usb-ehci.txt 1.4 KB

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  1. USB EHCI controllers
  2. Required properties:
  3. - compatible : should be "generic-ehci".
  4. - reg : should contain at least address and length of the standard EHCI
  5. register set for the device. Optional platform-dependent registers
  6. (debug-port or other) can be also specified here, but only after
  7. definition of standard EHCI registers.
  8. - interrupts : one EHCI interrupt should be described here.
  9. Optional properties:
  10. - big-endian-regs : boolean, set this for hcds with big-endian registers
  11. - big-endian-desc : boolean, set this for hcds with big-endian descriptors
  12. - big-endian : boolean, for hcds with big-endian-regs + big-endian-desc
  13. - needs-reset-on-resume : boolean, set this to force EHCI reset after resume
  14. - has-transaction-translator : boolean, set this if EHCI have a Transaction
  15. Translator built into the root hub.
  16. - clocks : a list of phandle + clock specifier pairs
  17. - phys : phandle + phy specifier pair
  18. - phy-names : "usb"
  19. - resets : phandle + reset specifier pair
  20. Example (Sequoia 440EPx):
  21. ehci@e0000300 {
  22. compatible = "ibm,usb-ehci-440epx", "usb-ehci";
  23. interrupt-parent = <&UIC0>;
  24. interrupts = <1a 4>;
  25. reg = <0 e0000300 90 0 e0000390 70>;
  26. big-endian;
  27. };
  28. Example (Allwinner sun4i A10 SoC):
  29. ehci0: usb@01c14000 {
  30. compatible = "allwinner,sun4i-a10-ehci", "generic-ehci";
  31. reg = <0x01c14000 0x100>;
  32. interrupts = <39>;
  33. clocks = <&ahb_gates 1>;
  34. phys = <&usbphy 1>;
  35. phy-names = "usb";
  36. };