linux-kernel - Re: [PATCH v2] arm64: dts: mediatek: mt8390-genio-common: Set ssusb2 default dual role mode to host

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Message-Id: <174652097261.119919.932042428704090741.b4-ty@collabora.com>
Date: Tue, 06 May 2025 10:42:52 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 Louis-Alexis Eyraud <louisalexis.eyraud@...labora.com>
Cc: kernel@...labora.com, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v2] arm64: dts: mediatek: mt8390-genio-common: Set
 ssusb2 default dual role mode to host

On Fri, 02 May 2025 15:17:19 +0200, Louis-Alexis Eyraud wrote:
> On the Mediatek Genio 510-EVK and 700-EVK boards, ssusb2 controller is
> one but has two ports: one is routed to the M.2 slot, the other is on
> the RPi header who does support full OTG.
> Since Mediatek Genio 700-EVK USB support was added, dual role mode
> property is set to otg for ssusb2. This config prevents the M.2
> Wifi/Bluetooth module, present on those boards and exposing Bluetooth
> as an USB device to be properly detected at startup as the default role
> is device.
> To keep the OTG functionality and make the M.2 module be detected at
> the same time, add role-switch-default-mode property set to host and
> also fix the polarity of GPIO associated to the USB connector, so the
> ssusb2 controller role is properly set to host when the other port is
> unused.
> 
> [...]

Applied to v6.15-next/dts64, thanks!

[1/1] arm64: dts: mediatek: mt8390-genio-common: Set ssusb2 default dual role mode to host
      commit: f9167f15dd4e70b124023a2f7ba2b09401b3b6ff

Cheers,
Angelo