Re: [PATCH] I2C: JZ4780: Fix bug for Ingenic X1000.

[Zhou Yanjie]

Hi Wolfram,

On 2021/3/31 下午3:18, Wolfram Sang wrote:
> Hi,
>
> > > Any write operation? I wonder then why nobody noticed before?
> >
> > The standard I2C communication should look like this:
> >
> > Read:
> >
> > device_addr + w, reg_addr, device_addr + r, data;
> >
> > Write:
> >
> > device_addr + w, reg_addr, data;
> >
> >
> > But without this patch, it looks like this:
> >
> > Read:
> >
> > device_addr + w, reg_addr, device_addr + r, data;
> >
> > Write:
> >
> > device_addr + w, reg_addr, device_addr + w, data;
> >
> > This is clearly not correct.
> Thanks for the additional information! I understand now. I added a bit
> of this to the commit message of v2 to explain the situation.

Thanks!


Best regards!