Re: [PATCH v6 1/4] Runtime Interpreted Power Sequences

From: Tomi Valkeinen
Date: Thu Sep 13 2012 - 01:45:43 EST

On Wed, 2012-09-12 at 18:57 +0900, Alexandre Courbot wrote:
> Some device drivers (panel backlights especially) need to follow precise
> sequences for powering on and off, involving gpios, regulators, PWMs
> with a precise powering order and delays to respect between each steps.
> These sequences are board-specific, and do not belong to a particular
> driver - therefore they have been performed by board-specific hook
> functions to far.

The sequences are not board-specific, they are device (backlight, etc.)
specific. The sequences have been handled in board-specific hook
functions so far because there hasn't been proper drivers for the

If I were to take the same panel (and backlight) you have and install it
on my board, I would need the same power sequence.


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