[U-Boot] [PATCH] MX31: add delay between USB port setup and reset

[U-Boot] [PATCH] MX31: add delay between USB port setup and reset

[Stefano Babic]

Sometimes a usb tree is not popolated after a system reset.
It seems a delay is required after setting the USB ports
for the MX.31 before resetting the ehci controller.

Signed-off-by: Stefano Babic <sbabic@denx.de>
---
 drivers/usb/host/ehci-mxc.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
index af8ee90..8d7b380 100644
--- a/drivers/usb/host/ehci-mxc.c
+++ b/drivers/usb/host/ehci-mxc.c
@@ -117,6 +117,8 @@ int ehci_hcd_init(void)
 
 	mxc_set_usbcontrol(CONFIG_MXC_USB_PORT, CONFIG_MXC_USB_FLAGS);
 
+	udelay(10000);
+
 	return 0;
 }
 
-- 
1.7.1

[U-Boot] [PATCH] MX31: add delay between USB port setup and reset

[Stefano Babic]

On 10/19/2010 12:02 PM, Stefano Babic wrote:
> Sometimes a usb tree is not popolated after a system reset.
> It seems a delay is required after setting the USB ports
> for the MX.31 before resetting the ehci controller.
> 
> Signed-off-by: Stefano Babic <sbabic@denx.de>
> ---
>  drivers/usb/host/ehci-mxc.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 

Applied to u-boot-imx, thanks

Best regards,
Stefano Babic

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