linux-kernel - [PATCH 3/4] ARM: dts: sun9i: Add enable-method for SMP support for the A80 SoC

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Date:   Thu,  8 Mar 2018 23:00:11 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     Chen-Yu Tsai <wens@...e.org>,
        Mylene Josserand <mylene.josserand@...tlin.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCH 3/4] ARM: dts: sun9i: Add enable-method for SMP support for the A80 SoC

Using the enable-method property for SMP support would allow future PSCI
implementations to override any in-OS support. This is better than just
matching against the machine compatible, and then having to determine
whether other methods are available or not.

This adds enable-method properties to all CPU nodes.

Signed-off-by: Chen-Yu Tsai <wens@...e.org>
---
 arch/arm/boot/dts/sun9i-a80.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/sun9i-a80.dtsi b/arch/arm/boot/dts/sun9i-a80.dtsi
index b1c86b76ac3c..82a770a5ba46 100644
--- a/arch/arm/boot/dts/sun9i-a80.dtsi
+++ b/arch/arm/boot/dts/sun9i-a80.dtsi
@@ -65,6 +65,7 @@
 			device_type = "cpu";
 			cci-control-port = <&cci_control0>;
 			clock-frequency = <12000000>;
+			enable-method = "allwinner,sun9i-a80-smp";
 			reg = <0x0>;
 		};
 
@@ -73,6 +74,7 @@
 			device_type = "cpu";
 			cci-control-port = <&cci_control0>;
 			clock-frequency = <12000000>;
+			enable-method = "allwinner,sun9i-a80-smp";
 			reg = <0x1>;
 		};
 
@@ -81,6 +83,7 @@
 			device_type = "cpu";
 			cci-control-port = <&cci_control0>;
 			clock-frequency = <12000000>;
+			enable-method = "allwinner,sun9i-a80-smp";
 			reg = <0x2>;
 		};
 
@@ -89,6 +92,7 @@
 			device_type = "cpu";
 			cci-control-port = <&cci_control0>;
 			clock-frequency = <12000000>;
+			enable-method = "allwinner,sun9i-a80-smp";
 			reg = <0x3>;
 		};
 
@@ -97,6 +101,7 @@
 			device_type = "cpu";
 			cci-control-port = <&cci_control1>;
 			clock-frequency = <18000000>;
+			enable-method = "allwinner,sun9i-a80-smp";
 			reg = <0x100>;
 		};
 
@@ -105,6 +110,7 @@
 			device_type = "cpu";
 			cci-control-port = <&cci_control1>;
 			clock-frequency = <18000000>;
+			enable-method = "allwinner,sun9i-a80-smp";
 			reg = <0x101>;
 		};
 
@@ -113,6 +119,7 @@
 			device_type = "cpu";
 			cci-control-port = <&cci_control1>;
 			clock-frequency = <18000000>;
+			enable-method = "allwinner,sun9i-a80-smp";
 			reg = <0x102>;
 		};
 
@@ -121,6 +128,7 @@
 			device_type = "cpu";
 			cci-control-port = <&cci_control1>;
 			clock-frequency = <18000000>;
+			enable-method = "allwinner,sun9i-a80-smp";
 			reg = <0x103>;
 		};
 	};
-- 
2.16.2