linux-kernel - [RFC PATCH 05/10] ARM: vexpress: Add CPU clock-frequencies to TC2 device-tree

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Date:	Tue,  2 Dec 2014 14:06:27 +0000
From:	Morten Rasmussen <morten.rasmussen@....com>
To:	peterz@...radead.org, mingo@...hat.com
Cc:	dietmar.eggemann@....com, vincent.guittot@...aro.org,
	pjt@...gle.com, bsegall@...gle.com, mturquette@...aro.org,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	Jon Medhurst <tixy@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>
Subject: [RFC PATCH 05/10] 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 'ARM: vexpress: Add CPU clock-frequencies to TC2
device-tree' (commit 8f15973ef8c3) taken from Linaro Stable Kernel (LSK)
massaged into mainline.

Cc: Jon Medhurst <tixy@...aro.org>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Pawel Moll <pawel.moll@....com>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Ian Campbell <ijc+devicetree@...lion.org.uk>
Cc: Kumar Gala <galak@...eaurora.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 322fd15..62f89e2 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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