CHROMIUM: cpufreq: set cpu min frequency through complex-usb-min-frequency property
in rk3288 platform when use some tpye of usb speaker it request cpu frequency
larger than 1.2Ghz, so we get the min frequency from complex-usb-min-frequency
property, and update cpu frequency policy when we need it, note: if thermal
throttling, and complex-usb-min-frequency larger than throtting frequency,
we will use throttling frquency as minium frequency.
BUG=chrome-os-partner:43539
TEST=on mickey board, plug in usb speaker, run command:
cat /sys/device/system/cpu/cpu0/cpufreq/scaling_min_freq
get result: 1200000
if temperature over 82C, get the result:816000
Change-Id: I4d2111f93aa71a33f9a193be3592d0225ab1dffe
Signed-off-by: Lin Huang <hl@rock-chips.com>
Reviewed-on: https://chromium-review.googlesource.com/303300
Reviewed-by: Douglas Anderson <dianders@chromium.org>
2 files changed
