Re: Multiple generic PHY instances for DWC3 USB IP

From: Arnd Bergmann
Date: Wed Apr 04 2018 - 04:43:38 EST

On Wed, Apr 4, 2018 at 10:00 AM, Felipe Balbi
<felipe.balbi@xxxxxxxxxxxxxxx> wrote:
> Hi,
> Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> writes:
>>>> Each DWC3 instance is connected with
>>>> multiple HS PHYs and multiple SS PHYs,
>>>> depending on the number of ports.
>>> in that case, you shouldn't need dwc3 at all. A Host-only dwc3 is xHCI
>>> compliant. If you really don't have the gadget block, there's no need
>>> for you to use dwc3. Just use xhci-plat directly.
>> Sorry, I was misunderstanding.
>> Some of our SoCs support gadget,
>> so we need to use the dwc3 driver.
> fair enough. Now we need to figure out how to pass multiply PHYs to a
> multi-port dwc3 instance.
> Kishon, any ideas? How do you think DT should look like?

See this series from Martin Blumenstingl: