Re: [RFC 0/3] Enable firmware-managed USB resources on Qcom targets

[Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>]

On 05/03/2024 17:57, Sriram Dash wrote:
> Some target systems allow multiple resources to be managed by firmware.

Which? Why this is so vague...

> On these targets, tasks related to clocks, regulators, resets, and
> interconnects can be delegated to the firmware, while the remaining
> responsibilities are handled by Linux.
> 
> To support the management of partial resources in Linux and leave the rest
> to firmware, multiple power domains are introduced. Each power domain can
> manage one or more resources, depending on the specific use case.
> 
> These power domains handle SCMI calls to the firmware, enabling the
> activation and deactivation of firmware-managed resources.
> 
> The driver is responsible for managing multiple power domains and
> linking them to consumers as needed. Incase there is only single
> power domain, it is considered to be a standard GDSC hooked on to
> the qcom dt node which is read and assigned to device structure
> (by genpd framework) before the driver probe even begins.

This will break the ABI. Sorry, come with an ABI stable solution.

Best regards,
Krzysztof