forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
1.6 KiB
62 lines
1.6 KiB
OCTEON/OCTEON+ USB BLOCK |
|
|
|
1) Main node |
|
|
|
Required properties: |
|
|
|
- compatible: must be "cavium,octeon-5750-usbn" |
|
|
|
- reg: specifies the physical base address of the USBN block and |
|
the length of the memory mapped region. |
|
|
|
- #address-cells: specifies the number of cells needed to encode an |
|
address. The value must be 2. |
|
|
|
- #size-cells: specifies the number of cells used to represent the size |
|
of an address. The value must be 2. |
|
|
|
- ranges: specifies the translation between child address space and parent |
|
address space. |
|
|
|
- clock-frequency: speed of the USB reference clock. Allowed values are |
|
12000000, 24000000 or 48000000. |
|
|
|
- cavium,refclk-type: type of the USB reference clock. Allowed values are |
|
"crystal" or "external". |
|
|
|
- refclk-frequency: deprecated, use "clock-frequency". |
|
|
|
- refclk-type: deprecated, use "cavium,refclk-type". |
|
|
|
2) Child node |
|
|
|
The main node must have one child node which describes the built-in |
|
USB controller. |
|
|
|
Required properties: |
|
|
|
- compatible: must be "cavium,octeon-5750-usbc" |
|
|
|
- reg: specifies the physical base address of the USBC block and |
|
the length of the memory mapped region. |
|
|
|
- interrupts: specifies the interrupt number for the USB controller. |
|
|
|
3) Example: |
|
|
|
usbn: usbn@1180068000000 { |
|
compatible = "cavium,octeon-5750-usbn"; |
|
reg = <0x11800 0x68000000 0x0 0x1000>; |
|
ranges; /* Direct mapping */ |
|
#address-cells = <2>; |
|
#size-cells = <2>; |
|
clock-frequency = <12000000>; |
|
cavium,refclk-type = "crystal"; |
|
|
|
usbc@16f0010000000 { |
|
compatible = "cavium,octeon-5750-usbc"; |
|
reg = <0x16f00 0x10000000 0x0 0x80000>; |
|
interrupts = <0 56>; |
|
}; |
|
}; |
|
|
|
|