linux-kernel - [PATCH 1/2] ARM: dts: imx6q: add pmu interrupt-affinity

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Date:   Fri, 18 Jan 2019 14:59:06 +0100
From:   Stefan Agner <stefan@...er.ch>
To:     shawnguo@...nel.org, s.hauer@...gutronix.de
Cc:     max.krummenacher@...adex.com, marcel.ziswiler@...adex.com,
        dev@...henker.ch, kernel@...gutronix.de, fabio.estevam@....com,
        linux-imx@....com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Stefan Agner <stefan@...er.ch>
Subject: [PATCH 1/2] ARM: dts: imx6q: add pmu interrupt-affinity

Explicitly specify interrupt affinity to avoid HW perfevents
need to guess. This avoids the following error upon boot:
  hw perfevents: no interrupt-affinity property for /pmu, guessing.

Specifying all four CPUs shows no aversive effects on i.MX 6Dual
SoCs.

Signed-off-by: Stefan Agner <stefan@...er.ch>
---
 arch/arm/boot/dts/imx6q.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi
index 8381d24eff7d..d2c1977c8b16 100644
--- a/arch/arm/boot/dts/imx6q.dtsi
+++ b/arch/arm/boot/dts/imx6q.dtsi
@@ -537,6 +537,13 @@
 			<0x28 0x0000000c>; /* DCIC2_MUX_CTL */
 };
 
+&pmu {
+	interrupt-affinity = <&{/cpus/cpu@0}>,
+			     <&{/cpus/cpu@1}>,
+			     <&{/cpus/cpu@2}>,
+			     <&{/cpus/cpu@3}>;
+};
+
 &vpu {
 	compatible = "fsl,imx6q-vpu", "cnm,coda960";
 };
-- 
2.20.1