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usb: dwc3: core: add dt support for dwc3 core
Added dt support for dwc3 core and update the documentation with device tree binding information. Getting a PHY is now done using devm_usb_get_phy_by_phandle() for dt boot. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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2 changed files with 42 additions and 4 deletions
22
Documentation/devicetree/bindings/usb/dwc3.txt
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22
Documentation/devicetree/bindings/usb/dwc3.txt
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@ -0,0 +1,22 @@
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synopsys DWC3 CORE
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DWC3- USB3 CONTROLLER
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Required properties:
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- compatible: must be "synopsys,dwc3"
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- reg : Address and length of the register set for the device
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- interrupts: Interrupts used by the dwc3 controller.
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- usb-phy : array of phandle for the PHY device
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Optional properties:
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- tx-fifo-resize: determines if the FIFO *has* to be reallocated.
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This is usually a subnode to DWC3 glue to which it is connected.
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dwc3@4a030000 {
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compatible = "synopsys,dwc3";
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reg = <0x4a030000 0xcfff>;
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interrupts = <0 92 4>
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usb-phy = <&usb2_phy>, <&usb3,phy>;
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tx-fifo-resize;
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};
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@ -420,13 +420,19 @@ static int dwc3_probe(struct platform_device *pdev)
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return -ENOMEM;
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}
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dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
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if (node) {
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dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0);
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dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1);
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} else {
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dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
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dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
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}
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if (IS_ERR_OR_NULL(dwc->usb2_phy)) {
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dev_err(dev, "no usb2 phy configured\n");
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return -EPROBE_DEFER;
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}
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dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
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if (IS_ERR_OR_NULL(dwc->usb3_phy)) {
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dev_err(dev, "no usb3 phy configured\n");
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return -EPROBE_DEFER;
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@ -450,8 +456,7 @@ static int dwc3_probe(struct platform_device *pdev)
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else
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dwc->maximum_speed = DWC3_DCFG_SUPERSPEED;
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if (of_get_property(node, "tx-fifo-resize", NULL))
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dwc->needs_fifo_resize = true;
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dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize");
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pm_runtime_enable(dev);
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pm_runtime_get_sync(dev);
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@ -580,11 +585,22 @@ static int dwc3_remove(struct platform_device *pdev)
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return 0;
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}
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#ifdef CONFIG_OF
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static const struct of_device_id of_dwc3_match[] = {
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{
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.compatible = "synopsys,dwc3"
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},
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{ },
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};
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MODULE_DEVICE_TABLE(of, of_dwc3_match);
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#endif
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static struct platform_driver dwc3_driver = {
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.probe = dwc3_probe,
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.remove = dwc3_remove,
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.driver = {
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.name = "dwc3",
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.of_match_table = of_match_ptr(of_dwc3_match),
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},
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};
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