Commit 3ad3e28c authored by Sasha Neftin's avatar Sasha Neftin Committed by Tony Nguyen
Browse files

e1000e: Additional PHY power saving in S0ix 



After transferring the MAC-PHY interface to the SMBus set the PHY
to S0ix low power idle mode.

Suggested-by: default avatarDima Ruinskiy <dima.ruinskiy@intel.com>
Signed-off-by: default avatarSasha Neftin <sasha.neftin@intel.com>
Tested-by: default avatarDvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
parent ef407b86

drivers/net/ethernet/intel/e1000e/netdev.c

+6 −0
Original line number Diff line number Diff line
@@ -6378,10 +6378,16 @@ static void e1000e_s0ix_entry_flow(struct e1000_adapter *adapter) 
		ew32(CTRL_EXT, mac_data);



		/* DFT control: PHY bit: page769_20[0] = 1

		 * page769_20[7] - PHY PLL stop

		 * page769_20[8] - PHY go to the electrical idle

		 * page769_20[9] - PHY serdes disable

		 * Gate PPW via EXTCNF_CTRL - set 0x0F00[7] = 1

		 */

		e1e_rphy(hw, I82579_DFT_CTRL, &phy_data);

		phy_data |= BIT(0);

		phy_data |= BIT(7);

		phy_data |= BIT(8);

		phy_data |= BIT(9);

		e1e_wphy(hw, I82579_DFT_CTRL, phy_data);



		mac_data = er32(EXTCNF_CTRL);