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dt-bindings: usb: renesas_usbhs: add clock-names property 

R-Car Gen3 needs to enable clocks of both host and peripheral.
Otherwise, other side device cannot work correctly. So, this patch
adds a property of clock-names for R-Car Gen3 as an optional.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yoshihiro Shimoda 2018-09-11 17:47:04 +09:00 committed by Greg Kroah-Hartman
parent f181dbb482
commit 8e0d368a59
1 changed files with 5 additions and 1 deletions
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6
Documentation/devicetree/bindings/usb/renesas_usbhs.txt
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@ -26,7 +26,11 @@ Required properties:
- reg: Base address and length of the register for the USBHS
- interrupts: Interrupt specifier for the USBHS
- clocks: A list of phandle + clock specifier pairs
- clocks: A list of phandle + clock specifier pairs.
- In case of "renesas,rcar-gen3-usbhs", two clocks are required.
First clock should be peripheral and second one should be host.
- In case of except above, one clock is required. First clock
should be peripheral.
Optional properties:
- renesas,buswait: Integer to use BUSWAIT register