lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[ARM] 4738/1: at91sam9261: Remove udc pullup enabling in board initialisation

Browse Source 
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>
This commit is contained in:
Christian Glindkamp
2008-01-03 12:15:23 +01:00
committed by Russell King
parent 1b41bdf68a
commit da7a42d60b
1 changed files with 1 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/mach-at91/at91sam9261_devices.c
View File

@@ -107,8 +107,6 @@ static struct platform_device at91sam9261_udc_device = {
void __init at91_add_device_udc(struct at91_udc_data *data) void __init at91_add_device_udc(struct at91_udc_data *data)
{ {
unsigned long x;
if (!data) if (!data)
return; return;
@@ -117,9 +115,7 @@ void __init at91_add_device_udc(struct at91_udc_data *data)
at91_set_deglitch(data->vbus_pin, 1); at91_set_deglitch(data->vbus_pin, 1);
} }
/* Pullup pin is handled internally */ /* Pullup pin is handled internally by USB device peripheral */
x = at91_sys_read(AT91_MATRIX_USBPUCR);
at91_sys_write(AT91_MATRIX_USBPUCR, x | AT91_MATRIX_USBPUCR_PUON);
udc_data = *data; udc_data = *data;
platform_device_register(&at91sam9261_udc_device); platform_device_register(&at91sam9261_udc_device);