diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index aa88548a7057..270d502b8cd5 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -45,7 +45,13 @@ #define PCIE_CAP_CPL_TIMEOUT_DISABLE 0x10 #define PCIE20_PARF_PHY_CTRL 0x40 +#define PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK GENMASK(20, 16) +#define PHY_CTRL_PHY_TX0_TERM_OFFSET(x) ((x) << 16) + #define PCIE20_PARF_PHY_REFCLK 0x4C +#define PHY_REFCLK_SSP_EN BIT(16) +#define PHY_REFCLK_USE_PAD BIT(12) + #define PCIE20_PARF_DBI_BASE_ADDR 0x168 #define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16C #define PCIE20_PARF_MHI_CLOCK_RESET_CTRL 0x174 @@ -343,9 +349,18 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie) writel(PHY_RX0_EQ(4), pcie->parf + PCIE20_PARF_CONFIG_BITS); } + if (of_device_is_compatible(node, "qcom,pcie-ipq8064")) { + /* set TX termination offset */ + val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL); + val &= ~PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK; + val |= PHY_CTRL_PHY_TX0_TERM_OFFSET(7); + writel(val, pcie->parf + PCIE20_PARF_PHY_CTRL); + } + /* enable external reference clock */ val = readl(pcie->parf + PCIE20_PARF_PHY_REFCLK); - val |= BIT(16); + val &= ~PHY_REFCLK_USE_PAD; + val |= PHY_REFCLK_SSP_EN; writel(val, pcie->parf + PCIE20_PARF_PHY_REFCLK); ret = reset_control_deassert(res->phy_reset);