linux-kernel - [RFC PATCH 4/4] ARM: dts: Add memory bus node for Exynos3250-based Rinato board

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Date:	Tue, 23 Dec 2014 20:44:37 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	myungjoo.ham@...sung.com
Cc:	kgene.kim@...sung.com, kyungmin.park@...sung.com,
	rafael.j.wysocki@...el.com, mark.rutland@....com,
	a.kesavan@...sung.com, tomasz.figa@...il.com,
	k.kozlowski@...sung.com, cw00.choi@...sung.com,
	inki.dae@...sung.com, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org
Subject: [RFC PATCH 4/4] ARM: dts: Add memory bus node for Exynos3250-based
 Rinato board

This patch adds the exynos memory-bus node which includes the regulator and
devfreq-event phandle. The devfreq-event phandle is used for the governor
of devfreq device and provide the current usage state of DMC/Internal
memory bus group.

Cc: Kukjin Kim <kgene.kim@...sung.com>
Cc: Myungjoo Ham <myungjoo.ham@...sung.com>
Cc: Kyungmin Park <kyungmin.park@...sung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
Acked-by: Kyungmin Park <kyungmin.park@...sung.com>
---
 arch/arm/boot/dts/exynos3250-rinato.dts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts
index 60948ae..6722555 100644
--- a/arch/arm/boot/dts/exynos3250-rinato.dts
+++ b/arch/arm/boot/dts/exynos3250-rinato.dts
@@ -564,6 +564,18 @@
 	};
 };
 
+&memory_bus_mif {
+	devfreq-events = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>;
+	vdd-mem-supply = <&buck1_reg>;
+	status = "okay";
+};
+
+&memory_bus_int {
+	devfreq-events = <&ppmu_leftbus_3>, <&ppmu_rightbus_3>;
+	vdd-mem-supply = <&buck3_reg>;
+	status = "okay";
+};
+
 &xusbxti {
 	clock-frequency = <24000000>;
 };
-- 
1.8.5.5

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