linux-kernel - Re: [PATCH v2 4/5] arm64: dts: exynos: gs101-oriole: enable Maxim max77759 TCPCi

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Message-ID: <CADrjBPpC-qo22ZH1s=KoRgnnj6g90N6ADvU=HkRPJmwOBYAXoA@mail.gmail.com>
Date: Sat, 7 Dec 2024 22:24:30 +0000
From: Peter Griffin <peter.griffin@...aro.org>
To: André Draszik <andre.draszik@...aro.org>
Cc: Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Alim Akhtar <alim.akhtar@...sung.com>, Tudor Ambarus <tudor.ambarus@...aro.org>, 
	Sam Protsenko <semen.protsenko@...aro.org>, Will McVicker <willmcvicker@...gle.com>, 
	Roy Luo <royluo@...gle.com>, kernel-team@...roid.com, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v2 4/5] arm64: dts: exynos: gs101-oriole: enable Maxim
 max77759 TCPCi

On Tue, 3 Dec 2024 at 12:40, André Draszik <andre.draszik@...aro.org> wrote:
>
> On Pixel 6 (and Pro), a max77759 companion PMIC for USB Type-C
> applications is used, which contains four functional blocks (at
> distinct I2C addresses):
>   * top (including GPIO)
>   * charger
>   * fuel gauge
>   * TCPCi
>
> While in the same package, TCPCi and Fuel Gauge have separate I2C
> addresses, interrupt lines and interrupt status registers and can be
> treated independently.
>
> The TCPCi is required to detect and handle connector orientation in
> Pixel's USB PHY driver, and to configure the USB controller's role
> (host vs device).
>
> This change adds the TCPCi part as it can be independent and doesn't
> need a top-level MFD.
>
> Signed-off-by: André Draszik <andre.draszik@...aro.org>
>
> ---

Reviewed-by: Peter Griffin <peter.griffin@...aro.org>
Tested-by: Peter Griffin <peter.griffin@...aro.org>

Notes on testing:

Verified that type-c orientation notifications are sent to usb phy
driver and that Pixel is enumerated as a USB device with both cable
orientations

[..]