Re: [PATCH 1/2] dt-bindings: phy: qcom: Add SA8797P eUSB2 PHY

[Konrad Dybcio]

On 10/26/26 10:41 AM, Hiren Gohel wrote:
> SA8797p platform abstracts resources such as resets, clocks and
> regulators in firmware. The SCMI firmware exposes multiple protocols to
> control such resources which are identified by protocol_id.
> 
> For this USB phy, 2 SCMI protocols are exposed by the firmware:
> * power domain management protocol (protocol_id=0x11)
> * performance domain management protocol (protocol_id=0x13)
> 
> The power domain has 2 indices: 'core' and 'transfer'.
> * core controls the regulators, the clocks and the reset
> * transfer only controls the clocks
> 
> For example, to power on/off the PHY, we should use the 'core' domain.
> To disable data transfer and keeping power enabled, we should use the
> 'transfer' domain.
> 
> Add a new binding for the Synopsys eusb2 High-Speed USB PHY
> found in SA8797P.
> 
> Note: the performance domain (0x13) exposes opaques values (0xa to 0x11)
> for which we don't have any information.

How come we don't have any information for what the firmware
that ""we"" wrote does?

Konrad