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>
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@ -26,7 +26,11 @@ Required properties:
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- reg: Base address and length of the register for the USBHS
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- interrupts: Interrupt specifier for the USBHS
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- clocks: A list of phandle + clock specifier pairs
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- clocks: A list of phandle + clock specifier pairs.
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- In case of "renesas,rcar-gen3-usbhs", two clocks are required.
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First clock should be peripheral and second one should be host.
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- In case of except above, one clock is required. First clock
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should be peripheral.
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Optional properties:
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- renesas,buswait: Integer to use BUSWAIT register
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