From aa607ebf93a5fc26275a575781399df971dd1b91 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Thu, 12 Apr 2012 15:46:49 -0600 Subject: ARM: tegra: add USB ULPI PHY reset GPIO to device tree ULPI PHYs have a reset signal, and different boards use a different GPIO for this task. Add a property to device tree to represent this. I'm not sure if adding this property to the EHCI controller node is entirely correct; perhaps eventually we should have explicit separate nodes for the various PHYs. However, we don't have that right now, so this binding seems like a reasonable choice. Cc: Cc: Greg Kroah-Hartman Cc: Signed-off-by: Stephen Warren --- Documentation/devicetree/bindings/usb/tegra-usb.txt | 3 +++ 1 file changed, 3 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/usb/tegra-usb.txt b/Documentation/devicetree/bindings/usb/tegra-usb.txt index 007005d..e9b005d 100644 --- a/Documentation/devicetree/bindings/usb/tegra-usb.txt +++ b/Documentation/devicetree/bindings/usb/tegra-usb.txt @@ -12,6 +12,9 @@ Required properties : - nvidia,vbus-gpio : If present, specifies a gpio that needs to be activated for the bus to be powered. +Required properties for phy_type == ulpi: + - nvidia,phy-reset-gpio : The GPIO used to reset the PHY. + Optional properties: - dr_mode : dual role mode. Indicates the working mode for nvidia,tegra20-ehci compatible controllers. Can be "host", "peripheral", -- cgit v1.1