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Groups > linux.kernel > #1292750 > unrolled thread
| Started by | Dawei Chien <dawei.chien@mediatek.com> |
|---|---|
| First post | 2015-12-16 05:00 +0100 |
| Last post | 2015-12-16 05:20 +0100 |
| Articles | 3 — 2 participants |
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[PATCH v5 0/3] thermal: mediatek: Add cpu dynamic power cooling model. Dawei Chien <dawei.chien@mediatek.com> - 2015-12-16 05:00 +0100
[PATCH v5 1/3] thermal: mediatek: Add cpu dynamic power cooling model. Dawei Chien <dawei.chien@mediatek.com> - 2015-12-16 05:10 +0100
Re: [PATCH v5 0/3] thermal: mediatek: Add cpu dynamic power cooling model. Viresh Kumar <viresh.kumar@linaro.org> - 2015-12-16 05:20 +0100
| From | Dawei Chien <dawei.chien@mediatek.com> |
|---|---|
| Date | 2015-12-16 05:00 +0100 |
| Subject | [PATCH v5 0/3] thermal: mediatek: Add cpu dynamic power cooling model. |
| Message-ID | <qGbpT-4Ya-3@gated-at.bofh.it> |
Use Intelligent Power Allocation (IPA) technical to add dynamic power model for binding CPU thermal zone. The power allocator governor allocates power budget to control CPU temperature. Power Allocator governor is able to keep SOC temperature within a defined temperature range to avoid SOC overheat and keep it's performance. mt8173-cpufreq.c need to register its' own power model with power allocator thermal governor, so that power allocator governor can allocates suitable power budget to control CPU temperature. Binding document is refer to this patchset https://lkml.org/lkml/2015/11/30/239 Change since V4: 1. Remove unnecessary error-checking for mt8173-cpufreq.c 2. Initializing variable capacitance with 0 Change since V3: 1. Remove static power model 2. Split V3's device tree in two for thermal zones and dynamic power models respectively Change since V2: 1. Move dynamic/static power model in device tree Change since V1: 1. Include mt8171.h and sort header file for mt8173.dtsi Dawei Chien (3): thermal: mediatek: Add cpu dynamic power cooling model. arm64: dts: mt8173: Add thermal zone node. arm64: dts: mt8173: Add dynamic power node. arch/arm64/boot/dts/mediatek/mt8173.dtsi | 47 ++++++++++++++++++++++++++++++ drivers/cpufreq/mt8173-cpufreq.c | 12 ++++++-- 2 files changed, 57 insertions(+), 2 deletions(-) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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| From | Dawei Chien <dawei.chien@mediatek.com> |
|---|---|
| Date | 2015-12-16 05:10 +0100 |
| Subject | [PATCH v5 1/3] thermal: mediatek: Add cpu dynamic power cooling model. |
| Message-ID | <qGbzz-5gw-1@gated-at.bofh.it> |
| In reply to | #1292750 |
MT8173 cpufreq driver select of_cpufreq_power_cooling_register registering
cooling devices with dynamic power coefficient.
Signed-off-by: Dawei Chien <dawei.chien@mediatek.com>
---
This patch is base on patchset:
https://lkml.org/lkml/2015/11/17/251
---
drivers/cpufreq/mt8173-cpufreq.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mt8173-cpufreq.c
index 83001dc..d00bab5 100644
--- a/drivers/cpufreq/mt8173-cpufreq.c
+++ b/drivers/cpufreq/mt8173-cpufreq.c
@@ -263,17 +263,24 @@ static int mtk_cpufreq_set_target(struct cpufreq_policy *policy,
return 0;
}
+#define DYNAMIC_POWER "dynamic-power-coefficient"
+
static void mtk_cpufreq_ready(struct cpufreq_policy *policy)
{
struct mtk_cpu_dvfs_info *info = policy->driver_data;
struct device_node *np = of_node_get(info->cpu_dev->of_node);
+ u32 capacitance = 0;
if (WARN_ON(!np))
return;
if (of_find_property(np, "#cooling-cells", NULL)) {
- info->cdev = of_cpufreq_cooling_register(np,
- policy->related_cpus);
+ of_property_read_u32(np, DYNAMIC_POWER, &capacitance);
+
+ info->cdev = of_cpufreq_power_cooling_register(np,
+ policy->related_cpus,
+ capacitance,
+ NULL);
if (IS_ERR(info->cdev)) {
dev_err(info->cpu_dev,
--
1.7.9.5
--
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| From | Viresh Kumar <viresh.kumar@linaro.org> |
|---|---|
| Date | 2015-12-16 05:20 +0100 |
| Subject | Re: [PATCH v5 0/3] thermal: mediatek: Add cpu dynamic power cooling model. |
| Message-ID | <qGbJf-5jU-5@gated-at.bofh.it> |
| In reply to | #1292750 |
On 16-12-15, 11:59, Dawei Chien wrote: > Use Intelligent Power Allocation (IPA) technical to add dynamic power model > for binding CPU thermal zone. The power allocator governor allocates power > budget to control CPU temperature. > > Power Allocator governor is able to keep SOC temperature within a defined > temperature range to avoid SOC overheat and keep it's performance. > mt8173-cpufreq.c need to register its' own power model with power allocator > thermal governor, so that power allocator governor can allocates suitable > power budget to control CPU temperature. > > Binding document is refer to this patchset > https://lkml.org/lkml/2015/11/30/239 > > Change since V4: > 1. Remove unnecessary error-checking for mt8173-cpufreq.c > 2. Initializing variable capacitance with 0 Acked-by: Viresh Kumar <viresh.kumar@linaro.org> -- viresh -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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