diff options
Diffstat (limited to 'drivers/char/xilinx_hwicap')
| -rw-r--r-- | drivers/char/xilinx_hwicap/xilinx_hwicap.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.h b/drivers/char/xilinx_hwicap/xilinx_hwicap.h index 96677fc7ea4d..38b145eaf24d 100644 --- a/drivers/char/xilinx_hwicap/xilinx_hwicap.h +++ b/drivers/char/xilinx_hwicap/xilinx_hwicap.h @@ -85,7 +85,13 @@ struct hwicap_driver_config { void (*reset)(struct hwicap_drvdata *drvdata); }; -/* Number of times to poll the done regsiter */ +/* Number of times to poll the done register. This has to be large + * enough to allow an entire configuration to complete. If an entire + * page (4kb) is configured at once, that could take up to 4k cycles + * with a byte-wide icap interface. In most cases, this driver is + * used with a much smaller fifo, but this should be sufficient in the + * worst case. + */ #define XHI_MAX_RETRIES 5000 /************ Constant Definitions *************/ |