linux-kernel - [PATCH v2 6/6] ARM: dts: mt6580: enable basic SMP bringup for MT6580

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Date:	Fri, 10 Jul 2015 14:04:09 +0800
From:	Scott Shu <scott.shu@...iatek.com>
To:	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>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Catalin Marinas <catalin.marinas@....com>,
	Heiko Stuebner <heiko@...ech.de>,
	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	Marc Carino <marc.ceeeee@...il.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	Radha Mohan Chintakuntla <rchintakuntla@...ium.com>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-mediatek@...ts.infradead.org>
CC:	<loda.chou@...iatek.com>, <jades.shih@...iatek.com>,
	<scott.shu@...il.com>, <wsd_upstream@...iatek.com>,
	Scott Shu <scott.shu@...iatek.com>
Subject: [PATCH v2 6/6] ARM: dts: mt6580: enable basic SMP bringup for MT6580

Add arch timer node to enable arch-timer support. MT6580 firmware
doesn't correctly setup arch-timer frequency and CNTVOFF, add
properties to workaround this.

This set cpu enable-method to enable SMP.

Signed-off-by: Scott Shu <scott.shu@...iatek.com>
---
 arch/arm/boot/dts/mt6580.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/mt6580.dtsi b/arch/arm/boot/dts/mt6580.dtsi
index 4a9df6a..ef577bd 100644
--- a/arch/arm/boot/dts/mt6580.dtsi
+++ b/arch/arm/boot/dts/mt6580.dtsi
@@ -25,26 +25,31 @@
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
+		enable-method = "mediatek,mt6580-smp";
 
 		cpu@0 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x0>;
+			clock-frequency = <1700000000>;
 		};
 		cpu@1 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x1>;
+			clock-frequency = <1700000000>;
 		};
 		cpu@2 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x2>;
+			clock-frequency = <1700000000>;
 		};
 		cpu@3 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x3>;
+			clock-frequency = <1700000000>;
 		};
 
 	};
@@ -74,6 +79,21 @@
 		};
 	};
 
+	timer {
+		compatible = "arm,armv7-timer";
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) |
+					  IRQ_TYPE_LEVEL_LOW)>,
+				<GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) |
+					  IRQ_TYPE_LEVEL_LOW)>,
+				<GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) |
+					  IRQ_TYPE_LEVEL_LOW)>,
+				<GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) |
+					  IRQ_TYPE_LEVEL_LOW)>;
+		clock-frequency = <13000000>;
+		arm,cpu-registers-not-fw-configured;
+	};
+
 	scpsys: scpsys@...06000 {
 		compatible = "mediatek,mt6580-scpsys";
 		reg = <0x10006000 0x1000>;
-- 
1.8.1.1.dirty

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