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Commit 69cfbc95 authored by Yanir Lubetkin's avatar Yanir Lubetkin Committed by Jeff Kirsher
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e1000e: i219 - increase IPG for speed 10/100 full duplex 



In SPT/i219, there were CRC errors in speed 10/100 full duplex.
The solution given by the HW team is to increase the IPG from 8 to 0xC

Signed-off-by: default avatarYanir Lubetkin <yanirx.lubetkin@intel.com>
Tested-by: default avatarAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 6607c99e

drivers/net/ethernet/intel/e1000e/ich8lan.c

+7 −3
Original line number Original line Diff line number Diff line
@@ -1400,16 +1400,20 @@ static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw) 
	if (((hw->mac.type == e1000_pch2lan) ||

	if (((hw->mac.type == e1000_pch2lan) ||

	     (hw->mac.type == e1000_pch_lpt) ||

	     (hw->mac.type == e1000_pch_lpt) ||

	     (hw->mac.type == e1000_pch_spt)) && link) {

	     (hw->mac.type == e1000_pch_spt)) && link) {

		u32 reg;

		u16 speed, duplex;





		reg = er32(STATUS);

		e1000e_get_speed_and_duplex_copper(hw, &speed, &duplex);

		tipg_reg = er32(TIPG);

		tipg_reg = er32(TIPG);

		tipg_reg &= ~E1000_TIPG_IPGT_MASK;

		tipg_reg &= ~E1000_TIPG_IPGT_MASK;





		if (!(reg & (E1000_STATUS_FD | E1000_STATUS_SPEED_MASK))) {

		if (duplex == HALF_DUPLEX && speed == SPEED_10) {

			tipg_reg |= 0xFF;

			tipg_reg |= 0xFF;

			/* Reduce Rx latency in analog PHY */

			/* Reduce Rx latency in analog PHY */

			emi_val = 0;

			emi_val = 0;

		} else if (hw->mac.type == e1000_pch_spt &&

			   duplex == FULL_DUPLEX && speed != SPEED_1000) {

			tipg_reg |= 0xC;

			emi_val = 1;

		} else {

		} else {





			/* Roll back the default values */

			/* Roll back the default values */