[PATCH net-next 03/12] e1000e: Additional PHY power saving in S0ix
From: Tony Nguyen <anthony.l.nguyen@intel.com>
Date: 2021-07-20 23:18:44
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Sasha Neftin <redacted> After transferring the MAC-PHY interface to the SMBus set the PHY to S0ix low power idle mode. Suggested-by: Dima Ruinskiy <redacted> Signed-off-by: Sasha Neftin <redacted> Tested-by: Dvora Fuxbrumer <redacted> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> --- drivers/net/ethernet/intel/e1000e/netdev.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 27107a927455..79e8791119cd 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c@@ -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);
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2.26.2