[U-Boot] [PATCH] ehci: speed up initialization

[Vincent Palatin]

According to EHCI specification v1.0, the controller should stabilize
the power on a port at most 20 ms after the port power bit transition.
So, we put this setting in the virtual descriptor corresponding field,
(bPwrOn2PwrGood = 10 => 10 x 2ms = 20ms), this saves about 500ms at each
controller initialization/enumeration.

Signed-off-by: Vincent Palatin <vpalatin at chromium.org>
---
 drivers/usb/host/ehci-hcd.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 2197119..caa0cfb 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -48,7 +48,7 @@ static struct descriptor {
 		0x29,		/* bDescriptorType: hub descriptor */
 		2,		/* bNrPorts -- runtime modified */
 		0,		/* wHubCharacteristics */
-		0xff,		/* bPwrOn2PwrGood */
+		10,		/* bPwrOn2PwrGood */
 		0,		/* bHubCntrCurrent */
 		{},		/* Device removable */
 		{}		/* at most 7 ports! XXX */
-- 
1.7.3.1