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Update ctucanfd_base.c #2

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Update ctucanfd_base.c #2

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6 changes: 3 additions & 3 deletions driver/ctucanfd_base.c
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Original file line number Diff line number Diff line change
Expand Up @@ -322,7 +322,7 @@ static int ctucan_set_secondary_sample_point(struct net_device *ndev)
struct ctucan_priv *priv = netdev_priv(ndev);
struct can_bittiming *dbt = &priv->can.data_bittiming;
int ssp_offset = 0;
u32 ssp_cfg = 0; /* No SSP by default */
u32 ssp_cfg = 0x01000000; /* No SSP by default */

ctucan_netdev_dbg(ndev, "%s\n", __func__);

Expand All @@ -334,15 +334,15 @@ static int ctucan_set_secondary_sample_point(struct net_device *ndev)
/* Use SSP for bit-rates above 1 Mbits/s */
if (dbt->bitrate > 1000000) {
/* Calculate SSP in minimal time quanta */
ssp_offset = (priv->can.clock.freq / 1000) * dbt->sample_point / dbt->bitrate;
ssp_offset = priv->can.clock.freq / dbt->bitrate / 2;/*for use with TRV_DELAY*/

if (ssp_offset > 127) {
netdev_warn(ndev, "SSP offset saturated to 127\n");
ssp_offset = 127;
}

ssp_cfg = FIELD_PREP(REG_TRV_DELAY_SSP_OFFSET, ssp_offset);
ssp_cfg |= FIELD_PREP(REG_TRV_DELAY_SSP_SRC, 0x1);
ssp_cfg |= FIELD_PREP(REG_TRV_DELAY_SSP_SRC, 0x0);
}

ctucan_write32(priv, CTUCANFD_TRV_DELAY, ssp_cfg);
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