linux-kernel - Re: [PATCH v3 5/5] usb: typec: tcpm/tcpci_maxim: deprecate WAR for setting charger mode

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Message-ID: <da028427208fc4d515060375fc95f1cc0f64e2ca.camel@linaro.org>
Date: Mon, 05 Jan 2026 16:47:58 +0000
From: André Draszik <andre.draszik@...aro.org>
To: amitsd@...gle.com, Sebastian Reichel <sre@...nel.org>, Rob Herring	
 <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley	
 <conor+dt@...nel.org>, Lee Jones <lee@...nel.org>, Greg Kroah-Hartman	
 <gregkh@...uxfoundation.org>, Badhri Jagan Sridharan <badhri@...gle.com>, 
 Heikki Krogerus <heikki.krogerus@...ux.intel.com>, Peter Griffin
 <peter.griffin@...aro.org>, Tudor Ambarus	 <tudor.ambarus@...aro.org>, Alim
 Akhtar <alim.akhtar@...sung.com>
Cc: linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-usb@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, RD
 Babiera <rdbabiera@...gle.com>, Kyle Tso <kyletso@...gle.com>
Subject: Re: [PATCH v3 5/5] usb: typec: tcpm/tcpci_maxim: deprecate WAR for
 setting charger mode

On Sat, 2025-12-27 at 00:04 +0000, Amit Sunil Dhamne via B4 Relay wrote:
> From: Amit Sunil Dhamne <amitsd@...gle.com>
> 
> TCPCI maxim driver directly writes to the charger's register space to
> set charger mode depending on the power role. As MAX77759 chg driver
> exists, this WAR is not required.
> 
> Instead, use a regulator interface to source vbus when typec is in
> source power mode. In other power modes, this regulator will be turned
> off if active.
> 
> Signed-off-by: Amit Sunil Dhamne <amitsd@...gle.com>
> ---
>  drivers/usb/typec/tcpm/tcpci_maxim.h      |  1 +
>  drivers/usb/typec/tcpm/tcpci_maxim_core.c | 54 +++++++++++++++++++------------
>  2 files changed, 34 insertions(+), 21 deletions(-)

Reviewed-by: André Draszik <andre.draszik@...aro.org>