From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sasha Neftin Date: Thu, 24 Jun 2021 11:19:08 +0300 Subject: [Intel-wired-lan] [PATCH v1 3/3] e1000e: Additional PHY power saving in s0ix Message-ID: <20210624081908.568757-1-sasha.neftin@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: After transferring the MAC-PHY interface to the SMBus the PHY will save power in S0ix low power idle mode. Suggested-by: Dima Ruinskiy Signed-off-by: Sasha Neftin --- 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 6e6e2e685e9d..c4f3e5ca7294 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -6380,10 +6380,16 @@ 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); -- 2.25.1