As Tegra USB host driver is using instance number for resetting
PORT0 twice, adding a new DT property for handling this.
Signed-off-by: Venu Byravarasu <vbyravarasu@xxxxxxxxxx>
---
.../bindings/usb/nvidia,tegra20-ehci.txt | 2 ++
arch/arm/boot/dts/tegra20.dtsi | 1 +
2 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
index e9b005d..6ea765a 100644
--- a/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
@@ -27,3 +27,5 @@ Optional properties:
registers are accessed through the APB_MISC base address instead of
the USB controller. Since this is a legacy issue it probably does not
warrant a compatible string of its own.
+ - nvidia,needs-double-reset : boolean is to be set for some of the Tegra2
+ USB ports, which need reset twice due to hardware issues.
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index fe35c72..7f74339 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -384,6 +384,7 @@
phy_type = "utmi";
nvidia,has-legacy-mode;
status = "disabled";
+ nvidia,needs-double-reset;
};
usb@c5004000 {
--
1.7.0.4
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