Documentation/devicetree/bindings/powerpc/fsl/mpc5121-psc.txt

   1 MPC5121 PSC Device Tree Bindings
   2
   3 PSC in UART mode
   4 ----------------
   5
   6 For PSC in UART mode the needed PSC serial devices
   7 are specified by fsl,mpc5121-psc-uart nodes in the
   8 fsl,mpc5121-immr SoC node. Additionally the PSC FIFO
   9 Controller node fsl,mpc5121-psc-fifo is requered there:
  10
  11 fsl,mpc5121-psc-uart nodes
  12 --------------------------
  13
  14 Required properties :
  15  - compatible : Should contain "fsl,mpc5121-psc-uart" and "fsl,mpc5121-psc"
  16  - cell-index : Index of the PSC in hardware
  17  - reg : Offset and length of the register set for the PSC device
  18  - interrupts : <a b> where a is the interrupt number of the
  19    PSC FIFO Controller and b is a field that represents an
  20    encoding of the sense and level information for the interrupt.
  21  - interrupt-parent : the phandle for the interrupt controller that
  22    services interrupts for this device.
  23
  24 Recommended properties :
  25  - fsl,rx-fifo-size : the size of the RX fifo slice (a multiple of 4)
  26  - fsl,tx-fifo-size : the size of the TX fifo slice (a multiple of 4)
  27
  28
  29 fsl,mpc5121-psc-fifo node
  30 -------------------------
  31
  32 Required properties :
  33  - compatible : Should be "fsl,mpc5121-psc-fifo"
  34  - reg : Offset and length of the register set for the PSC
  35          FIFO Controller
  36  - interrupts : <a b> where a is the interrupt number of the
  37    PSC FIFO Controller and b is a field that represents an
  38    encoding of the sense and level information for the interrupt.
  39  - interrupt-parent : the phandle for the interrupt controller that
  40    services interrupts for this device.
  41
  42
  43 Example for a board using PSC0 and PSC1 devices in serial mode:
  44
  45 serial@11000 {
  46         compatible = "fsl,mpc5121-psc-uart", "fsl,mpc5121-psc";
  47         cell-index = <0>;
  48         reg = <0x11000 0x100>;
  49         interrupts = <40 0x8>;
  50         interrupt-parent = < &ipic >;
  51         fsl,rx-fifo-size = <16>;
  52         fsl,tx-fifo-size = <16>;
  53 };
  54
  55 serial@11100 {
  56         compatible = "fsl,mpc5121-psc-uart", "fsl,mpc5121-psc";
  57         cell-index = <1>;
  58         reg = <0x11100 0x100>;
  59         interrupts = <40 0x8>;
  60         interrupt-parent = < &ipic >;
  61         fsl,rx-fifo-size = <16>;
  62         fsl,tx-fifo-size = <16>;
  63 };
  64
  65 pscfifo@11f00 {
  66         compatible = "fsl,mpc5121-psc-fifo";
  67         reg = <0x11f00 0x100>;
  68         interrupts = <40 0x8>;
  69         interrupt-parent = < &ipic >;
  70 };