[PATCH v6 17/19] PM / devfreq: tegra30: Increase sampling period to 16ms
From: Dmitry Osipenko
Date: Sun Aug 11 2019 - 17:25:04 EST
Increase sampling period by 4ms to get a nicer pow2 value, converting
diving into shifts in the code. That's more preferable for Tegra30 that
doesn't have hardware divider instructions because of older Cortex-A9 CPU.
In a result boosting events are delayed by 4ms, which is not sensible in
practice at all.
Reviewed-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
---
drivers/devfreq/tegra30-devfreq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c
index 9753985c9131..8adc0ff48b45 100644
--- a/drivers/devfreq/tegra30-devfreq.c
+++ b/drivers/devfreq/tegra30-devfreq.c
@@ -69,7 +69,7 @@
* translates to 2 ^ (K_VAL + 1). ex: 2 ^ (6 + 1) = 128
*/
#define ACTMON_AVERAGE_WINDOW_LOG2 6
-#define ACTMON_SAMPLING_PERIOD 12 /* ms */
+#define ACTMON_SAMPLING_PERIOD 16 /* ms */
#define KHZ 1000
--
2.22.0