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

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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: Wesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/1625908395-5498-6-git-send-email-wcheng@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wesley Cheng 2021-07-10 02:13:14 -07:00 • committed by Greg Kroah-Hartman
parent fe794e3954
commit cefdd52fa0
1 changed files with 15 additions and 0 deletions
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15
drivers/usb/dwc3/dwc3-qcom.c
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@ -645,6 +645,7 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev)
struct dwc3_qcom *qcom = platform_get_drvdata(pdev); struct dwc3_qcom *qcom = platform_get_drvdata(pdev);
struct device_node *np = pdev->dev.of_node, *dwc3_np; struct device_node *np = pdev->dev.of_node, *dwc3_np;
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
struct property *prop;
int ret; int ret;
dwc3_np = of_get_compatible_child(np, "snps,dwc3"); 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; 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); ret = of_platform_populate(np, NULL, NULL, dev);
if (ret) { if (ret) {
dev_err(dev, "failed to register dwc3 core - %d\n", ret); dev_err(dev, "failed to register dwc3 core - %d\n", ret);