From 307ecb6db04eebdc06b8c87d48bf48d3cbd5e9d7 Mon Sep 17 00:00:00 2001 From: Eric Millbrandt <emillbrandt@coldhaus.com> Date: Thu, 13 Aug 2009 08:32:37 -0500 Subject: [PATCH] Add support for USB on PSC3 for the mpc5200 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> --- README | 4 ++++ cpu/mpc5xxx/usb.c | 6 +++++- cpu/mpc5xxx/usb_ohci.c | 6 +++++- 3 files changed, 14 insertions(+), 2 deletions(-) diff --git a/README b/README index cf3867dcf3..246ae2badc 100644 --- a/README +++ b/README @@ -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 diff --git a/cpu/mpc5xxx/usb.c b/cpu/mpc5xxx/usb.c index 8f2b66a518..bec7da3eab 100644 --- a/cpu/mpc5xxx/usb.c +++ b/cpu/mpc5xxx/usb.c @@ -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; diff --git a/cpu/mpc5xxx/usb_ohci.c b/cpu/mpc5xxx/usb_ohci.c index 61a4e3fb67..66a4af8d8e 100644 --- a/cpu/mpc5xxx/usb_ohci.c +++ b/cpu/mpc5xxx/usb_ohci.c @@ -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; -- 2.39.5