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ARM: tegra: Add EMC OPP and ICC properties to Tegra114 EMC and ACTMON device-tree nodes

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Add EMC OPP tables and interconnect paths that will be used for dynamic
memory bandwidth scaling based on memory utilization statistics.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Svyatoslav Ryhel 2026-04-27 10:03:10 +03:00 committed by Thierry Reding
parent 1fe27b10dc
commit bdc80b3246
2 changed files with 173 additions and 0 deletions
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164
arch/arm/boot/dts/nvidia/tegra114-peripherals-opp.dtsi Normal file
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@ -0,0 +1,164 @@
// SPDX-License-Identifier: GPL-2.0
/ {
emc_icc_dvfs_opp_table: opp-table-emc {
compatible = "operating-points-v2";
opp-12750000-900 {
opp-microvolt = <900000 900000 1390000>;
opp-hz = /bits/ 64 <12750000>;
opp-supported-hw = <0x000F>;
};
opp-20400000-900 {
opp-microvolt = <900000 900000 1390000>;
opp-hz = /bits/ 64 <20400000>;
opp-supported-hw = <0x000F>;
};
opp-40800000-900 {
opp-microvolt = <900000 900000 1390000>;
opp-hz = /bits/ 64 <40800000>;
opp-supported-hw = <0x000F>;
};
opp-68000000-900 {
opp-microvolt = <900000 900000 1390000>;
opp-hz = /bits/ 64 <68000000>;
opp-supported-hw = <0x000F>;
};
opp-102000000-900 {
opp-microvolt = <900000 900000 1390000>;
opp-hz = /bits/ 64 <102000000>;
opp-supported-hw = <0x000F>;
};
opp-204000000-900 {
opp-microvolt = <900000 900000 1390000>;
opp-hz = /bits/ 64 <204000000>;
opp-supported-hw = <0x000F>;
opp-suspend;
};
opp-312000000-1000 {
opp-microvolt = <1000000 1000000 1390000>;
opp-hz = /bits/ 64 <312000000>;
opp-supported-hw = <0x000F>;
};
opp-408000000-1000 {
opp-microvolt = <1000000 1000000 1390000>;
opp-hz = /bits/ 64 <408000000>;
opp-supported-hw = <0x000F>;
};
/*
* T40X can work with 1050mV for 528MHz but T40T which is
* in the same group as T40X requires 1100mV. If there will
* be enough data that T40T can work reliably with 1050mV
* for 528MHz then voltage for 528MHz opp can be lowered.
* T40S should remain with 1100mV for 528MHz opp.
*/
opp-528000000-1100 {
opp-microvolt = <1100000 1100000 1390000>;
opp-hz = /bits/ 64 <528000000>;
opp-supported-hw = <0x000F>;
};
opp-624000000-1100 {
opp-microvolt = <1100000 1100000 1390000>;
opp-hz = /bits/ 64 <624000000>;
opp-supported-hw = <0x000F>;
};
opp-792000000-1100 {
opp-microvolt = <1100000 1100000 1390000>;
opp-hz = /bits/ 64 <792000000>;
opp-supported-hw = <0x000F>;
};
opp-900000000-1200 {
opp-microvolt = <1200000 1200000 1390000>;
opp-hz = /bits/ 64 <900000000>;
opp-supported-hw = <0x000E>;
};
};
emc_bw_dfs_opp_table: opp-table-actmon {
compatible = "operating-points-v2";
opp-12750000 {
opp-hz = /bits/ 64 <12750000>;
opp-supported-hw = <0x000F>;
opp-peak-kBps = <204000>;
};
opp-20400000 {
opp-hz = /bits/ 64 <20400000>;
opp-supported-hw = <0x000F>;
opp-peak-kBps = <326400>;
};
opp-40800000 {
opp-hz = /bits/ 64 <40800000>;
opp-supported-hw = <0x000F>;
opp-peak-kBps = <652800>;
};
opp-68000000 {
opp-hz = /bits/ 64 <68000000>;
opp-supported-hw = <0x000F>;
opp-peak-kBps = <1088000>;
};
opp-102000000 {
opp-hz = /bits/ 64 <102000000>;
opp-supported-hw = <0x000F>;
opp-peak-kBps = <1632000>;
};
opp-204000000 {
opp-hz = /bits/ 64 <204000000>;
opp-supported-hw = <0x000F>;
opp-peak-kBps = <3264000>;
opp-suspend;
};
opp-312000000 {
opp-hz = /bits/ 64 <312000000>;
opp-supported-hw = <0x000F>;
opp-peak-kBps = <4992000>;
};
opp-408000000 {
opp-hz = /bits/ 64 <408000000>;
opp-supported-hw = <0x000F>;
opp-peak-kBps = <6528000>;
};
opp-528000000 {
opp-hz = /bits/ 64 <528000000>;
opp-supported-hw = <0x000F>;
opp-peak-kBps = <8448000>;
};
opp-624000000 {
opp-hz = /bits/ 64 <624000000>;
opp-supported-hw = <0x000F>;
opp-peak-kBps = <9984000>;
};
opp-792000000 {
opp-hz = /bits/ 64 <792000000>;
opp-supported-hw = <0x000F>;
opp-peak-kBps = <12672000>;
};
opp-900000000 {
opp-hz = /bits/ 64 <900000000>;
opp-supported-hw = <0x000E>;
opp-peak-kBps = <14400000>;
};
};
};

9
arch/arm/boot/dts/nvidia/tegra114.dtsi
View File

@ -8,6 +8,8 @@
#include <dt-bindings/soc/tegra-pmc.h>
#include <dt-bindings/thermal/tegra114-soctherm.h>
#include "tegra114-peripherals-opp.dtsi"
/ {
compatible = "nvidia,tegra114";
interrupt-parent = <&lic>;
@ -323,6 +325,9 @@ actmon: actmon@6000c800 {
clock-names = "actmon", "emc";
resets = <&tegra_car TEGRA114_CLK_ACTMON>;
reset-names = "actmon";
operating-points-v2 = <&emc_bw_dfs_opp_table>;
interconnects = <&mc TEGRA114_MC_MPCORER &emc>;
interconnect-names = "cpu-read";
#cooling-cells = <2>;
};
@ -655,6 +660,7 @@ mc: memory-controller@70019000 {
#reset-cells = <1>;
#iommu-cells = <1>;
#interconnect-cells = <1>;
};
emc: external-memory-controller@7001b000 {
@ -665,6 +671,9 @@ emc: external-memory-controller@7001b000 {
clock-names = "emc";
nvidia,memory-controller = <&mc>;
operating-points-v2 = <&emc_icc_dvfs_opp_table>;
#interconnect-cells = <0>;
};
hda@70030000 {