On Mon, Nov 27 2023, Cornelia Huck <coh...@redhat.com> wrote: > On Mon, Nov 27 2023, Haixu Cui <quic_haix...@quicinc.com> wrote: > >> On 11/24/2023 11:46 PM, Cornelia Huck wrote: >>> On Fri, Nov 24 2023, Haixu Cui <quic_haix...@quicinc.com> wrote: >>>> +The \field{chip_select_max_number} is the maximum number of chipselect >>>> the host SPI controller supports. >>> >>> "chipselect" is probably a known term for people familiar with SPI -- is >>> there any definition of those terms that the spec can point to? >> >> Just as Mark said, there is no formal spec for SPI, so no standard spec >> for such terms referring to. The same for CPHA/CPOL/LSB/MSB, please see >> below. > > If we have nothing to point to, it is probably best to simply > expand/explain the terms on their first usage. > >>> Can we point to some documentation that explains CPHA and CPOL? >> >> Here. No standard SPI spec to point to. CPOL/CPHA have definitions in >> wikipedia(Clock polarity and phase chapter): >> >> https://en.wikipedia.org/wiki/Serial_Peripheral_Interface >> >> How about copying some concise information from wikipedia as Note? Or is >> referring to such webpage acceptable in this spec. > > Not sure if we can do an outright copy (licence compatibility), but > paraphrasing should be fine. (I'd rather not directly reference the > site, because the content is not guaranteed to be stable, but we could > maybe add it as "further reading".)
Looking again, the kernel doc referenced by Mark (https://www.kernel.org/doc/html/v6.6/driver-api/spi.html) might also be a good candidate, especially as we can refer to a specific version. --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscr...@lists.oasis-open.org For additional commands, e-mail: virtio-dev-h...@lists.oasis-open.org