mirror of
https://github.com/torvalds/linux.git
synced 2024-12-28 13:51:44 +00:00
b3da72593e
Add USB PHY support for r8a7744 SoC. Renesas RZ/G1N (R8A7744) USB PHY is identical to the R-Car Gen2 family. Signed-off-by: Biju Das <biju.das@bp.renesas.com> Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Rob Herring <robh@kernel.org>
63 lines
2.3 KiB
Plaintext
63 lines
2.3 KiB
Plaintext
* Renesas R-Car generation 2 USB PHY
|
|
|
|
This file provides information on what the device node for the R-Car generation
|
|
2 USB PHY contains.
|
|
|
|
Required properties:
|
|
- compatible: "renesas,usb-phy-r8a7743" if the device is a part of R8A7743 SoC.
|
|
"renesas,usb-phy-r8a7744" if the device is a part of R8A7744 SoC.
|
|
"renesas,usb-phy-r8a7745" if the device is a part of R8A7745 SoC.
|
|
"renesas,usb-phy-r8a7790" if the device is a part of R8A7790 SoC.
|
|
"renesas,usb-phy-r8a7791" if the device is a part of R8A7791 SoC.
|
|
"renesas,usb-phy-r8a7794" if the device is a part of R8A7794 SoC.
|
|
"renesas,rcar-gen2-usb-phy" for a generic R-Car Gen2 or
|
|
RZ/G1 compatible device.
|
|
|
|
When compatible with the generic version, nodes must list the
|
|
SoC-specific version corresponding to the platform first
|
|
followed by the generic version.
|
|
|
|
- reg: offset and length of the register block.
|
|
- #address-cells: number of address cells for the USB channel subnodes, must
|
|
be <1>.
|
|
- #size-cells: number of size cells for the USB channel subnodes, must be <0>.
|
|
- clocks: clock phandle and specifier pair.
|
|
- clock-names: string, clock input name, must be "usbhs".
|
|
|
|
The USB PHY device tree node should have the subnodes corresponding to the USB
|
|
channels. These subnodes must contain the following properties:
|
|
- reg: the USB controller selector; see the table below for the values.
|
|
- #phy-cells: see phy-bindings.txt in the same directory, must be <1>.
|
|
|
|
The phandle's argument in the PHY specifier is the USB controller selector for
|
|
the USB channel; see the selector meanings below:
|
|
|
|
+-----------+---------------+---------------+
|
|
|\ Selector | | |
|
|
+ --------- + 0 | 1 |
|
|
| Channel \| | |
|
|
+-----------+---------------+---------------+
|
|
| 0 | PCI EHCI/OHCI | HS-USB |
|
|
| 2 | PCI EHCI/OHCI | xHCI |
|
|
+-----------+---------------+---------------+
|
|
|
|
Example (Lager board):
|
|
|
|
usb-phy@e6590100 {
|
|
compatible = "renesas,usb-phy-r8a7790", "renesas,rcar-gen2-usb-phy";
|
|
reg = <0 0xe6590100 0 0x100>;
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
clocks = <&mstp7_clks R8A7790_CLK_HSUSB>;
|
|
clock-names = "usbhs";
|
|
|
|
usb-channel@0 {
|
|
reg = <0>;
|
|
#phy-cells = <1>;
|
|
};
|
|
usb-channel@2 {
|
|
reg = <2>;
|
|
#phy-cells = <1>;
|
|
};
|
|
};
|