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soc: rockchip: system_monitor: set the initial state to low temprature

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The all cpus of big cluster will be closed when suspend, and cpu is
booted before thermal when resume, the cpu frequency and voltage will be
changed before thermal start, if the ambient temperature is low, the
voltage may not be enough, so this path set the initial state to low
temperature state and change the OPP Table before cpufreq start.

Change-Id: I37ae1086e05df4dc4391f80ce5cc25a22d217b4a
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
This commit is contained in:
Finley Xiao
2020-01-09 17:16:55 +08:00
committed by Tao Huang
parent 3390f8aa54
commit 78a2ebce79
1 changed files with 22 additions and 4 deletions
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26
drivers/soc/rockchip/rockchip_system_monitor.c
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@@ -900,18 +900,36 @@ rockchip_system_monitor_wide_temp_init(struct monitor_dev_info *info)
{
int ret, temp;
/*
* set the init state to low temperature that the voltage will be enough
* when cpu up at low temperature.
*/
if (!info->is_low_temp) {
if (info->opp_table)
rockchip_adjust_low_temp_opp_volt(info, true);
info->wide_temp_limit = info->low_limit;
info->is_low_temp = true;
}
ret = thermal_zone_get_temp(system_monitor->tz, &temp);
if (ret || temp == THERMAL_TEMP_INVALID) {
dev_err(info->dev,
"failed to read out thermal zone (%d)\n", ret);
return;
}
if (temp < info->low_temp) {
if (temp > info->high_temp) {
if (info->opp_table)
rockchip_adjust_low_temp_opp_volt(info, true);
info->wide_temp_limit = info->low_limit;
} else if (temp > info->high_temp) {
rockchip_adjust_low_temp_opp_volt(info, false);
info->is_low_temp = false;
info->wide_temp_limit = info->high_limit;
info->is_high_temp = true;
} else if (temp > (info->low_temp + info->temp_hysteresis)) {
if (info->opp_table)
rockchip_adjust_low_temp_opp_volt(info, false);
info->is_low_temp = false;
info->wide_temp_limit = 0;
}
}