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Groups > linux.kernel > #1375479
| From | Chanwoo Choi <cw00.choi@samsung.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v9 12/20] ARM: dts: Add DMC bus frequency for exynos3250-rinato/monk |
| Date | 2016-04-11 06:10 +0200 |
| Message-ID | <rmBkL-88x-33@gated-at.bofh.it> (permalink) |
| References | <rmBb4-7ND-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
This patch adds the DMC (Dynamic Memory Controller) bus frequency node
which includes the devfreq-events and regulator properties. The bus
frequency support the DVFS (Dynamic Voltage Frequency Scaling) feature
with ondemand governor.
The devfreq-events (ppmu_dmc0*) can monitor the utilization of DMC bus
on runtime and the buck1_reg (VDD_MIF power line) supplies the power to
the DMC block.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
---
arch/arm/boot/dts/exynos3250-monk.dts | 6 ++++++
arch/arm/boot/dts/exynos3250-rinato.dts | 6 ++++++
2 files changed, 12 insertions(+)
diff --git a/arch/arm/boot/dts/exynos3250-monk.dts b/arch/arm/boot/dts/exynos3250-monk.dts
index 9e2840b59ae8..1fd7ecb5c415 100644
--- a/arch/arm/boot/dts/exynos3250-monk.dts
+++ b/arch/arm/boot/dts/exynos3250-monk.dts
@@ -156,6 +156,12 @@
};
};
+&bus_dmc {
+ devfreq-events = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>;
+ vdd-supply = <&buck1_reg>;
+ status = "okay";
+};
+
&cpu0 {
cpu0-supply = <&buck2_reg>;
};
diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts
index 1f102f3a1ab1..5175bd7e015f 100644
--- a/arch/arm/boot/dts/exynos3250-rinato.dts
+++ b/arch/arm/boot/dts/exynos3250-rinato.dts
@@ -147,6 +147,12 @@
};
};
+&bus_dmc {
+ devfreq-events = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>;
+ vdd-supply = <&buck1_reg>;
+ status = "okay";
+};
+
&cpu0 {
cpu0-supply = <&buck2_reg>;
};
--
1.9.1
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[PATCH v9 00/20] PM / devferq: Add generic exynos bus frequency driver and new passive governor Chanwoo Choi <cw00.choi@samsung.com> - 2016-04-11 06:10 +0200
Re: [PATCH v9 00/20] PM / devferq: Add generic exynos bus frequency driver and new passive governor Chanwoo Choi <cw00.choi@samsung.com> - 2016-04-11 06:10 +0200
Re: [PATCH v9 00/20] PM / devferq: Add generic exynos bus frequency driver and new passive governor Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2016-04-11 22:00 +0200
Re: [PATCH v9 00/20] PM / devferq: Add generic exynos bus frequency driver and new passive governor Chanwoo Choi <cwchoi00@gmail.com> - 2016-04-11 22:20 +0200
[PATCH v9 02/20] PM / devfreq: exynos: Add documentation for generic exynos bus frequency driver Chanwoo Choi <cw00.choi@samsung.com> - 2016-04-11 06:10 +0200
[PATCH v9 06/20] PM / devfreq: exynos: Add support of bus frequency of sub-blocks using passive governor Chanwoo Choi <cw00.choi@samsung.com> - 2016-04-11 06:10 +0200
[PATCH v9 01/20] PM / devfreq: exynos: Add generic exynos bus frequency driver Chanwoo Choi <cw00.choi@samsung.com> - 2016-04-11 06:10 +0200
Re: [PATCH v9 01/20] PM / devfreq: exynos: Add generic exynos bus frequency driver Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2016-04-12 09:30 +0200
[PATCH v9 12/20] ARM: dts: Add DMC bus frequency for exynos3250-rinato/monk Chanwoo Choi <cw00.choi@samsung.com> - 2016-04-11 06:10 +0200
[PATCH v9 16/20] ARM: dts: Add bus nodes using VDD_MIF for Exynos4210 Chanwoo Choi <cw00.choi@samsung.com> - 2016-04-11 06:10 +0200
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