From mboxrd@z Thu Jan  1 00:00:00 1970
From: Felipe Balbi <felipe.balbi@linux.intel.com>
Subject: Re: Multiple generic PHY instances for DWC3 USB IP
Date: Wed, 04 Apr 2018 11:00:54 +0300
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To: Masahiro Yamada <yamada.masahiro@socionext.com>, Kishon Vijay Abraham I <kishon@ti.com>
Cc: linux-usb@vger.kernel.org, Lee Jones <lee.jones@linaro.org>, Arnd Bergmann <arnd@arndb.de>, Rob Herring <robh+dt@kernel.org>, devicetree@vger.kernel.org, Andrew Lunn <andrew@lunn.ch>, Masami Hiramatsu <masami.hiramatsu@linaro.org>, Jassi Brar <jaswinder.singh@linaro.org>, Kunihiko Hayashi <hayashi.kunihiko@socionext.com>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Mathias Nyman <mathias.nyman@linux.intel.com>
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Hi,

Masahiro Yamada <yamada.masahiro@socionext.com> 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?

-- 
balbi