Johan Hovold <jo...@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 Charles.
