Demonstration of Complete Device Tree

Registered by Mounir Bsaibes on 2011-04-19

Pick an SoC and convert it to use device tree throughout

Blueprint information

Status:
Not started
Approver:
None
Priority:
Undefined
Drafter:
None
Direction:
Needs approval
Assignee:
None
Definition:
New
Series goal:
None
Implementation:
Unknown
Milestone target:
None

Related branches

Sprints

Whiteboard

This blueprint tracks the work required to implement and demonstrate
full device tree support for an SoC family. This differs from the
work described in tr-kernel-dt-board-desc-n-implementation[1] in that
this work is to describing the internal details of an SoC family,
while tr-kernel-dt-board-desc-n-implementation covers describing the
board and the connections to the SoC.

[1] https://blueprints.launchpad.net/linaro/+spec/tr-kernel-dt-board-desc-n-implementation/

The purpose of this work is to investigate the tasks required to fully
describe an SoC using the devices tree, and to evaluate how 'deeply' a
device tree description should describe the internals of an SoC
family. The goal is to be able to provide good recommendations to SoC
subarch maintainers about how and when to put SoC internal details
into the device tree bindings.

(?)

Work Items

Work items:
Select an SoC family for this demonstration: TODO
Implement board support work items from [1] for selected SoC family: TODO
Implement common struct clk changes for selected SoC family: TODO
Draft and implement DT bindings for SoC clock device: TODO
Instantiate clock tree from DT data: TODO
Draft and implement DT bindings for SoC power management: TODO
Instantiate power management objects from DT data: TODO
Remove static device registrations (platform, i2c, spi, etc) and register devices from DT: TODO
Review resulting patches and document recommended practises: TODO

Dependency tree

* Blueprints in grey have been implemented.

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