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From: Manu Gautam <>
	Greg Kroah-Hartman <>
Subject: Re: [PATCH v3 2/3] usb: dwc3: Add Qualcomm DWC3 glue driver
Date: Tue, 8 May 2018 09:36:48 +0530	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On 5/5/2018 12:18 AM, Manu Gautam wrote:
> DWC3 controller on Qualcomm SOCs has a Qscratch wrapper.
> Some of its uses are described below resulting in need to
> have a separate glue driver instead of using dwc3-of-simple:
>  - It exposes register interface to override vbus-override
>    and lane0-pwr-present signals going to hardware. These
>    must be updated in peripheral mode for DWC3 if vbus lines
>    are not connected to hardware block. Otherwise RX termination
>    in SS mode or DP pull-up is not applied by device controller.
>  - pwr_events_irq_stat support to check if USB2 PHY is in L2 state
>    before glue driver proceeds with suspend.
>  - Support for wakeup interrupts lines that are asserted whenever
>    there is any wakeup event on USB3 or USB2 bus.
>  - Support to replace pip3 clock going to DWC3 with utmi clock
>    for hardware configuration where SSPHY is not used with DWC3.
> Signed-off-by: Manu Gautam <>
> +static const struct of_device_id dwc3_qcom_of_match[] = {
> +	{ .compatible = "qcom,dwc3" },

I should also add SOC specific compatibles.
Will do that in next patch.

The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

  reply	other threads:[~2018-05-08  4:06 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-04 18:48 [PATCH v3 0/3] usb: dwc3: support for Qualcomm DWC3 glue Manu Gautam
2018-05-04 18:48 ` [PATCH v3 1/3] dt-bindings: usb: Update documentation for Qualcomm DWC3 driver Manu Gautam
2018-05-07 16:17   ` Rob Herring
2018-05-04 18:48 ` [PATCH v3 2/3] usb: dwc3: Add Qualcomm DWC3 glue driver Manu Gautam
2018-05-08  4:06   ` Manu Gautam [this message]
2018-05-04 18:48 ` [PATCH v3 3/3] usb: dwc3: core: Suspend PHYs on runtime suspend in host mode Manu Gautam

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