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From: Felipe Balbi <>
To: Sandeep Maheswaram <>,
	Greg Kroah-Hartman <>,
	Stephen Boyd <>,
	Doug Anderson <>,
	Matthias Kaehlcke <>
	Manu Gautam <>,
	Sandeep Maheswaram <>
Subject: Re: [PATCH v2] usb: dwc3: core: Add shutdown callback for dwc3
Date: Wed, 14 Apr 2021 11:12:02 +0300	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

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Sandeep Maheswaram <> writes:

> This patch adds a shutdown callback to USB DWC core driver to ensure that
> it is properly shutdown in reboot/shutdown path. This is required
> where SMMU address translation is enabled like on SC7180
> SoC and few others. If the hardware is still accessing memory after
> SMMU translation is disabled as part of SMMU shutdown callback in
> system reboot or shutdown path, then IOVAs(I/O virtual address)
> which it was using will go on the bus as the physical addresses which
> might result in unknown crashes (NoC/interconnect errors).
> Signed-off-by: Sandeep Maheswaram <>

Acked-by: Felipe Balbi <>


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  reply	other threads:[~2021-04-14  8:12 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-14  6:03 Sandeep Maheswaram
2021-04-14  8:12 ` Felipe Balbi [this message]
2021-04-14 16:02 ` Stephen Boyd
2021-05-26 19:03 ` patchwork-bot+linux-arm-msm

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