Re: [PATCH v2] usb: dwc3: core: Add shutdown callback for dwc3

[Felipe Balbi]

Sandeep Maheswaram <sanm@xxxxxxxxxxxxxx> 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 <sanm@xxxxxxxxxxxxxx>

Acked-by: Felipe Balbi <balbi@xxxxxxxxxx>

-- 
balbi

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