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net: pcs: xpcs: fix incorrect steps on disable EEE

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When Energy-Efficient Ethernet(EEE) is disable from the MAC side,
we need to clear the DW_VR_MII_EEE_TRN_LPI bit of DW_VR_MII_EEE_MCTRL1
register.

Fixes: 7617af3d1a ("net: pcs: Introducing support for DWC xpcs Energy Efficient Ethernet")
Cc: Michael Sit Wei Hong <michael.wei.hong.sit@intel.com>
Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wong Vee Khee 2021-10-05 19:50:59 +08:00 committed by David S. Miller
parent 7707a4d01a
commit 590df78bc7
1 changed files with 9 additions and 4 deletions
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11
drivers/net/pcs/pcs-xpcs.c
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@ -666,6 +666,10 @@ int xpcs_config_eee(struct dw_xpcs *xpcs, int mult_fact_100ns, int enable)
{
int ret;
ret = xpcs_read(xpcs, MDIO_MMD_VEND2, DW_VR_MII_EEE_MCTRL0);
if (ret < 0)
return ret;
if (enable) {
/* Enable EEE */
ret = DW_VR_MII_EEE_LTX_EN | DW_VR_MII_EEE_LRX_EN |
@ -673,9 +677,6 @@ int xpcs_config_eee(struct dw_xpcs *xpcs, int mult_fact_100ns, int enable)
DW_VR_MII_EEE_TX_EN_CTRL | DW_VR_MII_EEE_RX_EN_CTRL |
mult_fact_100ns << DW_VR_MII_EEE_MULT_FACT_100NS_SHIFT;
} else {
ret = xpcs_read(xpcs, MDIO_MMD_VEND2, DW_VR_MII_EEE_MCTRL0);
if (ret < 0)
return ret;
ret &= ~(DW_VR_MII_EEE_LTX_EN | DW_VR_MII_EEE_LRX_EN |
DW_VR_MII_EEE_TX_QUIET_EN | DW_VR_MII_EEE_RX_QUIET_EN |
DW_VR_MII_EEE_TX_EN_CTRL | DW_VR_MII_EEE_RX_EN_CTRL |
@ -690,7 +691,11 @@ int xpcs_config_eee(struct dw_xpcs *xpcs, int mult_fact_100ns, int enable)
if (ret < 0)
return ret;
if (enable)
ret |= DW_VR_MII_EEE_TRN_LPI;
else
ret &= ~DW_VR_MII_EEE_TRN_LPI;
return xpcs_write(xpcs, MDIO_MMD_VEND2, DW_VR_MII_EEE_MCTRL1, ret);
}
EXPORT_SYMBOL_GPL(xpcs_config_eee);