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Date: Wed, 11 Nov 2020 10:05:27 -0600
From: Bjorn Andersson <bjorn.andersson@...aro.org>
To: Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc: Felipe Balbi <balbi@...nel.org>,
Krzysztof Kozlowski <krzk@...nel.org>,
Florian Fainelli <f.fainelli@...il.com>,
Rob Herring <robh+dt@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Andy Gross <agross@...nel.org>,
Serge Semin <fancer.lancer@...il.com>,
linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 17/18] usb: dwc3: qcom: Detect DWC3 DT-nodes with
"usb"-prefixed names
On Wed 11 Nov 03:15 CST 2020, Serge Semin wrote:
> 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 <Sergey.Semin@...kalelectronics.ru>
Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Regards,
Bjorn
> ---
> 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 e1e78e9824b1..661263e62f21 100644
> --- a/drivers/usb/dwc3/dwc3-qcom.c
> +++ b/drivers/usb/dwc3/dwc3-qcom.c
> @@ -519,7 +519,8 @@ 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;
> --
> 2.28.0
>
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