From: Aaron Kling <webgeek1234@gmail.com>
Date: Wed, 22 Oct 2025 03:13:24 +0000 (-0500)
Subject: arm64: tegra: Add OPP tables on Tegra210
X-Git-Tag: v6.19-rc1~100^2~23^2~13
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=654427e0b9b755d968bfd4147fc249ba1bd56ea9;p=thirdparty%2Fkernel%2Flinux.git

arm64: tegra: Add OPP tables on Tegra210

This adds OPP tables for ACTMON and EMC, enabling dynamic frequency
scaling for system memory.

Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/arch/arm64/boot/dts/nvidia/tegra210-peripherals-opp.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-peripherals-opp.dtsi
new file mode 100644
index 0000000000000..bf2527d737932
--- /dev/null
+++ b/arch/arm64/boot/dts/nvidia/tegra210-peripherals-opp.dtsi
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/ {
+	/* EMC DVFS OPP table */
+	emc_icc_dvfs_opp_table: opp-table-dvfs0 {
+		compatible = "operating-points-v2";
+
+		opp-40800000-800 {
+			opp-microvolt = <800000 800000 1150000>;
+			opp-hz = /bits/ 64 <40800000>;
+			opp-supported-hw = <0x0003>;
+		};
+
+		opp-68000000-800 {
+			opp-microvolt = <800000 800000 1150000>;
+			opp-hz = /bits/ 64 <68000000>;
+			opp-supported-hw = <0x0003>;
+		};
+
+		opp-102000000-800 {
+			opp-microvolt = <800000 800000 1150000>;
+			opp-hz = /bits/ 64 <102000000>;
+			opp-supported-hw = <0x0003>;
+		};
+
+		opp-204000000-800 {
+			opp-microvolt = <800000 800000 1150000>;
+			opp-hz = /bits/ 64 <204000000>;
+			opp-supported-hw = <0x0007>;
+			opp-suspend;
+		};
+
+		opp-408000000-812 {
+			opp-microvolt = <812000 812000 1150000>;
+			opp-hz = /bits/ 64 <408000000>;
+			opp-supported-hw = <0x0003>;
+		};
+
+		opp-665600000-825 {
+			opp-microvolt = <825000 825000 1150000>;
+			opp-hz = /bits/ 64 <665600000>;
+			opp-supported-hw = <0x0003>;
+		};
+
+		opp-800000000-825 {
+			opp-microvolt = <825000 825000 1150000>;
+			opp-hz = /bits/ 64 <800000000>;
+			opp-supported-hw = <0x0003>;
+		};
+
+		opp-1065600000-837 {
+			opp-microvolt = <837000 837000 1150000>;
+			opp-hz = /bits/ 64 <1065600000>;
+			opp-supported-hw = <0x0003>;
+		};
+
+		opp-1331200000-850 {
+			opp-microvolt = <850000 850000 1150000>;
+			opp-hz = /bits/ 64 <1331200000>;
+			opp-supported-hw = <0x0003>;
+		};
+
+		opp-1600000000-887 {
+			opp-microvolt = <887000 887000 1150000>;
+			opp-hz = /bits/ 64 <1600000000>;
+			opp-supported-hw = <0x0007>;
+		};
+	};
+
+	/* EMC bandwidth OPP table */
+	emc_bw_dfs_opp_table: opp-table-dvfs1 {
+		compatible = "operating-points-v2";
+
+		opp-40800000 {
+			opp-hz = /bits/ 64 <40800000>;
+			opp-supported-hw = <0x0003>;
+			opp-peak-kBps = <652800>;
+		};
+
+		opp-68000000 {
+			opp-hz = /bits/ 64 <68000000>;
+			opp-supported-hw = <0x0003>;
+			opp-peak-kBps = <1088000>;
+		};
+
+		opp-102000000 {
+			opp-hz = /bits/ 64 <102000000>;
+			opp-supported-hw = <0x0003>;
+			opp-peak-kBps = <1632000>;
+		};
+
+		opp-204000000 {
+			opp-hz = /bits/ 64 <204000000>;
+			opp-supported-hw = <0x0007>;
+			opp-peak-kBps = <3264000>;
+			opp-suspend;
+		};
+
+		opp-408000000 {
+			opp-hz = /bits/ 64 <408000000>;
+			opp-supported-hw = <0x0003>;
+			opp-peak-kBps = <6528000>;
+		};
+
+		opp-665600000 {
+			opp-hz = /bits/ 64 <665600000>;
+			opp-supported-hw = <0x0003>;
+			opp-peak-kBps = <10649600>;
+		};
+
+		opp-800000000 {
+			opp-hz = /bits/ 64 <800000000>;
+			opp-supported-hw = <0x001F>;
+			opp-peak-kBps = <12800000>;
+		};
+
+		opp-1065600000 {
+			opp-hz = /bits/ 64 <1065600000>;
+			opp-supported-hw = <0x0003>;
+			opp-peak-kBps = <17049600>;
+		};
+
+		opp-1331200000 {
+			opp-hz = /bits/ 64 <1331200000>;
+			opp-supported-hw = <0x0003>;
+			opp-peak-kBps = <21299200>;
+		};
+
+		opp-1600000000 {
+			opp-hz = /bits/ 64 <1600000000>;
+			opp-supported-hw = <0x0007>;
+			opp-peak-kBps = <25600000>;
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index c196ceed93503..44af2760a1724 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -9,6 +9,8 @@
 #include <dt-bindings/thermal/tegra124-soctherm.h>
 #include <dt-bindings/soc/tegra-pmc.h>
 
+#include "tegra210-peripherals-opp.dtsi"
+
 / {
 	compatible = "nvidia,tegra210";
 	interrupt-parent = <&lic>;
@@ -514,6 +516,9 @@
 		clock-names = "actmon", "emc";
 		resets = <&tegra_car 119>;
 		reset-names = "actmon";
+		operating-points-v2 = <&emc_bw_dfs_opp_table>;
+		interconnects = <&mc TEGRA210_MC_MPCORER &emc>;
+		interconnect-names = "cpu-read";
 		#cooling-cells = <2>;
 	};
 
@@ -1022,6 +1027,8 @@
 		clock-names = "emc";
 		interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
 		nvidia,memory-controller = <&mc>;
+		operating-points-v2 = <&emc_icc_dvfs_opp_table>;
+
 		#interconnect-cells = <0>;
 		#cooling-cells = <2>;
 	};