diff options
| author | Tony Truong <truong@codeaurora.org> | 2015-09-16 17:28:14 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:09:30 -0700 |
| commit | aedf29f7b606dc44722ccad38828cbc27009eaa5 (patch) | |
| tree | cc2c29e69444f40969a952007d2198e778d484f0 | |
| parent | 7a18379427ef530d391cd414be9bf89d241cba56 (diff) | |
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: Tony Truong <truong@codeaurora.org>
| -rw-r--r-- | drivers/pci/host/pci-msm.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/pci/host/pci-msm.c b/drivers/pci/host/pci-msm.c index 716e7d3c7aae..e4732fd493f8 100644 --- a/drivers/pci/host/pci-msm.c +++ b/drivers/pci/host/pci-msm.c @@ -1239,6 +1239,16 @@ 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); |