[PATCH 0/3] add vdda-aux regulator support for QMP PHY on QCS6490

Konrad Dybcio konrad.dybcio at oss.qualcomm.com
Mon Nov 10 04:04:46 PST 2025


On 11/10/25 12:58 PM, Amit Singh wrote:
> The `vdda-aux` supply is necessary for proper power sequencing and reliable
> USB enumeration on platforms that provide this rail.
> 
> This series adds support for the `vdda-aux` regulator to the QMP PHY driver
> and updates the QCS6490 RB3 Gen2 device tree to provide the required
> auxiliary 3.0 V rail for stable USB PHY operation.
> Platforms that do not define `vdda-aux` remain unaffected.
> 
> Tested on RB3 Gen2 (QCS6490) platform to ensure proper USB enumeration and
> PHY stability.

I don't see this vreg going to the SoC on the schematics.

What is it actually powering?

Konrad



More information about the linux-phy mailing list