| NVIDIA Tegra Activity Monitor |
| |
| The activity monitor block collects statistics about the behaviour of other |
| components in the system. This information can be used to derive the rate at |
| which the external memory needs to be clocked in order to serve all requests |
| from the monitored clients. |
| |
| Required properties: |
| - compatible: should be "nvidia,tegra<chip>-actmon" |
| - reg: offset and length of the register set for the device |
| - interrupts: standard interrupt property |
| - clocks: Must contain a phandle and clock specifier pair for each entry in |
| clock-names. See ../../clock/clock-bindings.txt for details. |
| - clock-names: Must include the following entries: |
| - actmon |
| - emc |
| - resets: Must contain an entry for each entry in reset-names. See |
| ../../reset/reset.txt for details. |
| - reset-names: Must include the following entries: |
| - actmon |
| - operating-points-v2: See ../bindings/opp/opp.txt for details. |
| - interconnects: Should contain entries for memory clients sitting on |
| MC->EMC memory interconnect path. |
| - interconnect-names: Should include name of the interconnect path for each |
| interconnect entry. Consult TRM documentation for |
| information about available memory clients, see MEMORY |
| CONTROLLER section. |
| |
| For each opp entry in 'operating-points-v2' table: |
| - opp-supported-hw: bitfield indicating SoC speedo ID mask |
| - opp-peak-kBps: peak bandwidth of the memory channel |
| |
| Example: |
| dfs_opp_table: opp-table { |
| compatible = "operating-points-v2"; |
| |
| opp@12750000 { |
| opp-hz = /bits/ 64 <12750000>; |
| opp-supported-hw = <0x000F>; |
| opp-peak-kBps = <51000>; |
| }; |
| ... |
| }; |
| |
| actmon@6000c800 { |
| compatible = "nvidia,tegra124-actmon"; |
| reg = <0x0 0x6000c800 0x0 0x400>; |
| interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>; |
| clocks = <&tegra_car TEGRA124_CLK_ACTMON>, |
| <&tegra_car TEGRA124_CLK_EMC>; |
| clock-names = "actmon", "emc"; |
| resets = <&tegra_car 119>; |
| reset-names = "actmon"; |
| operating-points-v2 = <&dfs_opp_table>; |
| interconnects = <&mc TEGRA124_MC_MPCORER &emc>; |
| interconnect-names = "cpu"; |
| }; |