diff options
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h index 4ce0a14c1e23..34162e07a119 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h @@ -17,6 +17,8 @@ #define BNXT_PTP_GRC_WIN_BASE 0x6000 #define BNXT_MAX_PHC_DRIFT 31000000 +#define BNXT_CYCLES_SHIFT 23 +#define BNXT_DEVCLK_FREQ 1000000 #define BNXT_LO_TIMER_MASK 0x0000ffffffffUL #define BNXT_HI_TIMER_MASK 0xffff00000000UL @@ -88,8 +90,9 @@ struct bnxt_ptp_cfg { u64 old_time; unsigned long next_period; unsigned long next_overflow_check; - /* 48-bit PHC overflows in 78 hours. Check overflow every 19 hours. */ - #define BNXT_PHC_OVERFLOW_PERIOD (19 * 3600 * HZ) + u32 cmult; + /* a 23b shift cyclecounter will overflow in ~36 mins. Check overflow every 18 mins. */ + #define BNXT_PHC_OVERFLOW_PERIOD (18 * 60 * HZ) u16 tx_seqid; u16 tx_hdr_off; |