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| author | Sonic Zhang <sonic.zhang@analog.com> | 2009-11-16 16:19:27 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-11 11:55:24 -0800 |
| commit | 0702794c41c3740e65ec83d393b7cb4d048be954 (patch) | |
| tree | e982a1474ad70912116ac85d70b537ff2abc3046 | |
| parent | 6bd03e7b9d0f70928f9cd793326c28e4e08ffc96 (diff) | |
| download | talos-obmc-linux-0702794c41c3740e65ec83d393b7cb4d048be954.tar.gz talos-obmc-linux-0702794c41c3740e65ec83d393b7cb4d048be954.zip | |
USB: musb: error out when anomaly 05000380 is applicable
Since we can't work around anomaly 05000380, throw a build error up and
instruct the user to use a different mode.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -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) |
