From: Johan Hovold <jhovold@gmail.com>
Date: Thu, 28 Jun 2012 10:20:21 +0000 (+0200)
Subject: mfd: Add support for enabling tps65910 external 32-kHz oscillator
X-Git-Tag: v3.6-rc1~47^2~62
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=712db99df155eeef7bbab8677d8a02d0eff50d11;p=pandora-kernel.git

mfd: Add support for enabling tps65910 external 32-kHz oscillator

Add flag to platform data to enable external 32-kHz crystal oscillator
(or square wave) input.

The tps6591x can use either an internal 32-kHz RC oscillator or an
external crystal (or square wave) to generate the 32-kHz clock.

The default setting depends on the selected boot mode. In boot mode 00
the internal RC oscillator is used at power-on, but the external crystal
oscillator (or square wave) can be enabled by clearing the ck32k_ctrl
flag in the device control register.

Note that there is no way to switch from the external crystal oscillator
to the internal RC oscillator.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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