diff options
| -rw-r--r-- | drivers/net/ethernet/freescale/fec_main.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 1ae075a246a3..aa5e744ec098 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -996,6 +996,9 @@ fec_restart(struct net_device *ndev) writel(0x0, fep->hwp + FEC_X_CNTRL); } + /* Prevent an MII event being report when changing speed */ + writel(0, fep->hwp + FEC_MII_DATA); + /* Set MII speed */ writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); @@ -1182,6 +1185,10 @@ fec_stop(struct net_device *ndev) writel(val, fep->hwp + FEC_ECNTRL); fec_enet_stop_mode(fep, true); } + + /* Prevent an MII event being report when changing speed */ + writel(0, fep->hwp + FEC_MII_DATA); + writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); /* We have to keep ENET enabled to have MII interrupt stay working */ @@ -2142,6 +2149,16 @@ static int fec_enet_mii_init(struct platform_device *pdev) if (suppress_preamble) fep->phy_speed |= BIT(7); + /* Clear MMFR to avoid to generate MII event by writing MSCR. + * MII event generation condition: + * - writing MSCR: + * - mmfr[31:0]_not_zero & mscr[7:0]_is_zero & + * mscr_reg_data_in[7:0] != 0 + * - writing MMFR: + * - mscr[7:0]_not_zero + */ + writel(0, fep->hwp + FEC_MII_DATA); + writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); /* Clear any pending transaction complete indication */ |