Re: [PATCH 0/5] Add support for Battery Status & Battery Caps AMS in TCPM

Amit Sunil Dhamne
2025-03-15T00:49:42Z

Hi Krzysztof,

Thanks for the review!

On 3/13/25 1:50 AM, Krzysztof Kozlowski wrote:
> On Wed, Mar 12, 2025 at 04:42:00PM -0700, Amit Sunil Dhamne wrote:
>> Support for Battery Status & Battery Caps messages in response to
>> Get_Battery_Status & Get_Battery_Cap request is required by USB PD devices
>> powered by battery, as per "USB PD R3.1 V1.8 Spec", "6.13 Message
>> Applicability" section. This patchset adds support for these AMSes
>> to achieve greater compliance with the spec.
> Which board uses it? I would be happy to see that connection between
> batteries and USB connector on the schematics of some real device. How
> does it look like?
Any board that uses a USB Type-C connector that supplies power into or
out of a battery while operating in sink or source mode respectively.
The VBUS is connected to the (battery + buck boost IC's CHGin/Vin) or a
companion IFPMIC connected to a battery.  In our board we have USB
Connector <-> IFPMIC <-> Battery.

Thanks,

Amit

> Best regards,
> Krzysztof
>