[PATCH 1/2] arm: tegra: Add new DT property to USB node.
From: Venu Byravarasu <hidden>
Date: 2012-12-14 07:15:15
Also in:
linux-arm-kernel, linux-tegra, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest, usb subsystem · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Greg Kroah-Hartman
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 <redacted> --- .../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..443a2b4 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 b8effa1..3ebbd0c 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi@@ -364,6 +364,7 @@ phy_type = "utmi"; nvidia,has-legacy-mode; status = "disabled"; + nvidia,needs-double-reset; }; usb@c5004000 {
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1.7.0.4