tree b9146d34035427fb95b6fe13c78ed2a747d65a84
parent 00960ba1f8a1d3882b20ef00d63b3bfb38d2f39d
author Derek Basehore <dbasehore@chromium.org> 1524520162 -0700
committer Lin Huang <hl@rock-chips.com> 1526373079 +0800

rockchip/rk3399: Add watchdog support in pmusram

To catch early hangs in resume, this sets up the watchdog before
anything else in the pmusram code (ignoring setting up the stack...).
This uses hard coded settings for the watchdog until the proper
watchdog restore later on in the firmware/kernel.

This also restores the old watchdog register values before the PLLs
are restored to make sure we don't temporarily switch over to a 1/3s
timeout on the watchdog when the pclk_wdt goes from 4MHz to 100MHz.

Change-Id: I8f7652089a88783271b17482117b4609330abe80
Signed-off-by: Derek Basehore <dbasehore@chromium.org>