Re: [PATCH v2] arm64: dts: qcom: hamoa-iot-evk: switch typec0 to PS8830 retimer

On Mon, Aug 03, 2026 at 06:27:47AM -0700, Xin Liu wrote:
> The Hamoa IoT EVK hardware design uses a Parade PS8830 retimer on
> I2C3 for USB Type-C port 0. Describe the retimer and route typec0
> through it to enable USB 3.0 SuperSpeed and DisplayPort Alt Mode.
> 
> Supply the PS8830 from the existing vreg_rtmr0_* rails and remove
> their stale "Left unused" annotation.
> 
> The FSUSB42 SBU mux chip is present on the PCB but with all signal
> lines unconnected (NC), so remove the fsusb42 node and its pinctrl
> group.

Why is it still present on the PCB?

> 
> Tested on the Hamoa IoT EVK:
> 
> USB 3.0 SuperSpeed at 5 Gbps on typec0
> DisplayPort Alt Mode on typec0
> 
> Signed-off-by: Guodong Xu <[email protected]>
> Signed-off-by: Xin Liu <[email protected]>

Reviewed-by: Dmitry Baryshkov <[email protected]>


-- 
With best wishes
Dmitry