Re: [PATCH v2] arm64: dts: qcom: hamoa-iot-evk: Add vbus regulator support for Type-A ports

From: Krishna Kurapati
Date: Tue Dec 09 2025 - 03:02:46 EST




On 12/9/2025 1:22 PM, Dmitry Baryshkov wrote:
On Tue, Dec 09, 2025 at 09:47:01AM +0530, Krishna Kurapati wrote:
The Multiport controller on Hamoa EVK platform is connected to Two Type-A
ports. VBUS for each of these ports are provided by a TPS2559QWDRCTQ1
regulator, controlled from PMIC GPIOs.

Add the necessary regulators and GPIO configuration to power these.

Should this also include corresponding USB-A connector devices? See
qcs6490-radxa-dragon-q6a.dts for the example of how to describe them.


Hi Dmitry,

I see same discussion that came up when we were trying to upstream TypeA connectors of SA8295:

https://lore.kernel.org/all/CAA8EJppf+j6H8vPOrer1Oj6SuM=qHKXoBahtCaCr7an-cbpyOQ@xxxxxxxxxxxxxx/

There is no entity (either phy or dwc3) as of today that can read the vbus from connector-A node and use it. So keeping these regulators always on for now.

Regards,
Krishna,


Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
Signed-off-by: Krishna Kurapati <krishna.kurapati@xxxxxxxxxxxxxxxx>
---
Changes in v2:
- Re-ordered nodes to be in sorted order.

Link to v1:
https://lore.kernel.org/all/20251208085152.2597818-1-krishna.kurapati@xxxxxxxxxxxxxxxx/

arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 37 ++++++++++++++++++++++
1 file changed, 37 insertions(+)