tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1USB EHCI controllers
2
3Required properties:
4 - compatible : should be "generic-ehci".
5 - reg : should contain at least address and length of the standard EHCI
6 register set for the device. Optional platform-dependent registers
7 (debug-port or other) can be also specified here, but only after
8 definition of standard EHCI registers.
9 - interrupts : one EHCI interrupt should be described here.
10
11Optional properties:
12 - big-endian-regs : boolean, set this for hcds with big-endian registers
13 - big-endian-desc : boolean, set this for hcds with big-endian descriptors
14 - big-endian : boolean, for hcds with big-endian-regs + big-endian-desc
15 - needs-reset-on-resume : boolean, set this to force EHCI reset after resume
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
21Example (Sequoia 440EPx):
22 ehci@e0000300 {
23 compatible = "ibm,usb-ehci-440epx", "usb-ehci";
24 interrupt-parent = <&UIC0>;
25 interrupts = <1a 4>;
26 reg = <0 e0000300 90 0 e0000390 70>;
27 big-endian;
28 };
29
30Example (Allwinner sun4i A10 SoC):
31 ehci0: usb@01c14000 {
32 compatible = "allwinner,sun4i-a10-ehci", "generic-ehci";
33 reg = <0x01c14000 0x100>;
34 interrupts = <39>;
35 clocks = <&ahb_gates 1>;
36 phys = <&usbphy 1>;
37 phy-names = "usb";
38 };