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* [PATCH v5 09/10] usb: dwc3: qcom: Detect DWC3 DT-nodes with "usb"-prefixed names
       [not found] <>
@ 2021-02-08 13:51 ` Serge Semin
  0 siblings, 0 replies; only message in thread
From: Serge Semin @ 2021-02-08 13:51 UTC (permalink / raw)
  To: Felipe Balbi, Bjorn Andersson, Krzysztof Kozlowski,
	Florian Fainelli, Rob Herring, Greg Kroah-Hartman, Andy Gross
  Cc: Serge Semin, Serge Semin, linux-arm-msm, linux-usb, linux-kernel

In accordance with the USB HCD/DRD schema all the USB controllers are
supposed to have DT-nodes named with prefix "^usb(@.*)?".  Since the
existing DT-nodes will be renamed in a subsequent patch let's first make
sure the DWC3 Qualcomm driver supports them and second falls back to the
deprecated naming so not to fail on the legacy DTS-files passed to the
newer kernels.

Signed-off-by: Serge Semin <>
Reviewed-by: Bjorn Andersson <>
 drivers/usb/dwc3/dwc3-qcom.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index c703d552bbcf..49ad8d507d37 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -630,7 +630,8 @@ static int dwc3_qcom_of_register_core(struct platform_device *pdev)
 	struct device		*dev = &pdev->dev;
 	int			ret;
-	dwc3_np = of_get_child_by_name(np, "dwc3");
+	dwc3_np = of_get_child_by_name(np, "usb") ?:
+		  of_get_child_by_name(np, "dwc3");
 	if (!dwc3_np) {
 		dev_err(dev, "failed to find dwc3 core child\n");
 		return -ENODEV;

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2021-02-08 13:51 ` [PATCH v5 09/10] usb: dwc3: qcom: Detect DWC3 DT-nodes with "usb"-prefixed names Serge Semin

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