Documentation/devicetree/bindings/spi/spi-rspi.txt

   1 Device tree configuration for Renesas RSPI/QSPI driver
   2
   3 Required properties:
   4 - compatible       : For Renesas Serial Peripheral Interface on legacy SH:
   5                      "renesas,rspi-<soctype>", "renesas,rspi" as fallback.
   6                      For Renesas Serial Peripheral Interface on RZ/A1H:
   7                      "renesas,rspi-<soctype>", "renesas,rspi-rz" as fallback.
   8                      For Quad Serial Peripheral Interface on R-Car Gen2:
   9                      "renesas,qspi-<soctype>", "renesas,qspi" as fallback.
  10                      Examples with soctypes are:
  11                         - "renesas,rspi-sh7757" (SH)
  12                         - "renesas,rspi-r7s72100" (RZ/A1H)
  13                         - "renesas,qspi-r8a7790" (R-Car H2)
  14                         - "renesas,qspi-r8a7791" (R-Car M2)
  15 - reg              : Address start and address range size of the device
  16 - interrupts       : A list of interrupt-specifiers, one for each entry in
  17                      interrupt-names.
  18                      If interrupt-names is not present, an interrupt specifier
  19                      for a single muxed interrupt.
  20 - interrupt-names  : A list of interrupt names. Should contain (if present):
  21                        - "error" for SPEI,
  22                        - "rx" for SPRI,
  23                        - "tx" to SPTI,
  24                        - "mux" for a single muxed interrupt.
  25 - interrupt-parent : The phandle for the interrupt controller that
  26                      services interrupts for this device.
  27 - num-cs           : Number of chip selects. Some RSPI cores have more than 1.
  28 - #address-cells   : Must be <1>
  29 - #size-cells      : Must be <0>
  30
  31 Optional properties:
  32 - clocks           : Must contain a reference to the functional clock.
  33
  34 Pinctrl properties might be needed, too.  See
  35 Documentation/devicetree/bindings/pinctrl/renesas,*.
  36
  37 Examples:
  38
  39         spi0: spi@e800c800 {
  40                 compatible = "renesas,rspi-r7s72100", "renesas,rspi-rz";
  41                 reg = <0xe800c800 0x24>;
  42                 interrupts = <0 238 IRQ_TYPE_LEVEL_HIGH>,
  43                              <0 239 IRQ_TYPE_LEVEL_HIGH>,
  44                              <0 240 IRQ_TYPE_LEVEL_HIGH>;
  45                 interrupt-names = "error", "rx", "tx";
  46                 interrupt-parent = <&gic>;
  47                 num-cs = <1>;
  48                 #address-cells = <1>;
  49                 #size-cells = <0>;
  50         };
  51
  52         spi: spi@e6b10000 {
  53                 compatible = "renesas,qspi-r8a7791", "renesas,qspi";
  54                 reg = <0 0xe6b10000 0 0x2c>;
  55                 interrupt-parent = <&gic>;
  56                 interrupts = <0 184 IRQ_TYPE_LEVEL_HIGH>;
  57                 clocks = <&mstp9_clks R8A7791_CLK_QSPI_MOD>;
  58                 num-cs = <1>;
  59                 #address-cells = <1>;
  60                 #size-cells = <0>;
  61         };