diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.14/0071-3-PCI-qcom-Fixed-IPQ806x-PCIE-init-changes.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-4.14/0071-3-PCI-qcom-Fixed-IPQ806x-PCIE-init-changes.patch | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/target/linux/ipq806x/patches-4.14/0071-3-PCI-qcom-Fixed-IPQ806x-PCIE-init-changes.patch b/target/linux/ipq806x/patches-4.14/0071-3-PCI-qcom-Fixed-IPQ806x-PCIE-init-changes.patch index 0c2910f3af..57ee082c83 100644 --- a/target/linux/ipq806x/patches-4.14/0071-3-PCI-qcom-Fixed-IPQ806x-PCIE-init-changes.patch +++ b/target/linux/ipq806x/patches-4.14/0071-3-PCI-qcom-Fixed-IPQ806x-PCIE-init-changes.patch @@ -13,7 +13,7 @@ Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org> +++ b/drivers/pci/dwc/pcie-qcom.c @@ -52,7 +52,13 @@ #define PCIE_CAP_CPL_TIMEOUT_DISABLE 0x10 - + #define PCIE20_PARF_PHY_CTRL 0x40 +#define PHY_CTRL_PHY_TX0_TERM_OFFSET_MASK (0x1f << 16) +#define PHY_CTRL_PHY_TX0_TERM_OFFSET(x) (x << 16) @@ -27,7 +27,7 @@ Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org> #define PCIE20_PARF_MHI_CLOCK_RESET_CTRL 0x174 @@ -83,6 +89,18 @@ #define DBI_RO_WR_EN 1 - + #define PERST_DELAY_US 1000 +/* PARF registers */ +#define PCIE20_PARF_PCS_DEEMPH 0x34 @@ -41,21 +41,21 @@ Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org> + +#define PCIE20_PARF_CONFIG_BITS 0x50 +#define PHY_RX0_EQ(x) (x << 24) - + #define PCIE20_v3_PARF_SLV_ADDR_SPACE_SIZE 0x358 #define SLV_ADDR_SPACE_SZ 0x10000000 -@@ -102,6 +120,7 @@ +@@ -102,6 +120,7 @@ struct qcom_pcie_resources_2_1_0 { struct regulator *vdda; struct regulator *vdda_phy; struct regulator *vdda_refclk; + uint8_t phy_tx0_term_offset; }; - + struct qcom_pcie_resources_1_0_0 { -@@ -179,6 +198,16 @@ - +@@ -179,6 +198,16 @@ struct qcom_pcie { + #define to_qcom_pcie(x) dev_get_drvdata((x)->dev) - + +static inline void +writel_masked(void __iomem *addr, u32 clear_mask, u32 set_mask) +{ @@ -69,10 +69,10 @@ Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org> static void qcom_ep_reset_assert(struct qcom_pcie *pcie) { gpiod_set_value_cansleep(pcie->reset, 1); -@@ -280,6 +309,10 @@ +@@ -280,6 +309,10 @@ static int qcom_pcie_get_resources_2_1_0 if (IS_ERR(res->ext_reset)) return PTR_ERR(res->ext_reset); - + + if (of_property_read_u8(dev->of_node, "phy-tx0-term-offset", + &res->phy_tx0_term_offset)) + res->phy_tx0_term_offset = 0; @@ -80,18 +80,18 @@ Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org> res->phy_reset = devm_reset_control_get_exclusive(dev, "phy"); return PTR_ERR_OR_ZERO(res->phy_reset); } -@@ -309,7 +342,6 @@ +@@ -309,7 +342,6 @@ static int qcom_pcie_init_2_1_0(struct q struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; - u32 val; int ret; - + ret = reset_control_assert(res->ahb_reset); -@@ -378,15 +410,26 @@ +@@ -378,15 +410,26 @@ static int qcom_pcie_init_2_1_0(struct q goto err_deassert_ahb; } - + - /* enable PCIe clocks and resets */ - val = readl(pcie->parf + PCIE20_PARF_PHY_CTRL); - val &= ~BIT(0); @@ -121,6 +121,6 @@ Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org> + /* Enable reference clock */ + writel_masked(pcie->parf + PCIE20_PARF_PHY_REFCLK, + REF_USE_PAD, REF_SSP_EN); - + ret = reset_control_deassert(res->phy_reset); if (ret) { |