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Message-ID: <20221201085423.10360-1-di.shen@unisoc.com>
Date: Thu, 1 Dec 2022 16:54:23 +0800
From: Di Shen <di.shen@...soc.com>
To: <rafael@...nel.org>, <daniel.lezcano@...aro.org>,
<amitk@...nel.org>, <rui.zhang@...el.com>
CC: <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<xuewen.yan@...soc.com>
Subject: [PATCH] thermal/of: Allow users to set governor for a thermal zone in DT
The governor of all thermal zones can be initialized in
thermal_zone_device_register_with_trips(), but it is always the
def_governor, this means the governor of all thermal zones are
the same.
Allow users to set governor for a specific thermal zone in DT, in
this way, users can use different policies for thermal management.
Signed-off-by: Di Shen <di.shen@...soc.com>
---
drivers/thermal/thermal_of.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index d4b6335ace15..5dd4101dffb6 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -355,6 +355,7 @@ static struct thermal_zone_params *thermal_of_parameters_init(struct device_node
int coef[2];
int ncoef = ARRAY_SIZE(coef);
int prop, ret;
+ const char *governor_name;
tzp = kzalloc(sizeof(*tzp), GFP_KERNEL);
if (!tzp)
@@ -365,6 +366,9 @@ static struct thermal_zone_params *thermal_of_parameters_init(struct device_node
if (!of_property_read_u32(np, "sustainable-power", &prop))
tzp->sustainable_power = prop;
+ if (!of_property_read_string(np, "policy", &governor_name))
+ strncpy(tzp->governor_name, governor_name, THERMAL_NAME_LENGTH);
+
/*
* For now, the thermal framework supports only one sensor per
* thermal zone. Thus, we are considering only the first two
--
2.17.1
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