Re: [PATCH 0/4] Initial patch set for PURWA-IOT-EVK

[Yijie Yang]

On 12/22/2025 5:18 PM, Dmitry Baryshkov wrote:
> On Mon, Dec 22, 2025 at 02:03:25PM +0800, YijieYang wrote:
> > From: Yijie Yang <yijie.yang@xxxxxxxxxxxxxxxx>
> >
> > Introduce the device tree, DT bindings, and driver modifications required
> > to bring up the PURWA-IOT-EVK evaluation board.
> >
> > Purwa and Hamoa are IoT variants of x1p42100 and x1e80100, both based on
> > the IQ-X SoC series. Consequently, the two common files in this series are
> > prefixed with 'iq-x-iot' to reflect this relationship.
> >
> > PURWA-IOT-EVK shares almost the same hardware design with HAMOA-IOT-EVK,
> > except for differences in the BOM. As a result, most of the DTS can be
> > shared between them.
> >
> > The changes focus on two key hardware components: the PURWA-IOT-SOM and
> > the PURWA-IOT-EVK carrier board.
> >
> > Hardware delta between Hamoa and Purwa:
> > - Display: Purwa’s display uses a different number of clocks, and its
> >    frequency differs from Hamoa.
> > - GPU: Purwa requires a separate firmware compared to Hamoa.
>
> Is it just a separate firmware, or does it use a different _GPU_?

It uses a different GPU.

> > - USB0: Purwa uses a PS8833 retimer, while Hamoa uses an FSUSB42 as the
> >    SBU switch.

--
Best Regards,
Yijie