ipq806x: add patch to fix broken usb3

Due to changes in syscon driver, the phy dwc3 driver
needs to use device_node_to_regmap since it has to skip
the new introduced clk check. This fix broken usb3 on this
target.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>

diff --git a/target/linux/ipq806x/patches-5.4/0077-phy-dwc3-qcom-fix-kernel-5_4.patch b/target/linux/ipq806x/patches-5.4/0077-phy-dwc3-qcom-fix-kernel-5_4.patch
new file mode 100644 (file)
index 0000000..11893ea
--- /dev/null
+++ b/target/linux/ipq806x/patches-5.4/0077-phy-dwc3-qcom-fix-kernel-5_4.patch
@@ -0,0 +1,29 @@
+--- a/drivers/phy/qualcomm/phy-qcom-dwc3.c
++++ b/drivers/phy/qualcomm/phy-qcom-dwc3.c
+@@ -491,7 +491,6 @@ static int qcom_dwc3_phy_probe(struct pl
+       struct qcom_dwc3_usb_phy        *phy_dwc3;
+       struct phy_provider             *phy_provider;
+       struct phy                      *generic_phy;
+-      struct resource                 *res;
+       const struct of_device_id *match;
+       const struct qcom_dwc3_phy_drvdata *data;
+       struct device_node *np;
+@@ -505,7 +504,17 @@ static int qcom_dwc3_phy_probe(struct pl
+ 
+       phy_dwc3->dev = &pdev->dev;
+ 
+-      phy_dwc3->base = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, "regmap");
++      np = of_parse_phandle(pdev->dev.of_node, "regmap", 0);
++      if (!np)
++              return -ENODEV;
++
++      if (!of_device_is_compatible(np, "syscon"))
++              return -EINVAL;
++
++      phy_dwc3->base = device_node_to_regmap(np);
++
++      of_node_put(np);
++
+       if (IS_ERR_OR_NULL(phy_dwc3->base))
+               return PTR_ERR_OR_ZERO(phy_dwc3->base) ? : -EINVAL;
+