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dt-bindings: usb: ehci: Add clocks description for R-Car Gen3

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This patch adds detailed information of an optional property "clocks"
description for R-Car Gen3.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yoshihiro Shimoda 2018-09-10 20:15:47 +09:00 committed by Greg Kroah-Hartman
parent f13912d3f0
commit 0e4aeab775
1 changed files with 5 additions and 1 deletions
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6
Documentation/devicetree/bindings/usb/usb-ehci.txt
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@ -15,7 +15,11 @@ Optional properties:
- needs-reset-on-resume : boolean, set this to force EHCI reset after resume
- has-transaction-translator : boolean, set this if EHCI have a Transaction
Translator built into the root hub.
- clocks : a list of phandle + clock specifier pairs
- clocks : a list of phandle + clock specifier pairs. In case of Renesas
R-Car Gen3 SoCs:
- if a host only channel: first clock should be host.
- if a USB DRD channel: first clock should be host and second one
should be peripheral.
- phys : see usb-hcd.txt in the current directory
- resets : phandle + reset specifier pair