linux-kernel - [PATCH 2/2] ARM: dts: socfpga: Add support for PMU

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Message-Id: <1488297132-21553-3-git-send-email-florian.vaussard@heig-vd.ch>
Date:   Tue, 28 Feb 2017 16:52:12 +0100
From:   Florian Vaussard <florian.vaussard@...il.com>
To:     Dinh Nguyen <dinguyen@...nel.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Alberto Dassatti <alberto.dassatti@...g-vd.ch>,
        Florian Vaussard <florian.vaussard@...g-vd.ch>
Subject: [PATCH 2/2] ARM: dts: socfpga: Add support for PMU

The dual Cortex-A9 MPCore inside socfpga has a standard PMU unit for
each core mapped in the DAP memory space. Add support for it!

Tested with perf on a Cyclone 5 SoC DK.

Reported-by: Alberto Dassatti <alberto.dassatti@...g-vd.ch>
Signed-off-by: Florian Vaussard <florian.vaussard@...g-vd.ch>
Tested-by: Alberto Dassatti <alberto.dassatti@...g-vd.ch>
---
 arch/arm/boot/dts/socfpga.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/socfpga.dtsi b/arch/arm/boot/dts/socfpga.dtsi
index 478047e..a892de9 100644
--- a/arch/arm/boot/dts/socfpga.dtsi
+++ b/arch/arm/boot/dts/socfpga.dtsi
@@ -52,6 +52,15 @@
 		};
 	};
 
+	pmu: pmu@...11000 {
+		compatible = "arm,cortex-a9-pmu";
+		interrupt-parent = <&intc>;
+		interrupts = <0 176 4>, <0 177 4>;
+		interrupt-affinity = <&cpu0>, <&cpu1>;
+		reg = <0xff111000 0x1000>,
+		      <0xff113000 0x1000>;
+	};
+
 	intc: intc@...ed000 {
 		compatible = "arm,cortex-a9-gic";
 		#interrupt-cells = <3>;
-- 
2.7.4