GitHub-Mirror/u-boot
2
0
Fork 0
mirror of https://github.com/Fishwaldo/u-boot.git synced 2025-03-21 06:31:31 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Add support for USB on PSC3 for the mpc5200

Browse source 
Support USB on PSC3 on the mpc5200.  Before this patch, enabling USB support
would reconfigure PSC4 and PSC5 to USB.  The mpc5200 does not support USB
enabled on both the standard USB port and PSC3.  This patch masks the
appropriate bits when enabling USB.

Signed-off-by: Eric Millbrandt <emillbrandt@dekaresearch.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Remy Bohmer <linux@bohmer.net>
This commit is contained in:
Eric Millbrandt 2009-08-13 08:32:37 -05:00 • committed by Wolfgang Denk
parent 6b8548b0f7
commit 307ecb6db0
3 changed files with 14 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
README
View file

@ -858,9 +858,13 @@ The following options need to be configured:
MPC5200 USB requires additional defines:
CONFIG_USB_CLOCK
for 528 MHz Clock: 0x0001bbbb
CONFIG_PSC3_USB
for USB on PSC3
CONFIG_USB_CONFIG
for differential drivers: 0x00001000
for single ended drivers: 0x00005000
for differential drivers on PSC3: 0x00000100
for single ended drivers on PSC3: 0x00004100
CONFIG_SYS_USB_EVENT_POLL
May be defined to allow interrupt polling
instead of using asynchronous interrupts

6
cpu/mpc5xxx/usb.c
View file

@ -32,9 +32,13 @@ int usb_cpu_init(void)
/* Set the USB Clock */
*(vu_long *)MPC5XXX_CDM_48_FDC = CONFIG_USB_CLOCK;
#ifdef CONFIG_PSC3_USB /* USB is using the alternate configuration */
/* remove all PSC3 USB bits first before ORing in ours */
*(vu_long *)MPC5XXX_GPS_PORT_CONFIG &= ~0x00804f00;
#else
/* remove all USB bits first before ORing in ours */
*(vu_long *)MPC5XXX_GPS_PORT_CONFIG &= ~0x00807000;
#endif
/* Activate USB port */
*(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= CONFIG_USB_CONFIG;

6
cpu/mpc5xxx/usb_ohci.c
View file

@ -1576,9 +1576,13 @@ int usb_lowlevel_init(void)
/* Set the USB Clock */
*(vu_long *)MPC5XXX_CDM_48_FDC = CONFIG_USB_CLOCK;
#ifdef CONFIG_PSC3_USB /* USB is using the alternate configuration */
/* remove all PSC3 USB bits first before ORing in ours */
*(vu_long *)MPC5XXX_GPS_PORT_CONFIG &= ~0x00804f00;
#else
/* remove all USB bits first before ORing in ours */
*(vu_long *)MPC5XXX_GPS_PORT_CONFIG &= ~0x00807000;
#endif
/* Activate USB port */
*(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= CONFIG_USB_CONFIG;