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| author | Svyatoslav Ryhel <clamor95@gmail.com> | 2026-04-27 10:03:10 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2026-05-29 00:08:23 +0200 |
| commit | bdc80b3246f18f8f9f94af78c3c9f3c22c62fad3 (patch) | |
| tree | 5cba04a865733d1153d6b168189547f0073f561d /arch | |
| parent | 1fe27b10dc97c85821dfae1e4e6f9db4472287aa (diff) | |
| download | linux-next-history-bdc80b3246f18f8f9f94af78c3c9f3c22c62fad3.tar.gz | |
ARM: tegra: Add EMC OPP and ICC properties to Tegra114 EMC and ACTMON device-tree nodes
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/boot/dts/nvidia/tegra114-peripherals-opp.dtsi | 164 | ||||
| -rw-r--r-- | arch/arm/boot/dts/nvidia/tegra114.dtsi | 9 |
2 files changed, 173 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/nvidia/tegra114-peripherals-opp.dtsi b/arch/arm/boot/dts/nvidia/tegra114-peripherals-opp.dtsi new file mode 100644 index 0000000000000..b40a1c24abab7 --- /dev/null +++ b/arch/arm/boot/dts/nvidia/tegra114-peripherals-opp.dtsi @@ -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>; + }; + }; +}; diff --git a/arch/arm/boot/dts/nvidia/tegra114.dtsi b/arch/arm/boot/dts/nvidia/tegra114.dtsi index 7e8f90d339359..6c2b79b359385 100644 --- a/arch/arm/boot/dts/nvidia/tegra114.dtsi +++ b/arch/arm/boot/dts/nvidia/tegra114.dtsi @@ -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 @@ 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 @@ #reset-cells = <1>; #iommu-cells = <1>; + #interconnect-cells = <1>; }; emc: external-memory-controller@7001b000 { @@ -665,6 +671,9 @@ clock-names = "emc"; nvidia,memory-controller = <&mc>; + operating-points-v2 = <&emc_icc_dvfs_opp_table>; + + #interconnect-cells = <0>; }; hda@70030000 { |