linux-kernel - [PATCH 1/5] arm: dts: mt7623: add a performance counter unit device node

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Message-ID: <84011aa94dd7be9239b7a2f944dd30fc70568fbb.1536141302.git.ryder.lee@mediatek.com>
Date:   Wed, 5 Sep 2018 18:22:17 +0800
From:   Ryder Lee <ryder.lee@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>
CC:     Sean Wang <sean.wang@...iatek.com>,
        Roy Luo <cheng-hao.luo@...iatek.com>,
        Weijie Gao <weijie.gao@...iatek.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        Ryder Lee <ryder.lee@...iatek.com>
Subject: [PATCH 1/5] arm: dts: mt7623: add a performance counter unit device node

Add ARM PMU device node to enable hardware perf events.

Signed-off-by: Ryder Lee <ryder.lee@...iatek.com>
---
 arch/arm/boot/dts/mt7623.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/mt7623.dtsi b/arch/arm/boot/dts/mt7623.dtsi
index 1cdc346..8c43bd0 100644
--- a/arch/arm/boot/dts/mt7623.dtsi
+++ b/arch/arm/boot/dts/mt7623.dtsi
@@ -121,6 +121,15 @@
 		};
 	};
 
+	pmu {
+		compatible = "arm,cortex-a7-pmu";
+		interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_SPI 5 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_SPI 6 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_SPI 7 IRQ_TYPE_LEVEL_LOW>;
+		interrupt-affinity = <&cpu0>, <&cpu1>, <&cpu2>, <&cpu3>;
+	};
+
 	system_clk: dummy13m {
 		compatible = "fixed-clock";
 		clock-frequency = <13000000>;
-- 
1.9.1