diff options
| author | Dmitry Osipenko | 2019-11-05 00:56:16 +0300 |
|---|---|---|
| committer | Chanwoo Choi | 2019-11-06 12:04:01 +0900 |
| commit | fee22854c0273569836de2039d9c432ea4df2cfc (patch) | |
| tree | 379d1c497d6ecfc49c42157c5ebd78f2b63c7015 /drivers/devfreq | |
| parent | f61ee201068ac844cc8ed7f9112e47f3452f8262 (diff) | |
PM / devfreq: tegra30: Tune up MCCPU boost-down coefficient
MCCPU boosts up very aggressively by 800% and boosts down very mildly by
10%. This doesn't work well when system is idling because the very slow
de-boosting results in lots of consecutive-down interrupts, in result
memory stays clocked high and CPU doesn't enter deepest idling state
instead of keeping memory at lowest freq and having CPU cluster turned
off. A more faster de-boosting fixes the case of idling system and doesn't
affect the case of an active system.
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq')
| -rw-r--r-- | drivers/devfreq/tegra30-devfreq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c index e44f1a48f838..0b65f89d74d5 100644 --- a/drivers/devfreq/tegra30-devfreq.c +++ b/drivers/devfreq/tegra30-devfreq.c @@ -124,7 +124,7 @@ static const struct tegra_devfreq_device_config actmon_device_configs[] = { .offset = 0x200, .irq_mask = 1 << 25, .boost_up_coeff = 800, - .boost_down_coeff = 90, + .boost_down_coeff = 40, .boost_up_threshold = 27, .boost_down_threshold = 10, .avg_dependency_threshold = 16000, /* 16MHz in kHz units */ |