Messages in this thread | | | Date | Fri, 25 Apr 2014 10:28:06 +0530 | From | Tushar Behera <> | Subject | Re: [PATCH] i2c: exynos5: Initialise Samsung High Speed I2C controller early |
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On 04/24/2014 09:55 PM, Mark Brown wrote: > On Thu, Apr 24, 2014 at 08:18:36PM +0530, Naveen Krishna Chatradhi wrote: >> This patch moves initialization code to subsys_initcall() to ensure >> that the i2c bus is available early so the regulators can be quickly >> probed and available for other devices on their probe() call. > >> Such solution has been proposed by Mark Brown to fix the problem of >> the regulators not beeing available on the peripheral device probe(): >> http://lists.infradead.org/pipermail/linux-arm-kernel/2010-March/011971.html > > What specifically is this needed for? We *should* be able to use > deferred probe for most things, but I know that not all subsystems are > able to yet. >
DRM-Exynos is one such sub-system right now that doesn't handle deferred probe well. That is one of the reasons for this patch.
-- Tushar Behera
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