum:
  114               - renesas,rspi-rz
  115     then:
  116       properties:
  117         interrupts:
  118           minItems: 3
  119       required:
  120         - interrupt-names
  121 
  122   - if:
  123       properties:
  124         compatible:
  125           contains:
  126             enum:
  127               - renesas,qspi
  128               - renesas,r9a07g043-rspi
  129               - renesas,r9a07g044-rspi
  130               - renesas,r9a07g054-rspi
  131     then:
  132       required:
  133         - resets
  134 
  135 unevaluatedProperties: false
  136 
  137 examples:
  138   - |
  139     #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
  140     #include <dt-bindings/interrupt-controller/arm-gic.h>
  141     #include <dt-bindings/power/r8a7791-sysc.h>
  142 
  143     qspi: spi@e6b10000 {
  144             compatible = "renesas,qspi-r8a7791", "renesas,qspi";
  145             reg = <0xe6b10000 0x2c>;
  146             interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
  147             clocks = <&cpg CPG_MOD 917>;
  148             dmas = <&dmac0 0x17>, <&dmac0 0x18>, <&dmac1 0x17>, <&dmac1 0x18>;
  149             dma-names = "tx", "rx", "tx", "rx";
  150             power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
  151             resets = <&cpg 917>;
  152             num-cs = <1>;
  153             #address-cells = <1>;
  154             #size-cells = <0>;
  155     };

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sys/contrib/device-tree/Bindings/spi/renesas,rspi.yaml