[PATCH v2 1/4] cpufreq: mediatek: CCI support SoC , the transition_delay set to 10 ms

From: Mark Tseng
Date: Fri Nov 08 2024 - 01:40:05 EST


SoC with CCI architecture should set transition_delay to 10 ms because
cpufreq need to call devfreq notifier in async mode. if delay less than
10 ms, it may get wrong OPP-level in devfreq passive governor.

Signed-off-by: Mark Tseng <chun-jen.tseng@xxxxxxxxxxxx>
---
drivers/cpufreq/mediatek-cpufreq.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c
index 663f61565cf7..f63183154e9a 100644
--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c
@@ -597,6 +597,9 @@ static int mtk_cpufreq_init(struct cpufreq_policy *policy)
policy->driver_data = info;
policy->clk = info->cpu_clk;

+ if (info->soc_data->ccifreq_supported)
+ policy->transition_delay_us = 10000;
+
return 0;
}

--
2.45.2