Re: [PATCH V1 4/4] phy: qcom-qmp-ufs: read max-microamp values from device tree

[Mark Brown <broonie@kernel.org>]

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On Thu, Aug 07, 2025 at 11:26:17PM +0530, Nitin Rawat wrote:

> 1. Regulator and PMIC configurations are board-specific, meaning they can
> vary significantly across different platforms. For example, some boards may
> use different generations of UFS devices — such as UFS 2.x — which come with
> distinct power and load requirements and some with UFS3.x which has it own
> power/load requirement.

Requirements from generations of UFS devices presumably come from the
UFS spec and should just be known though?

> 2. UFS PHY load and PMIC requirements also varies across targets, depending
> on the underlying technology node and the specific PHY capabilities. These
> differences can be influenced by the MIPI version or other implementation
> details.

If you've got non-enumerable PHYs that have a big impact that's a much
clearer use case for putting things in DT.

> Given this variability, expressing these requirements in the device tree
> allows for a flexible and accurate way to describe board-specific
> constraints without hardcoding them into the driver.

There's still the issue with making this a thing for all regulators, not
just for this specific device.

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