Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt

   1 Bindings for HyperBus Memory Controller (HBMC) on TI's K3 family of SoCs
   2
   3 Required properties:
   4 - compatible : "ti,am654-hbmc" for AM654 SoC
   5 - reg : Two entries:
   6         First entry pointed to the register space of HBMC controller
   7         Second entry pointing to the memory map region dedicated for
   8         MMIO access to attached flash devices
   9 - ranges : Address translation from offset within CS to allocated MMIO
  10            space in SoC
  11
  12 Optional properties:
  13 - mux-controls : phandle to the multiplexer that controls selection of
  14                  HBMC vs OSPI inside Flash SubSystem (FSS). Default is OSPI,
  15                  if property is absent.
  16                  See Documentation/devicetree/bindings/mux/reg-mux.txt
  17                  for mmio-mux binding details
  18
  19 Example:
  20
  21         system-controller@47000000 {
  22                 compatible = "syscon", "simple-mfd";
  23                 reg = <0x0 0x47000000 0x0 0x100>;
  24                 #address-cells = <2>;
  25                 #size-cells = <2>;
  26                 ranges;
  27
  28                 hbmc_mux: multiplexer {
  29                         compatible = "mmio-mux";
  30                         #mux-control-cells = <1>;
  31                         mux-reg-masks = <0x4 0x2>; /* 0: reg 0x4, bit 1 */
  32                 };
  33         };
  34
  35         hbmc: hyperbus@47034000 {
  36                 compatible = "ti,am654-hbmc";
  37                 reg = <0x0 0x47034000 0x0 0x100>,
  38                         <0x5 0x00000000 0x1 0x0000000>;
  39                 power-domains = <&k3_pds 55>;
  40                 #address-cells = <2>;
  41                 #size-cells = <1>;
  42                 ranges = <0x0 0x0 0x5 0x00000000 0x4000000>, /* CS0 - 64MB */
  43                          <0x1 0x0 0x5 0x04000000 0x4000000>; /* CS1 - 64MB */
  44                 mux-controls = <&hbmc_mux 0>;
  45
  46                 /* Slave flash node */
  47                 flash@0,0 {
  48                         compatible = "cypress,hyperflash", "cfi-flash";
  49                         reg = <0x0 0x0 0x4000000>;
  50                 };
  51         };