Hi Hans,
> > > + * registers
> > > + */
> > > +/* I2C MMIO Address Constants */
> > > +#define ZXI2C_CR_L 0x00
> > > +#define ZXI2C_CPU_RDY BIT(3)
> > > +#define ZXI2C_TX_END BIT(2)
> > > +#define ZXI2C_RX_ACK BIT(1)
> > The register layout looks similar to the i2c-wmt driver. Could this
> > driver maybe be reused for your hardware? I'll stop reviewing here
> > because we need to have that clear first.
> >
> > Thank you and happy hacking,
> >
> > Wolfram
> >
>
> I just learned that they are indeed derived from the same VIA I2C IP.
> The relationship between WonderMedia/VIA/Zhaoxin looks like this:
> * The i2c-wmt.c driver is used on the WonderMedia/VT8500 platform,
> an ARM-based SOC from VIA. This SOC hasn't been updated in years.
> Its MAINTAINERS are also Orphan.
> * Lots of VIA IP is now owned by Zhaoxin, including I2C, SMBus, etc.
> Zhaoxin adds some new features on the basis of the original I2C IP,
> such as FIFO mode. And there are plans to continue adding new
> features.
>
> Based on this information, we thought it might be more maintainable
> to create a new driver file.
I think I commented about this some times ago but then forgot.
The two drivers are, indeed, very similar.
We could eventually create a *-common.{c,h} file.
Andi
