linux-kernel - [PATCH v4] arm64: dts: meson: S922X: extend cpu opp-points

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Message-ID: <20200426162119.GA23268@imac>
Date:   Sun, 26 Apr 2020 12:21:19 -0400
From:   Tim Lewis <elatllat@...il.com>
To:     elatllat@...il.com
Cc:     narmstrong@...libre.com, khilman@...libre.com,
        christianshewitt@...il.com, joy.cho@...dkernel.com,
        tobetter@...il.com, linux-amlogic@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, mark.rutland@....com,
        robh+dt@...nel.org
Subject: [PATCH v4] arm64: dts: meson: S922X: extend cpu opp-points

Add extra cpu pop points to allow mild overclock on S922X. The opp
points are found in Hardkernel N2 sources [1] and testing shows no
obvious issues on other S922X devices. Thermal throttling should
keep things in-check if needed.

[1] https://github.com/hardkernel/linux/commit/f86cd9487c7483b2a05f448b9ebacf6bd5a2ad2f
Tested-by: Christian Hewitt <christianshewitt@...il.com>
Reviewed-by: Neil Armstrong <narmstrong@...libre.com>
Signed-off-by: Tim Lewis <elatllat@...il.com>

---
 arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi | 15 +++++++++++++++
 1 files changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi
index 046cc332d..1e5d0ee5d 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi
@@ -65,6 +65,11 @@
 			opp-hz = /bits/ 64 <1896000000>;
 			opp-microvolt = <981000>;
 		};
+
+		opp-1992000000 {
+			opp-hz = /bits/ 64 <1992000000>;
+			opp-microvolt = <1001000>;
+		};
 	};
 
 	cpub_opp_table_1: opp-table-1 {
@@ -120,5 +125,15 @@
 			opp-hz = /bits/ 64 <1704000000>;
 			opp-microvolt = <891000>;
 		};
+
+		opp-1800000000 {
+			opp-hz = /bits/ 64 <1800000000>;
+			opp-microvolt = <981000>;
+		};
+
+		opp-1908000000 {
+			opp-hz = /bits/ 64 <1908000000>;
+			opp-microvolt = <1022000>;
+		};
 	};
 };
-- 
2.17.1