On Thu, Sep 6, 2018 at 2:43 PM Przemyslaw Gaj [off-list ref] wrote:

Hi Boris, Vitor,

This repository does not contain full kernel sources, but it should be enough to discuss mastership request feature.
https://github.com/przemekgaj/i3c-linux/commit/d54fe68a9d3e573c0c454a2c6f1afafc20142ec5

Please keep in mind that this is initial version, but mastership works correctly. I added one property to DT to reflect relationship between masters.
It is possible to request mastership on demand (using sysfs. Useful in case when Linux machine is equipped only with secondary master controller) or automatically change operation mode when device driver wants to read/write something from/to device.

I'm sure I will have to rework something because this was implemented on sources from PATCH v4. I saw that Boris released v7 yesterday :)

Can you explain the reason for having a user space interface and DT property?
I thought we had concluded earlier that we wouldn't need that, but it's possible
that I missed something in the discussion since then.

      Arnd