Re: [PATCH] [PATCH v7] USB: serial: pl2303: Add new PID to support PL2303HXN (TYPE_HXN)

[Johan Hovold <johan@kernel.org>]

On Wed, Sep 25, 2019 at 05:36:23PM +0800, Charles Yeh wrote:
> Johan Hovold <johan@kernel.org> 於 2019年9月25日 週三 下午4:06寫道：
> > Meanwhile you can double check that you've considered all
> > review-feedback you've gotten so far.
> >
> > I don't think you ever replied to my last comment about the reset
> > register and why I thought using plain write (not read, mask, write) was
> > the right thing to do.
> >
> > Does the register always read back as 0, or does it read back as the
> > last value written?
> 
> Charles Ans:
> I just asked my colleague, who is RD of design PL2303 hardware,
> His answer is to read 0 forever.
> 
> Does the register always read back as 0, or does it read back as the
> last value written?
> Ans: Yes, the register"#define PL2303_HXN_RESET_REG 0x07" always
> read back as 0.
> 
> I hope the above content has an answer to your question:
> If there are other questions, please try to raise it.. thanks

It does, thanks for confirming.

Johan