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FROMGIT: 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>
(cherry picked from commit cefdd52fa0455c0555c30927386ee466a108b060
 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-next)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I42a9136864c883fd7ca8be7dedc325119fea21c4
This commit is contained in:
Wesley Cheng
2021-07-10 02:13:14 -07:00
committed by Todd Kjos
parent 79274dbb00
commit 5bb2dd8d39
1 changed files with 15 additions and 0 deletions
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15
drivers/usb/dwc3/dwc3-qcom.c
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@@ -640,6 +640,7 @@ 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_child_by_name(np, "dwc3");
@@ -648,6 +649,20 @@ 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);