linux-kernel - [PATCHv2] ARM: dts: imx6q-bx50v3: Enable secure-reg-access

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Message-Id: <20180205170840.14045-1-sebastian.reichel@collabora.co.uk>
Date:   Mon,  5 Feb 2018 18:08:40 +0100
From:   Sebastian Reichel <sebastian.reichel@...labora.co.uk>
To:     Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>
Cc:     Ian Ray <ian.ray@...com>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...labora.com,
        Sebastian Reichel <sebastian.reichel@...labora.co.uk>
Subject: [PATCHv2] ARM: dts: imx6q-bx50v3: Enable secure-reg-access

From: Peter Senna Tschudin <peter.senna@...labora.com>

Enable secure debug enable register access for Bx50v3 devices to enable
PMU and hardware counters for perf.

Signed-off-by: Peter Senna Tschudin <peter.senna@...labora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.co.uk>
---
Changes since PATCHv1:
 * add property by adding a label to the pmu node in imx6qdl and
   referencing it in bx50v3.dtsi.
---
 arch/arm/boot/dts/imx6q-bx50v3.dtsi | 4 ++++
 arch/arm/boot/dts/imx6qdl.dtsi      | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx6q-bx50v3.dtsi b/arch/arm/boot/dts/imx6q-bx50v3.dtsi
index 916ea94d75ca..2baffc8b9094 100644
--- a/arch/arm/boot/dts/imx6q-bx50v3.dtsi
+++ b/arch/arm/boot/dts/imx6q-bx50v3.dtsi
@@ -388,3 +388,7 @@
 		#interrupt-cells = <1>;
 	};
 };
+
+&pmu {
+	secure-reg-access;
+};
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 59ff86695a14..2b921de44c02 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -143,7 +143,7 @@
 		};
 	};
 
-	pmu {
+	pmu: pmu {
 		compatible = "arm,cortex-a9-pmu";
 		interrupt-parent = <&gpc>;
 		interrupts = <0 94 IRQ_TYPE_LEVEL_HIGH>;
-- 
2.15.1