Commit cefdd52f authored by Wesley Cheng's avatar Wesley Cheng Committed by Greg Kroah-Hartman
Browse files

usb: dwc3: dwc3-qcom: Enable tx-fifo-resize property by default 



In order to take advantage of the TX fifo resizing logic, manually add
these properties to the DWC3 child node by default.  This will allow
the DWC3 gadget to resize the TX fifos for the IN endpoints, which
help with performance.

Signed-off-by: default avatarWesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/1625908395-5498-6-git-send-email-wcheng@codeaurora.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fe794e39

drivers/usb/dwc3/dwc3-qcom.c

+15 −0
Original line number Diff line number Diff line
@@ -645,6 +645,7 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev) 
	struct dwc3_qcom	*qcom = platform_get_drvdata(pdev);

	struct device_node	*np = pdev->dev.of_node, *dwc3_np;

	struct device		*dev = &pdev->dev;

	struct property		*prop;

	int			ret;



	dwc3_np = of_get_compatible_child(np, "snps,dwc3");
@@ -653,6 +654,20 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev) 
		return -ENODEV;

	}



	prop = devm_kzalloc(dev, sizeof(*prop), GFP_KERNEL);

	if (!prop) {

		ret = -ENOMEM;

		dev_err(dev, "unable to allocate memory for property\n");

		goto node_put;

	}



	prop->name = "tx-fifo-resize";

	ret = of_add_property(dwc3_np, prop);

	if (ret) {

		dev_err(dev, "unable to add property\n");

		goto node_put;

	}



	ret = of_platform_populate(np, NULL, NULL, dev);

	if (ret) {

		dev_err(dev, "failed to register dwc3 core - %d\n", ret);