Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt

   1 Device tree bindings for ARM PL353 static memory controller
   2
   3 PL353 static memory controller supports two kinds of memory
   4 interfaces.i.e NAND and SRAM/NOR interfaces.
   5 The actual devices are instantiated from the child nodes of pl353 smc node.
   6
   7 Required properties:
   8 - compatible            : Should be "arm,pl353-smc-r2p1", "arm,primecell".
   9 - reg                   : Controller registers map and length.
  10 - clock-names           : List of input clock names - "memclk", "apb_pclk"
  11                           (See clock bindings for details).
  12 - clocks                : Clock phandles (see clock bindings for details).
  13 - address-cells         : Must be 2.
  14 - size-cells            : Must be 1.
  15
  16 Child nodes:
  17  For NAND the "arm,pl353-nand-r2p1" and for NOR the "cfi-flash" drivers are
  18 supported as child nodes.
  19
  20 for NAND partition information please refer the below file
  21 Documentation/devicetree/bindings/mtd/partition.txt
  22
  23 Example:
  24         smcc: memory-controller@e000e000
  25                         compatible = "arm,pl353-smc-r2p1", "arm,primecell";
  26                         clock-names = "memclk", "apb_pclk";
  27                         clocks = <&clkc 11>, <&clkc 44>;
  28                         reg = <0xe000e000 0x1000>;
  29                         #address-cells = <2>;
  30                         #size-cells = <1>;
  31                         ranges = <0x0 0x0 0xe1000000 0x1000000 //Nand CS Region
  32                                   0x1 0x0 0xe2000000 0x2000000 //SRAM/NOR CS Region
  33                                   0x2 0x0 0xe4000000 0x2000000>; //SRAM/NOR CS Region
  34                         nand_0: flash@e1000000 {
  35                                 compatible = "arm,pl353-nand-r2p1"
  36                                 reg = <0 0 0x1000000>;
  37                                 (...)
  38                         };
  39                         nor0: flash@e2000000 {
  40                                 compatible = "cfi-flash";
  41                                 reg = <1 0 0x2000000>;
  42                         };
  43                         nor1: flash@e4000000 {
  44                                 compatible = "cfi-flash";
  45                                 reg = <2 0 0x2000000>;
  46                         };
  47         };