[resend from correct email this time.]
All,
On yesterday's call we brainstormed about what topics we want to talk
about on this call going forward. We also said we will continue with
the bi-weekly cadence for a few meetings and then reassess if we should
go monthly instead.
Attending:
* Loic
* Mark
* Etienne
* Arnaud
* Rob
* Ilias
* Bill
* Joakim
Here is the topic list in no specific order:
* New DT format
* Overlays in kernel
* overlays for PCI or USB devices (in an ACPI based system)
* DT for other OSes
* Zephyr DT schema conformance
* ABI stability & testing
* source code sync
* U-boot DT handling
We discussed the ABI issue a bit:
Rob: SystemReady IR 2.0 requires schema conformance
* There are still open questions
+ what version of schema
+ how many warnings allowed
* discussion mostly inside ARM
* 2.0 will come out this fall
Bill: But you can have two DTBs that full conform to schema and are
still ABI breaking
* Example: ST moving from direct kernel Power/clk control to SCMI
* Current recommendation from this group is make new kernels work both
ways until all firmware will have been updated
* The switch over time could be a couple of years for a GP platform.
Loic: It is very difficult to make a kernel that works both ways
* Not all customers see the benefit, (mostly security)
* Some want to keep doing things the old way
Bill: Even if everyone agrees to switch the transition period is hard to
handle in anything except a vertical OS.
We discussed recent status of U-boot DT handling a bit but need a more
structured discussion / investigation.
Bill
--
Bill Mills
Principal Technical Consultant, Linaro
+1-240-643-0836
TZ: US Eastern
Work Schedule: Tues/Wed/Thur
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