usb: dwc3: qcom: Detect DWC3 DT-nodes using compatible string

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 fix the DWC3
Qcom-specific code to detect the DWC3 sub-node just by checking its
compatible string to match the "snps,dwc3". The semantic of the code
won't change seeing all the DWC USB3 nodes are supposed to have the
compatible property with any of those strings set.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210409113029.7144-7-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index 726d5048d87c69356f3efbf881d1e9170f52b0f6..49e6ca94486ddb6d1562f3d887f9ad67866c8239 100644 (file)
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -647,7 +647,7 @@ 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_compatible_child(np, "snps,dwc3");
        if (!dwc3_np) {
                dev_err(dev, "failed to find dwc3 core child\n");
                return -ENODEV;