diff options
Diffstat (limited to 'drivers/usb/musb/blackfin.h')
| -rw-r--r-- | drivers/usb/musb/blackfin.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/musb/blackfin.h b/drivers/usb/musb/blackfin.h index b49a362fb9fa..10b7d7584f4b 100644 --- a/drivers/usb/musb/blackfin.h +++ b/drivers/usb/musb/blackfin.h @@ -41,6 +41,16 @@ * anomaly - 05000465. */ +/* The Mentor USB DMA engine on BF52x (silicon v0.0 and v0.1) seems to be + * unstable in host mode. This may be caused by Anomaly 05000380. After + * digging out the root cause, we will change this number accordingly. + * So, need to either use silicon v0.2+ or disable DMA mode in MUSB. + */ +#if ANOMALY_05000380 && defined(CONFIG_BF52x) && \ + defined(CONFIG_USB_MUSB_HDRC) && !defined(CONFIG_MUSB_PIO_ONLY) +# error "Please use PIO mode in MUSB driver on bf52x chip v0.0 and v0.1" +#endif + #undef DUMP_FIFO_DATA #ifdef DUMP_FIFO_DATA static void dump_fifo_data(u8 *buf, u16 len) |