* [PATCH v4 04/20] ARM: dts: Add DMC bus frequency for exynos3250-rinato/monk
2015-12-14 6:38 [PATCH v4 00/20] PM / devferq: Add generic exynos bus frequency driver and new passive governor Chanwoo Choi
@ 2015-12-14 6:38 ` Chanwoo Choi
0 siblings, 0 replies; 2+ messages in thread
From: Chanwoo Choi @ 2015-12-14 6:38 UTC (permalink / raw)
To: myungjoo.ham, k.kozlowski, kgene
Cc: kyungmin.park, robh+dt, pawel.moll, mark.rutland, ijc+devicetree,
galak, linux, tjakobi, linux.amoon, cw00.choi, linux-kernel,
linux-pm, linux-samsung-soc, devicetree
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>
---
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 443a35085846..456844a81189 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 3e64d5dcdd60..d6bb990ce931 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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v4 04/20] ARM: dts: Add DMC bus frequency for exynos3250-rinato/monk
@ 2015-12-14 8:43 MyungJoo Ham
0 siblings, 0 replies; 2+ messages in thread
From: MyungJoo Ham @ 2015-12-14 8:43 UTC (permalink / raw)
To: 최찬우,
크쉬시토프, kgene@kernel.org
Cc: 박경민, robh+dt@kernel.org, pawel.moll@arm.com,
mark.rutland@arm.com, ijc+devicetree@hellion.org.uk,
galak@codeaurora.org, linux@arm.linux.org.uk,
tjakobi@math.uni-bielefeld.de, linux.amoon@gmail.com,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org
>
> 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>
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2015-12-14 8:43 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-12-14 8:43 [PATCH v4 04/20] ARM: dts: Add DMC bus frequency for exynos3250-rinato/monk MyungJoo Ham
-- strict thread matches above, loose matches on Subject: below --
2015-12-14 6:38 [PATCH v4 00/20] PM / devferq: Add generic exynos bus frequency driver and new passive governor Chanwoo Choi
2015-12-14 6:38 ` [PATCH v4 04/20] ARM: dts: Add DMC bus frequency for exynos3250-rinato/monk Chanwoo Choi
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).