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Commit e08f5ce3 authored by Tony Truong's avatar Tony Truong Committed by Gerrit - the friendly Code Review server
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msm: pcie: update PCIe PHY for MSM8996v3/v4 based on si learning 



Based on si learning, new PCIe PHY settings improve the overall
stability of PCIe PHY on MSM8996 v3 and on v4. Thus, update the
PCIe PHY sequence for MSM8996 v3 and v4.

Change-Id: Ia1ab0af4c4dcf483d3b3dc05b7b13003de788f40
Signed-off-by: default avatarTony Truong <truong@codeaurora.org>
parent 0dc787c3

drivers/pci/host/pci-msm.c

+10 −0
Original line number Diff line number Diff line
@@ -1238,6 +1238,16 @@ static void pcie_pcs_port_phy_init(struct msm_pcie_dev_t *dev) 
		PCIE_N_POWER_STATE_CONFIG1(dev->rc_idx, common_phy),

		0xA3);



	if (dev->phy_ver == 0x3) {

		msm_pcie_write_reg(dev->phy,

			QSERDES_RX_N_SIGDET_LVL(dev->rc_idx, common_phy),

			0x19);



		msm_pcie_write_reg(dev->phy,

			PCIE_N_TXDEEMPH_M3P5DB_V0(dev->rc_idx, common_phy),

			0x0E);

	}



	msm_pcie_write_reg(dev->phy,

		PCIE_N_POWER_DOWN_CONTROL(dev->rc_idx, common_phy),

		0x03);