Best practice device tree design for display subsystems/DRM

Russell King rmk at arm.linux.org.uk
Tue Jul 2 11:43:05 PDT 2013


On Tue, Jul 02, 2013 at 11:43:59AM -0600, Daniel Drake wrote:
> exynos seems to take a the same approach. Components are separate in
> the device tree, and each component is implemented as a platform
> driver or i2c driver. However all the drivers are built together in
> the same module, and the module_init sequence is careful to initialise
> all of the output component drivers before loading the DRM driver. The
> output component driver store their findings in global structures.

I will point out that relying on driver probing orders has already been
stated by driver model people to be unsafe.  This is why I will not
adopt such a solution for my driver; it is a bad design.

-- 
Russell King


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