Documentation/devicetree/bindings/serial/renesas,hscif.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: "http://devicetree.org/schemas/serial/renesas,hscif.yaml#"
   5 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
   6
   7 title: Renesas High Speed Serial Communication Interface with FIFO (HSCIF)
   8
   9 maintainers:
  10   - Geert Uytterhoeven <geert+renesas@glider.be>
  11
  12 allOf:
  13   - $ref: serial.yaml#
  14
  15 properties:
  16   compatible:
  17     oneOf:
  18       - items:
  19           - enum:
  20               - renesas,hscif-r8a7778      # R-Car M1
  21               - renesas,hscif-r8a7779      # R-Car H1
  22           - const: renesas,rcar-gen1-hscif # R-Car Gen1
  23           - const: renesas,hscif           # generic HSCIF compatible UART
  24
  25       - items:
  26           - enum:
  27               - renesas,hscif-r8a7742      # RZ/G1H
  28               - renesas,hscif-r8a7743      # RZ/G1M
  29               - renesas,hscif-r8a7744      # RZ/G1N
  30               - renesas,hscif-r8a7745      # RZ/G1E
  31               - renesas,hscif-r8a77470     # RZ/G1C
  32               - renesas,hscif-r8a7790      # R-Car H2
  33               - renesas,hscif-r8a7791      # R-Car M2-W
  34               - renesas,hscif-r8a7792      # R-Car V2H
  35               - renesas,hscif-r8a7793      # R-Car M2-N
  36               - renesas,hscif-r8a7794      # R-Car E2
  37           - const: renesas,rcar-gen2-hscif # R-Car Gen2 and RZ/G1
  38           - const: renesas,hscif           # generic HSCIF compatible UART
  39
  40       - items:
  41           - enum:
  42               - renesas,hscif-r8a774a1     # RZ/G2M
  43               - renesas,hscif-r8a774b1     # RZ/G2N
  44               - renesas,hscif-r8a774c0     # RZ/G2E
  45               - renesas,hscif-r8a774e1     # RZ/G2H
  46               - renesas,hscif-r8a7795      # R-Car H3
  47               - renesas,hscif-r8a7796      # R-Car M3-W
  48               - renesas,hscif-r8a77961     # R-Car M3-W+
  49               - renesas,hscif-r8a77965     # R-Car M3-N
  50               - renesas,hscif-r8a77970     # R-Car V3M
  51               - renesas,hscif-r8a77980     # R-Car V3H
  52               - renesas,hscif-r8a77990     # R-Car E3
  53               - renesas,hscif-r8a77995     # R-Car D3
  54               - renesas,hscif-r8a779a0     # R-Car V3U
  55           - const: renesas,rcar-gen3-hscif # R-Car Gen3 and RZ/G2
  56           - const: renesas,hscif           # generic HSCIF compatible UART
  57
  58   reg:
  59     maxItems: 1
  60
  61   interrupts:
  62     maxItems: 1
  63
  64   clocks:
  65     minItems: 1
  66     maxItems: 4
  67
  68   clock-names:
  69     minItems: 1
  70     maxItems: 4
  71     items:
  72       enum:
  73         - fck # UART functional clock
  74         - hsck # optional external clock input
  75         - brg_int # optional internal clock source for BRG frequency divider
  76         - scif_clk # optional external clock source for BRG frequency divider
  77
  78   power-domains:
  79     maxItems: 1
  80
  81   resets:
  82     maxItems: 1
  83
  84   dmas:
  85     minItems: 2
  86     maxItems: 4
  87     description:
  88       Must contain a list of pairs of references to DMA specifiers, one for
  89       transmission, and one for reception.
  90
  91   dma-names:
  92     minItems: 2
  93     maxItems: 4
  94     items:
  95       enum:
  96         - tx
  97         - rx
  98
  99 required:
 100   - compatible
 101   - reg
 102   - interrupts
 103   - clocks
 104   - clock-names
 105   - power-domains
 106
 107 unevaluatedProperties: false
 108
 109 if:
 110   properties:
 111     compatible:
 112       contains:
 113         enum:
 114           - renesas,rcar-gen2-hscif
 115           - renesas,rcar-gen3-hscif
 116 then:
 117   required:
 118     - resets
 119
 120 examples:
 121   - |
 122     #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
 123     #include <dt-bindings/interrupt-controller/arm-gic.h>
 124     #include <dt-bindings/power/r8a7795-sysc.h>
 125     aliases {
 126             serial1 = &hscif1;
 127     };
 128
 129     hscif1: serial@e6550000 {
 130             compatible = "renesas,hscif-r8a7795", "renesas,rcar-gen3-hscif",
 131                          "renesas,hscif";
 132             reg = <0xe6550000 96>;
 133             interrupts = <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>;
 134             clocks = <&cpg CPG_MOD 519>, <&cpg CPG_CORE R8A7795_CLK_S3D1>,
 135                      <&scif_clk>;
 136             clock-names = "fck", "brg_int", "scif_clk";
 137             dmas = <&dmac1 0x33>, <&dmac1 0x32>, <&dmac2 0x33>, <&dmac2 0x32>;
 138             dma-names = "tx", "rx", "tx", "rx";
 139             power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
 140             resets = <&cpg 519>;
 141             uart-has-rtscts;
 142     };