[PATCH v1 3/3] net/e1000/base: enable ULP on LANPHYPC

[Anatoly Burakov]

From: Dima Ruinskiy <dima.ruinskiy at intel.com>

When the system enters Sx without wakeup configured, the PHY is powered
down autonomously via LANPHYPC.

Set `I218_ULP_CONFIG1_EN_ULP_LANPHYPC` when configuring ULP in
`e1000_enable_ulp_lpt_lp()` so that the PHY also enters ULP on
LANPHYPC, for additional power savings.

Signed-off-by: Dima Ruinskiy <dima.ruinskiy at intel.com>
Signed-off-by: Anatoly Burakov <anatoly.burakov at intel.com>
---
 drivers/net/intel/e1000/base/e1000_ich8lan.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/intel/e1000/base/e1000_ich8lan.c b/drivers/net/intel/e1000/base/e1000_ich8lan.c
index b020639563..ed86c24af6 100644
--- a/drivers/net/intel/e1000/base/e1000_ich8lan.c
+++ b/drivers/net/intel/e1000/base/e1000_ich8lan.c
@@ -1283,6 +1283,7 @@ s32 e1000_enable_ulp_lpt_lp(struct e1000_hw *hw, bool to_sx)
 	if (ret_val)
 		goto release;
 	phy_reg |= (I218_ULP_CONFIG1_RESET_TO_SMBUS |
+		    I218_ULP_CONFIG1_EN_ULP_LANPHYPC |
 		    I218_ULP_CONFIG1_DISABLE_SMB_PERST);
 	if (to_sx) {
 		if (E1000_READ_REG(hw, E1000_WUFC) & E1000_WUFC_LNKC)
-- 
2.52.0