usb: dwc3: exynos: Add provision for AXI UpScaler clock on exynos7 (ed692a99) · Commits · 戴 / test

Documentation/devicetree/bindings/usb/exynos-usb.txt

+4 −2

Original line number	Diff line number	Diff line
		@@ -82,8 +82,10 @@ Example:

		DWC3
		Required properties:
		- compatible: should be "samsung,exynos5250-dwusb3" for USB 3.0 DWC3
		controller.
		- compatible: should be one of the following -
		"samsung,exynos5250-dwusb3": for USB 3.0 DWC3 controller on
		Exynos5250/5420.
		"samsung,exynos7-dwusb3": for USB 3.0 DWC3 controller on Exynos7.
		- #address-cells, #size-cells : should be '1' if the device has sub-nodes
		with 'reg' property.
		- ranges: allows valid 1:1 translation between child's address space and

drivers/usb/dwc3/dwc3-exynos.c

+17 −0

Original line number	Diff line number	Diff line
		@@ -35,6 +35,7 @@ struct dwc3_exynos {

		struct clk *clk;
		struct clk *susp_clk;
		struct clk *axius_clk;

		struct regulator *vdd33;
		struct regulator *vdd10;
		@@ -149,6 +150,17 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
		}
		clk_prepare_enable(exynos->susp_clk);

		if (of_device_is_compatible(node, "samsung,exynos7-dwusb3")) {
		exynos->axius_clk = devm_clk_get(dev, "usbdrd30_axius_clk");
		if (IS_ERR(exynos->axius_clk)) {
		dev_err(dev, "no AXI UpScaler clk specified\n");
		return -ENODEV;
		}
		clk_prepare_enable(exynos->axius_clk);
		} else {
		exynos->axius_clk = NULL;
		}

		exynos->vdd33 = devm_regulator_get(dev, "vdd33");
		if (IS_ERR(exynos->vdd33)) {
		ret = PTR_ERR(exynos->vdd33);
		@@ -190,6 +202,7 @@ err4:
		err3:
		regulator_disable(exynos->vdd33);
		err2:
		clk_disable_unprepare(exynos->axius_clk);
		clk_disable_unprepare(exynos->susp_clk);
		clk_disable_unprepare(exynos->clk);
		return ret;
		@@ -203,6 +216,7 @@ static int dwc3_exynos_remove(struct platform_device *pdev)
		platform_device_unregister(exynos->usb2_phy);
		platform_device_unregister(exynos->usb3_phy);

		clk_disable_unprepare(exynos->axius_clk);
		clk_disable_unprepare(exynos->susp_clk);
		clk_disable_unprepare(exynos->clk);

		@@ -214,6 +228,7 @@ static int dwc3_exynos_remove(struct platform_device *pdev)

		static const struct of_device_id exynos_dwc3_match[] = {
		{ .compatible = "samsung,exynos5250-dwusb3" },
		{ .compatible = "samsung,exynos7-dwusb3" },
		{},
		};
		MODULE_DEVICE_TABLE(of, exynos_dwc3_match);
		@@ -223,6 +238,7 @@ static int dwc3_exynos_suspend(struct device *dev)
		{
		struct dwc3_exynos *exynos = dev_get_drvdata(dev);

		clk_disable(exynos->axius_clk);
		clk_disable(exynos->clk);

		regulator_disable(exynos->vdd33);
		@@ -248,6 +264,7 @@ static int dwc3_exynos_resume(struct device *dev)
		}

		clk_enable(exynos->clk);
		clk_enable(exynos->axius_clk);

		/* runtime set active to reflect active state. */
		pm_runtime_disable(dev);

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