Hello. On 03/06/2014 09:19 PM, Ben Dooks wrote:
Add support for the phy-rcar-gen2-usb driver to be probed from device tree.
Signed-off-by: Ben Dooks <ben.dooks@xxxxxxxxxxxxxxx> Reviewed-by: Ian Molton <ian.molton@xxxxxxxxxxxxxxx>
[...]
drivers/usb/phy/phy-rcar-gen2-usb.c | 34 +++++++++++++++++--- 3 files changed, 66 insertions(+), 5 deletions(-) create mode 100644 Documentation/devicetree/bindings/usb/renesas,rcar-gen2-usb-phy.txt
diff --git a/Documentation/devicetree/bindings/usb/renesas,rcar-gen2-usb-phy.txt b/Documentation/devicetree/bindings/usb/renesas,rcar-gen2-usb-phy.txt new file mode 100644 index 0000000..5351a30 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/renesas,rcar-gen2-usb-phy.txt @@ -0,0 +1,36 @@ +Renesas RCar gen2 USB PHY bindings +---------------------------------- + +Bindings for the USB PHY block used in some Renesas SoCs. + +Required properties: + - compatible: "renesas,usb-phy-r8a7790" for the R8A7790 SoC + "renesas,usb-phy-r8a7791" for the R8A7791 SoC + - reg : A single region to access device registers + - clocks : The reference to the clock to use for this block + - clock-names : The name for the clock at index 0 (must be "usbhs") + +Optional properties: + + - renesas,usb0-device: boolean, if present USB0 is connected to HS device + otherwise the USB0 is connected to OHCI/EHCI host.
IIUC, the testing has shown that USBHS is dual-role controller in that case, i.e. supports both host and device roles (the manual has the host controller details too). Vladimir, is it so?
Currently there is no auto-detection for this, so it gets set at start time.
The mode can be auto-detected by reading SW5. My point was however, that it doesn't seem correct to call the prop "renesas,usb0-device". I'd rather suggest "renesas,usb0-usbhs" if you keep sticking to the scheme opposite to the platform data.
WBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
