linux-kernel - [PATCH] arm64: dts: meson-g12b-odroid-n2*: Add support for overclocking Hardkernel ODROID-N2 boards.

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Date: Thu, 22 Feb 2024 08:25:23 +0000
From: Adam Green <greena88@...il.com>
To: Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Kevin Hilman <khilman@...libre.com>,
	Jerome Brunet <jbrunet@...libre.com>,
	Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-amlogic@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: greena88@...il.com
Subject: [PATCH] arm64: dts: meson-g12b-odroid-n2*: Add support for overclocking Hardkernel ODROID-N2 boards.

Hardkernel actively supports overclocking these boards in their own
documentation. (https://wiki.odroid.com/odroid-n2/hardware/overclocking)

This aligns the SoC opps with those in the board vendors bsp source.

Signed-off-by: Adam Green <greena88@...il.com>
---
 .../dts/amlogic/meson-g12b-odroid-n2-plus.dts | 25 +++++++++++++++++++
 .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 17 +++++++++++++
 .../dts/amlogic/meson-g12b-odroid-n2l.dts     | 25 +++++++++++++++++++
 3 files changed, 67 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts
index ce1198ad34e4..1731d542a00c 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts
@@ -15,6 +15,31 @@ / {
 	model = "Hardkernel ODROID-N2Plus";
 };
 
+&cpu_opp_table_0 {
+	opp-1908000000 {
+		opp-hz = /bits/ 64 <1908000000>;
+		opp-microvolt = <1030000>;
+	};
+	opp-2016000000 {
+		opp-hz = /bits/ 64 <2016000000>;
+		opp-microvolt = <1040000>;
+		turbo-mode;
+	};
+};
+
+&cpub_opp_table_1 {
+	opp-2304000000 {
+		opp-hz = /bits/ 64 <2304000000>;
+		opp-microvolt = <1030000>;
+		turbo-mode;
+	};
+	opp-2400000000 {
+		opp-hz = /bits/ 64 <2400000000>;
+		opp-microvolt = <1040000>;
+		turbo-mode;
+	};
+};
+
 &vddcpu_a {
 	regulator-min-microvolt = <680000>;
 	regulator-max-microvolt = <1040000>;
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts
index a198a91259ec..0c71e8bc0124 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts
@@ -13,3 +13,20 @@ / {
 	compatible = "hardkernel,odroid-n2", "amlogic,s922x", "amlogic,g12b";
 	model = "Hardkernel ODROID-N2";
 };
+
+&cpu_opp_table_0 {
+	opp-1992000000 {
+		turbo-mode;
+	};
+};
+
+&cpub_opp_table_1 {
+	opp-1908000000 {
+		turbo-mode;
+	};
+	opp-2004000000 {
+		opp-hz = /bits/ 64 <2004000000>;
+		opp-microvolt = <1022000>;
+		turbo-mode;
+	};
+};
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2l.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2l.dts
index e26f3e3258e1..b16a69d0cad6 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2l.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2l.dts
@@ -97,6 +97,31 @@ codec {
 	};
 };
 
+&cpu_opp_table_0 {
+	opp-1908000000 {
+		opp-hz = /bits/ 64 <1908000000>;
+		opp-microvolt = <1030000>;
+	};
+	opp-2016000000 {
+		opp-hz = /bits/ 64 <2016000000>;
+		opp-microvolt = <1040000>;
+		turbo-mode;
+	};
+};
+
+&cpub_opp_table_1 {
+	opp-2304000000 {
+		opp-hz = /bits/ 64 <2304000000>;
+		opp-microvolt = <1030000>;
+		turbo-mode;
+	};
+	opp-2400000000 {
+		opp-hz = /bits/ 64 <2400000000>;
+		opp-microvolt = <1040000>;
+		turbo-mode;
+	};
+};
+
 &eth_phy {
 	status = "disabled";
 };
-- 
2.34.1