diff options
Diffstat (limited to 'target/linux/ipq806x/patches-5.4/0071-6-PCI-qcom-Force-GEN1-support.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-5.4/0071-6-PCI-qcom-Force-GEN1-support.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-5.4/0071-6-PCI-qcom-Force-GEN1-support.patch b/target/linux/ipq806x/patches-5.4/0071-6-PCI-qcom-Force-GEN1-support.patch new file mode 100644 index 0000000000..c1461e68c2 --- /dev/null +++ b/target/linux/ipq806x/patches-5.4/0071-6-PCI-qcom-Force-GEN1-support.patch @@ -0,0 +1,59 @@ +From 4910cfd150342ec7b038892262923c725a9c4001 Mon Sep 17 00:00:00 2001 +From: Sham Muthayyan <smuthayy@codeaurora.org> +Date: Wed, 7 Sep 2016 16:44:28 +0530 +Subject: PCI: qcom: Force GEN1 support + +Change-Id: Ica54ddb737d7b851469deab1745f54bf431bd3f0 +Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org> +--- + +--- a/drivers/pci/controller/dwc/pcie-qcom.c ++++ b/drivers/pci/controller/dwc/pcie-qcom.c +@@ -122,6 +122,8 @@ + #define PCIE20_v3_PARF_SLV_ADDR_SPACE_SIZE 0x358 + #define SLV_ADDR_SPACE_SZ 0x10000000 + ++#define PCIE20_LNK_CONTROL2_LINK_STATUS2 0xA0 ++ + #define QCOM_PCIE_2_1_0_MAX_SUPPLY 3 + struct qcom_pcie_resources_2_1_0 { + struct clk *iface_clk; +@@ -212,6 +214,7 @@ struct qcom_pcie { + struct phy *phy; + struct gpio_desc *reset; + const struct qcom_pcie_ops *ops; ++ uint32_t force_gen1; + }; + + #define to_qcom_pcie(x) dev_get_drvdata((x)->dev) +@@ -504,6 +507,11 @@ static int qcom_pcie_init_2_1_0(struct q + + /* wait for clock acquisition */ + usleep_range(1000, 1500); ++ if (pcie->force_gen1) { ++ writel_relaxed((readl_relaxed( ++ pcie->pci->dbi_base + PCIE20_LNK_CONTROL2_LINK_STATUS2) | 1), ++ pcie->pci->dbi_base + PCIE20_LNK_CONTROL2_LINK_STATUS2); ++ } + + + /* Set the Max TLP size to 2K, instead of using default of 4K */ +@@ -1367,6 +1375,8 @@ static int qcom_pcie_probe(struct platfo + struct dw_pcie *pci; + struct qcom_pcie *pcie; + int ret; ++ uint32_t force_gen1 = 0; ++ struct device_node *np = pdev->dev.of_node; + + pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL); + if (!pcie) +@@ -1397,6 +1407,9 @@ static int qcom_pcie_probe(struct platfo + goto err_pm_runtime_put; + } + ++ of_property_read_u32(np, "force_gen1", &force_gen1); ++ pcie->force_gen1 = force_gen1; ++ + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "parf"); + pcie->parf = devm_ioremap_resource(dev, res); + if (IS_ERR(pcie->parf)) { |