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Documentation: dt-bindings: Add snps,need-phy-for-wake for dwc2 USB

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Some SoCs with a dwc2 USB controller may need to keep the PHY on to
support remote wakeup.  Allow specifying this as a device tree
property.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Douglas Anderson 2019-05-20 10:56:03 -07:00 committed by Felipe Balbi
parent 1112cf4c41
commit cd5f972677
1 changed files with 3 additions and 0 deletions
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3
Documentation/devicetree/bindings/usb/dwc2.txt
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@ -42,6 +42,8 @@ Refer to phy/phy-bindings.txt for generic phy consumer properties
- g-rx-fifo-size: size of rx fifo size in gadget mode. - g-rx-fifo-size: size of rx fifo size in gadget mode.
- g-np-tx-fifo-size: size of non-periodic tx fifo size in gadget mode. - g-np-tx-fifo-size: size of non-periodic tx fifo size in gadget mode.
- g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0) in gadget mode. - g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0) in gadget mode.
- snps,need-phy-for-wake: If present indicates that the phy needs to be left
on for remote wakeup during suspend.
- snps,reset-phy-on-wake: If present indicates that we need to reset the PHY when - snps,reset-phy-on-wake: If present indicates that we need to reset the PHY when
we detect a wakeup. This is due to a hardware errata. we detect a wakeup. This is due to a hardware errata.
@ -58,4 +60,5 @@ Example:
clock-names = "otg"; clock-names = "otg";
phys = <&usbphy>; phys = <&usbphy>;
phy-names = "usb2-phy"; phy-names = "usb2-phy";
snps,need-phy-for-wake;
}; };