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authorChristian Glindkamp <christian.glindkamp@taskit.de>2008-01-03 12:15:23 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-01-26 15:00:33 +0000
commitda7a42d60ba214937ddb35152f336a4e4baa49a6 (patch)
tree378bad8a670a44b3682a931e1424dc84f0bd1d9e
parent1b41bdf68a72c1fd506ee3dbfbf954fd2eaef75c (diff)
[ARM] 4738/1: at91sam9261: Remove udc pullup enabling in board initialisation
Currently the udc pullup is enabled by default on boot. If the device is connected to a host at this time, the host starts the negotiation before the udc/gadget driver is ready to handle it. Signed-off-by: Christian Glindkamp <christian.glindkamp@taskit.de> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--arch/arm/mach-at91/at91sam9261_devices.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c
index 57d7e3bd05d..245641263fc 100644
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -107,8 +107,6 @@ static struct platform_device at91sam9261_udc_device = {
void __init at91_add_device_udc(struct at91_udc_data *data)
{
- unsigned long x;
-
if (!data)
return;
@@ -117,9 +115,7 @@ void __init at91_add_device_udc(struct at91_udc_data *data)
at91_set_deglitch(data->vbus_pin, 1);
}
- /* Pullup pin is handled internally */
- x = at91_sys_read(AT91_MATRIX_USBPUCR);
- at91_sys_write(AT91_MATRIX_USBPUCR, x | AT91_MATRIX_USBPUCR_PUON);
+ /* Pullup pin is handled internally by USB device peripheral */
udc_data = *data;
platform_device_register(&at91sam9261_udc_device);