linux-kernel - [PATCH 1/2] arm: tegra: Add new DT property to USB node.

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Date:	Fri, 14 Dec 2012 12:29:07 +0530
From:	Venu Byravarasu <vbyravarasu@...dia.com>
To:	<grant.likely@...retlab.ca>, <rob.herring@...xeda.com>,
	<rob@...dley.net>, <swarren@...dotorg.org>,
	<linux@....linux.org.uk>, <stern@...land.harvard.edu>,
	<gregkh@...uxfoundation.org>, <sjg@...omium.org>, <olof@...om.net>
CC:	<linux-kernel@...r.kernel.org>,
	<devicetree-discuss@...ts.ozlabs.org>, <linux-doc@...r.kernel.org>,
	<linux-tegra@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-usb@...r.kernel.org>,
	Venu Byravarasu <vbyravarasu@...dia.com>
Subject: [PATCH 1/2] arm: tegra: Add new DT property to USB node.

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@...dia.com>
---
 .../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@...04000 {
-- 
1.7.0.4

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