On the MIPS Boston development board, the EG20T MAC does not report
receiving the RX clock from the (RGMII) RTL8211E PHY unless the PHY is
reset at the same time as the MAC. Since the pch_gbe driver resets the
MAC a number of times - twice during probe, and when taking down the
network interface - we need to reset the PHY at all the same times. Do
that from pch_gbe_mac_reset_hw which is used to reset the MAC in all
cases.
Signed-off-by: Paul Burton <paul.burton@xxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: Jarod Wilson <jarod@xxxxxxxxxx>
Cc: Tobias Klauser <tklauser@xxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx
---
Changes in v3: None
Changes in v2: None
drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
index 59a42c20d433..f8791be7b3b5 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
@@ -380,10 +380,13 @@ static void pch_gbe_mac_reset_hw(struct pch_gbe_hw *hw)
{
/* Read the MAC address. and store to the private data */
pch_gbe_mac_read_mac_addr(hw);
+ pch_gbe_phy_set_reset(hw, 1);
iowrite32(PCH_GBE_ALL_RST, &hw->reg->RESET);
#ifdef PCH_GBE_MAC_IFOP_RGMII
iowrite32(PCH_GBE_MODE_GMII_ETHER, &hw->reg->MODE);
#endif
+ pch_gbe_phy_set_reset(hw, 0);
+ usleep_range(1250, 1500);
pch_gbe_wait_clr_bit(&hw->reg->RESET, PCH_GBE_ALL_RST);
/* Setup the receive addresses */
pch_gbe_mac_mar_set(hw, hw->mac.addr, 0);
--
2.13.0
