2010:embedded_topics [Linux Plumbers Conf Wiki]

http://etherpad.osuosl.org/lpc2010-embedded

Agenda

Embedded (ab)use of the Device Model (1 hr; moderator: Grant Likely)
- Review of device model (GregKH? Kay?) 10-15 min
- Current use cases problems/solutions/issues
  - omap_device solution to power management (Kevin Hillman) 10 min
  - Registration of devices on i2c, spi & mdio busses (Grant Likely?) 10 min
- Common pain points (15-20 min)
  - Problem of static platform_device tables
  - Problem of multi-parent dependancies
    - Devices only have one parent; no established pattern for devices that need to wait for another device to become ready before they can be probed.
    - GPIOs, IRQs have no explicit ordering dependencies
  - Problem of initcall ordering constraints
    - spi & i2c drivers getting moved to earlier initcalls to workaround lack of dependencies
  - Problem of subarch specific APIs adding complexity to drivers
    - hwspinlock for OMAP
    - omap_device
- Solution discussion (10-15min)
IPC for Asynchronous Multi Processing (AMP) (Moderator: Ohad)
- Use cases (10 min each; 30 min total)
  - Renesas ARM+SH (Magnus Damm, Paul Mundt)
  - Texas Instruments OMAP ARM+DSP and Syslink solution (Ohad)
  - Freescale 8-way PowerPC
- Common requirements
- Discuss possible common solutions
Boot infrastructure for multiplatform kernels (Moderator: Jeremy Kerr)
- Introduction (Jeremy Kerr - problem statement)
- Board identification
- Device enumeration and Device Tree
- Boot interface
- x86/ARM/MIPS/PowerPC specific issue and constraints
Interesting Tools techniques (Moderator: Tim Bird)
- Android fastboot and adb
- Perhaps this should be in lighting talk format?

Possible track for capturing embedded/small system topics

Standardize boot interface for ARM
Device driver and the device tree
Core plumbing required in small systems.
Running mainstream distros on ARM devices - Mike Rapoport 2010/06/10 15:02
custom busses vs. extending platform bus Kevin Hilman 2010/08/10

proposer: Grant Likely