Re: [PATCH 3/4] platform/chrome: cros_ec_typec: Configure muxes at start of port update

Tzung-Bi Shih
2022-02-09T04:08:25Z

On Tue, Feb 08, 2022 at 02:58:51PM -0800, Prashant Malani wrote:
> On Tue, Feb 8, 2022 at 10:35 AM Prashant Malani <pmalani@chromium.org> wrote:
> > In general, I think you may benefit from reading:
> > - The entire cros_ec_typec driver
> > - The EC Type C state machine [2] and interfaces [3][4]
> >
> > The above 2 will help understand how this entire stack works. Without
> > it, it is challenging
> > to process the flow (just from code review).
> >
> > If you have further questions our would like to better understand the
> > drivers, feel free to reach
> > out to me over IM/email. I don't think public list code review is the
> > best option for this
> > sort of explanation.
> >
> > [1] https://elixir.bootlin.com/linux/latest/source/drivers/platform/chrome/cros_ec_typec.c#L549
> > [2] https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/common/usbc/
> > [3] https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/driver/usb_mux/usb_mux.c
> > [4] https://source.chromium.org/chromiumos/chromiumos/codesearch/+/main:src/platform/ec/common/usb_pd_host_cmd.c

Thanks for the link pointers. It would take me some time to understand the
background for reviewing the patch though.

But in general, I would suggest to change the title for a stronger signal
that it fixes something (per [1]). Otherwise, the title and the description
in cover letter looks like a move refactor.

[1]: https://patchwork.kernel.org/project/chrome-platform/patch/20220207214026.1526151-4-pmalani@chromium.org/#24727676