linux-kernel - [RFCv4 PATCH 03/34] arm: vexpress: Add CPU clock-frequencies to TC2 device-tree

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Date:	Tue, 12 May 2015 20:38:38 +0100
From:	Morten Rasmussen <morten.rasmussen@....com>
To:	peterz@...radead.org, mingo@...hat.com
Cc:	vincent.guittot@...aro.org,
	Dietmar Eggemann <Dietmar.Eggemann@....com>,
	yuyang.du@...el.com, preeti@...ux.vnet.ibm.com,
	mturquette@...aro.org, rjw@...ysocki.net,
	Juri Lelli <Juri.Lelli@....com>, sgurrappadi@...dia.com,
	pang.xunlei@....com.cn, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, morten.rasmussen@....com
Subject: [RFCv4 PATCH 03/34] arm: vexpress: Add CPU clock-frequencies to TC2 device-tree

From: Dietmar Eggemann <dietmar.eggemann@....com>

To enable the parsing of clock frequency and cpu efficiency values
inside parse_dt_topology [arch/arm/kernel/topology.c] to scale the
relative capacity of the cpus, this property has to be provided within
the cpu nodes of the dts file.

The patch is a copy of commit 8f15973ef8c3 ("ARM: vexpress: Add CPU
clock-frequencies to TC2 device-tree") taken from Linaro Stable Kernel
(LSK) massaged into mainline.

Cc: Jon Medhurst <tixy@...aro.org>
Cc: Russell King <linux@....linux.org.uk>

Signed-off-by: Dietmar Eggemann <dietmar.eggemann@....com>
---
 arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts
index 7a2aeac..76613b2 100644
--- a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts
+++ b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts
@@ -39,6 +39,7 @@
 			reg = <0>;
 			cci-control-port = <&cci_control1>;
 			cpu-idle-states = <&CLUSTER_SLEEP_BIG>;
+			clock-frequency = <1000000000>;
 		};
 
 		cpu1: cpu@1 {
@@ -47,6 +48,7 @@
 			reg = <1>;
 			cci-control-port = <&cci_control1>;
 			cpu-idle-states = <&CLUSTER_SLEEP_BIG>;
+			clock-frequency = <1000000000>;
 		};
 
 		cpu2: cpu@2 {
@@ -55,6 +57,7 @@
 			reg = <0x100>;
 			cci-control-port = <&cci_control2>;
 			cpu-idle-states = <&CLUSTER_SLEEP_LITTLE>;
+			clock-frequency = <800000000>;
 		};
 
 		cpu3: cpu@3 {
@@ -63,6 +66,7 @@
 			reg = <0x101>;
 			cci-control-port = <&cci_control2>;
 			cpu-idle-states = <&CLUSTER_SLEEP_LITTLE>;
+			clock-frequency = <800000000>;
 		};
 
 		cpu4: cpu@4 {
@@ -71,6 +75,7 @@
 			reg = <0x102>;
 			cci-control-port = <&cci_control2>;
 			cpu-idle-states = <&CLUSTER_SLEEP_LITTLE>;
+			clock-frequency = <800000000>;
 		};
 
 		idle-states {
-- 
1.9.1

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