From: Anson Huang <b20788@freescale.com>
Date: Thu, 9 Jan 2014 08:03:16 +0000 (+0800)
Subject: ARM: imx: add cpuidle support for i.mx6sl
X-Git-Tag: v3.15-rc1~79^2~19^2~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=751f7e999afcef157527f5f6f06529c93f8a4022;p=pandora-kernel.git

ARM: imx: add cpuidle support for i.mx6sl

Add cpuidle support for i.MX6SL, currently only support
two cpuidle levels(ARM wfi and WAIT mode), and add software
workaround for WAIT mode errata as below:

ERR005311 CCM: After exit from WAIT mode, unwanted interrupt(s) taken
          during WAIT mode entry process could cause cache memory
          corruption.

Software workaround:
    To prevent this issue from occurring, software should ensure that
the ARM to IPG clock ratio is less than 12:5 (that is < 2.4x), before
entering WAIT mode.

Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---

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