Documentation/devicetree/bindings/bus/sun50i-de2-bus.txt

   1 Device tree bindings for Allwinner A64 DE2 bus
   2
   3 The Allwinner A64 DE2 is on a special bus, which needs a SRAM region (SRAM C)
   4 to be claimed for enabling the access.
   5
   6 Required properties:
   7
   8  - compatible:          Should contain "allwinner,sun50i-a64-de2"
   9  - reg:                 A resource specifier for the register space
  10  - #address-cells:      Must be set to 1
  11  - #size-cells:         Must be set to 1
  12  - ranges:              Must be set up to map the address space inside the
  13                         DE2, for the sub-blocks of DE2.
  14  - allwinner,sram:      the SRAM that needs to be claimed
  15
  16 Example:
  17
  18         de2@1000000 {
  19                 compatible = "allwinner,sun50i-a64-de2";
  20                 reg = <0x1000000 0x400000>;
  21                 allwinner,sram = <&de2_sram 1>;
  22                 #address-cells = <1>;
  23                 #size-cells = <1>;
  24                 ranges = <0 0x1000000 0x400000>;
  25
  26                 display_clocks: clock@0 {
  27                         compatible = "allwinner,sun50i-a64-de2-clk";
  28                         reg = <0x0 0x100000>;
  29                         clocks = <&ccu CLK_DE>,
  30                                  <&ccu CLK_BUS_DE>;
  31                         clock-names = "mod",
  32                                       "bus";
  33                         resets = <&ccu RST_BUS_DE>;
  34                         #clock-cells = <1>;
  35                         #reset-cells = <1>;
  36                 };
  37         };