linux-kernel - [PATCH v5 7/8] arm64: dts: rockchip: Add OPP data for CPU cores on RK3588j

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Message-Id: <20240617-rk-dts-additions-v5-7-c1f5f3267f1e@gmail.com>
Date: Mon, 17 Jun 2024 22:28:57 +0400
From: Alexey Charkov <alchark@...il.com>
To: Rob Herring <robh+dt@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>, 
 Dragan Simic <dsimic@...jaro.org>, Viresh Kumar <viresh.kumar@...aro.org>, 
 Chen-Yu Tsai <wens@...nel.org>, Diederik de Haas <didi.debian@...ow.org>, 
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Alexey Charkov <alchark@...il.com>
Subject: [PATCH v5 7/8] arm64: dts: rockchip: Add OPP data for CPU cores on
 RK3588j

RK3588j is the 'industrial' variant of RK3588, and it uses a different
set of OPPs both in terms of allowed frequencies and in terms of
applicable voltages at each frequency setpoint.

Add the OPPs that apply to RK3588j (and apparently RK3588m too) to
enable dynamic CPU frequency scaling.

OPP values are derived from Rockchip downstream sources [1] by taking
only those OPPs which have the highest frequency for a given voltage
level and dropping the rest (if they are included, the kernel complains
at boot time about them being inefficient)

[1] https://github.com/rockchip-linux/kernel/blob/604cec4004abe5a96c734f2fab7b74809d2d742f/arch/arm64/boot/dts/rockchip/rk3588s.dtsi

Signed-off-by: Alexey Charkov <alchark@...il.com>
---
 arch/arm64/boot/dts/rockchip/rk3588j.dtsi | 108 ++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588j.dtsi b/arch/arm64/boot/dts/rockchip/rk3588j.dtsi
index 0bbeee399a63..b7e69553857b 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588j.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588j.dtsi
@@ -5,3 +5,111 @@
  */
 
 #include "rk3588-extra.dtsi"
+
+/ {
+	cluster0_opp_table: opp-table-cluster0 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-1416000000 {
+			opp-hz = /bits/ 64 <1416000000>;
+			opp-microvolt = <750000 750000 950000>;
+			clock-latency-ns = <40000>;
+			opp-suspend;
+		};
+		opp-1608000000 {
+			opp-hz = /bits/ 64 <1608000000>;
+			opp-microvolt = <887500 887500 950000>;
+			clock-latency-ns = <40000>;
+		};
+		opp-1704000000 {
+			opp-hz = /bits/ 64 <1704000000>;
+			opp-microvolt = <937500 937500 950000>;
+			clock-latency-ns = <40000>;
+		};
+	};
+
+	cluster1_opp_table: opp-table-cluster1 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-1416000000 {
+			opp-hz = /bits/ 64 <1416000000>;
+			opp-microvolt = <750000 750000 950000>;
+			clock-latency-ns = <40000>;
+		};
+		opp-1608000000 {
+			opp-hz = /bits/ 64 <1608000000>;
+			opp-microvolt = <787500 787500 950000>;
+			clock-latency-ns = <40000>;
+		};
+		opp-1800000000 {
+			opp-hz = /bits/ 64 <1800000000>;
+			opp-microvolt = <875000 875000 950000>;
+			clock-latency-ns = <40000>;
+		};
+		opp-2016000000 {
+			opp-hz = /bits/ 64 <2016000000>;
+			opp-microvolt = <950000 950000 950000>;
+			clock-latency-ns = <40000>;
+		};
+	};
+
+	cluster2_opp_table: opp-table-cluster2 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-1416000000 {
+			opp-hz = /bits/ 64 <1416000000>;
+			opp-microvolt = <750000 750000 950000>;
+			clock-latency-ns = <40000>;
+		};
+		opp-1608000000 {
+			opp-hz = /bits/ 64 <1608000000>;
+			opp-microvolt = <787500 787500 950000>;
+			clock-latency-ns = <40000>;
+		};
+		opp-1800000000 {
+			opp-hz = /bits/ 64 <1800000000>;
+			opp-microvolt = <875000 875000 950000>;
+			clock-latency-ns = <40000>;
+		};
+		opp-2016000000 {
+			opp-hz = /bits/ 64 <2016000000>;
+			opp-microvolt = <950000 950000 950000>;
+			clock-latency-ns = <40000>;
+		};
+	};
+};
+
+&cpu_b0 {
+	operating-points-v2 = <&cluster1_opp_table>;
+};
+
+&cpu_b1 {
+	operating-points-v2 = <&cluster1_opp_table>;
+};
+
+&cpu_b2 {
+	operating-points-v2 = <&cluster2_opp_table>;
+};
+
+&cpu_b3 {
+	operating-points-v2 = <&cluster2_opp_table>;
+};
+
+&cpu_l0 {
+	operating-points-v2 = <&cluster0_opp_table>;
+};
+
+&cpu_l1 {
+	operating-points-v2 = <&cluster0_opp_table>;
+};
+
+&cpu_l2 {
+	operating-points-v2 = <&cluster0_opp_table>;
+};
+
+&cpu_l3 {
+	operating-points-v2 = <&cluster0_opp_table>;
+};

-- 
2.45.2