From: Venu Byravarasu <vbyravarasu@nvidia.com>
To: <gregkh@linuxfoundation.org>, <stern@rowland.harvard.edu>
Cc: <linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<swarren@wwwdotorg.org>, Venu Byravarasu <vbyravarasu@nvidia.com>
Subject: [PATCH RESEND 1/2] arm: tegra: Add new DT property to USB node.
Date: Thu, 3 Jan 2013 12:59:38 +0530 [thread overview]
Message-ID: <1357198179-10031-2-git-send-email-vbyravarasu@nvidia.com> (raw)
In-Reply-To: <1357198179-10031-1-git-send-email-vbyravarasu@nvidia.com>
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@nvidia.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..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
next prev parent reply other threads:[~2013-01-03 7:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-03 7:29 [PATCH RESEND 0/2] usb: tegra: modifying port reset based on instance number Venu Byravarasu
2013-01-03 7:29 ` Venu Byravarasu [this message]
2013-01-03 7:29 ` [PATCH RESEND 2/2] usb: host: tegra: Resetting PORT0 based on information received via DT Venu Byravarasu
2013-01-03 20:29 ` Stephen Warren
2013-01-12 0:14 ` Greg KH
2013-01-12 0:43 ` Stephen Warren
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