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bnxt_en: Use absolute target ns from ptp_clock_request

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There is no need to calculate the target PHC cycles required
to make phase adjustment on the PPS OUT signal. This is because
the application supplies absolute n_sec value in the future and
is already the actual desired target value.

Remove the unnecessary code.

Fixes: 9e518f2580 ("bnxt_en: 1PPS functions to configure TSIO pins")
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Tested-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20260504083611.1383776-5-pavan.chebbi@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Pavan Chebbi 2026-05-04 14:06:11 +05:30 committed by Jakub Kicinski
parent 16517bc98a
commit bd279e104e
1 changed files with 5 additions and 24 deletions
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29
drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
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@ -419,31 +419,13 @@ void bnxt_ptp_reapply_pps(struct bnxt *bp)
}
}
static int bnxt_get_target_cycles(struct bnxt_ptp_cfg *ptp, u64 target_ns,
u64 *cycles_delta)
{
u64 cycles_now;
u64 nsec_now, nsec_delta;
int rc;
rc = bnxt_refclk_read(ptp->bp, NULL, &cycles_now);
if (rc)
return rc;
nsec_now = bnxt_timecounter_cyc2time(ptp, cycles_now);
nsec_delta = target_ns - nsec_now;
*cycles_delta = div64_u64(nsec_delta << ptp->cc.shift, ptp->cc.mult);
return 0;
}
static int bnxt_ptp_perout_cfg(struct bnxt_ptp_cfg *ptp,
struct ptp_clock_request *rq)
{
struct hwrm_func_ptp_cfg_input *req;
struct bnxt *bp = ptp->bp;
struct timespec64 ts;
u64 target_ns, delta;
u64 target_ns;
u16 enables;
int rc;
@ -451,10 +433,6 @@ static int bnxt_ptp_perout_cfg(struct bnxt_ptp_cfg *ptp,
ts.tv_nsec = rq->perout.start.nsec;
target_ns = timespec64_to_ns(&ts);
rc = bnxt_get_target_cycles(ptp, target_ns, &delta);
if (rc)
return rc;
rc = hwrm_req_init(bp, req, HWRM_FUNC_PTP_CFG);
if (rc)
return rc;
@ -468,7 +446,10 @@ static int bnxt_ptp_perout_cfg(struct bnxt_ptp_cfg *ptp,
req->ptp_freq_adj_dll_phase = 0;
req->ptp_freq_adj_ext_period = cpu_to_le32(NSEC_PER_SEC);
req->ptp_freq_adj_ext_up = 0;
req->ptp_freq_adj_ext_phase_lower = cpu_to_le32(delta);
req->ptp_freq_adj_ext_phase_lower =
cpu_to_le32(lower_32_bits(target_ns));
req->ptp_freq_adj_ext_phase_upper =
cpu_to_le32(upper_32_bits(target_ns));
return hwrm_req_send(bp, req);
}