diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c index 7e0fa024e0ad..fa2c3ba7e9fe 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c @@ -60,48 +60,6 @@ static void config_sub_second_increment(void __iomem *ioaddr, *ssinc = data; } -static void correct_latency(struct stmmac_priv *priv) -{ - void __iomem *ioaddr = priv->ptpaddr; - u32 reg_tsic, reg_tsicsns; - u32 reg_tsec, reg_tsecsns; - u64 scaled_ns; - u32 val; - - /* MAC-internal ingress latency */ - scaled_ns = readl(ioaddr + PTP_TS_INGR_LAT); - - /* See section 11.7.2.5.3.1 "Ingress Correction" on page 4001 of - * i.MX8MP Applications Processor Reference Manual Rev. 1, 06/2021 - */ - val = readl(ioaddr + PTP_TCR); - if (val & PTP_TCR_TSCTRLSSR) - /* nanoseconds field is in decimal format with granularity of 1ns/bit */ - scaled_ns = ((u64)NSEC_PER_SEC << 16) - scaled_ns; - else - /* nanoseconds field is in binary format with granularity of ~0.466ns/bit */ - scaled_ns = ((1ULL << 31) << 16) - - DIV_U64_ROUND_CLOSEST(scaled_ns * PSEC_PER_NSEC, 466U); - - reg_tsic = scaled_ns >> 16; - reg_tsicsns = scaled_ns & 0xff00; - - /* set bit 31 for 2's compliment */ - reg_tsic |= BIT(31); - - writel(reg_tsic, ioaddr + PTP_TS_INGR_CORR_NS); - writel(reg_tsicsns, ioaddr + PTP_TS_INGR_CORR_SNS); - - /* MAC-internal egress latency */ - scaled_ns = readl(ioaddr + PTP_TS_EGR_LAT); - - reg_tsec = scaled_ns >> 16; - reg_tsecsns = scaled_ns & 0xff00; - - writel(reg_tsec, ioaddr + PTP_TS_EGR_CORR_NS); - writel(reg_tsecsns, ioaddr + PTP_TS_EGR_CORR_SNS); -} - static int init_systime(void __iomem *ioaddr, u32 sec, u32 nsec) { u32 value; @@ -263,5 +221,4 @@ const struct stmmac_hwtimestamp stmmac_ptp = { .get_systime = get_systime, .get_ptptime = get_ptptime, .timestamp_interrupt = timestamp_interrupt, - .correct_latency = correct_latency, }; |