nvidia,tegra30-actmon.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/devfreq/nvidia,tegra30-actmon.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: NVIDIA Tegra30 Activity Monitor
    8 
    9 maintainers:
   10   - Dmitry Osipenko <digetx@gmail.com>
   11   - Jon Hunter <jonathanh@nvidia.com>
   12   - Thierry Reding <thierry.reding@gmail.com>
   13 
   14 description: |
   15   The activity monitor block collects statistics about the behaviour of other
   16   components in the system. This information can be used to derive the rate at
   17   which the external memory needs to be clocked in order to serve all requests
   18   from the monitored clients.
   19 
   20 properties:
   21   compatible:
   22     enum:
   23       - nvidia,tegra30-actmon
   24       - nvidia,tegra114-actmon
   25       - nvidia,tegra124-actmon
   26       - nvidia,tegra210-actmon
   27 
   28   reg:
   29     maxItems: 1
   30 
   31   clocks:
   32     maxItems: 2
   33 
   34   clock-names:
   35     items:
   36       - const: actmon
   37       - const: emc
   38 
   39   resets:
   40     maxItems: 1
   41 
   42   reset-names:
   43     items:
   44       - const: actmon
   45 
   46   interrupts:
   47     maxItems: 1
   48 
   49   interconnects:
   50     minItems: 1
   51     maxItems: 12
   52 
   53   interconnect-names:
   54     minItems: 1
   55     maxItems: 12
   56     description:
   57       Should include name of the interconnect path for each interconnect
   58       entry. Consult TRM documentation for information about available
   59       memory clients, see MEMORY CONTROLLER and ACTIVITY MONITOR sections.
   60 
   61   operating-points-v2:
   62     description:
   63       Should contain freqs and voltages and opp-supported-hw property, which
   64       is a bitfield indicating SoC speedo ID mask.
   65 
   66   "#cooling-cells":
   67     const: 2
   68 
   69 required:
   70   - compatible
   71   - reg
   72   - clocks
   73   - clock-names
   74   - resets
   75   - reset-names
   76   - interrupts
   77   - interconnects
   78   - interconnect-names
   79   - operating-points-v2
   80   - "#cooling-cells"
   81 
   82 additionalProperties: false
   83 
   84 examples:
   85   - |
   86     #include <dt-bindings/memory/tegra30-mc.h>
   87 
   88     mc: memory-controller@7000f000 {
   89         compatible = "nvidia,tegra30-mc";
   90         reg = <0x7000f000 0x400>;
   91         clocks = <&clk 32>;
   92         clock-names = "mc";
   93 
   94         interrupts = <0 77 4>;
   95 
   96         #iommu-cells = <1>;
   97         #reset-cells = <1>;
   98         #interconnect-cells = <1>;
   99     };
  100 
  101     emc: external-memory-controller@7000f400 {
  102         compatible = "nvidia,tegra30-emc";
  103         reg = <0x7000f400 0x400>;
  104         interrupts = <0 78 4>;
  105         clocks = <&clk 57>;
  106 
  107         nvidia,memory-controller = <&mc>;
  108         operating-points-v2 = <&dvfs_opp_table>;
  109         power-domains = <&domain>;
  110 
  111         #interconnect-cells = <0>;
  112     };
  113 
  114     actmon@6000c800 {
  115         compatible = "nvidia,tegra30-actmon";
  116         reg = <0x6000c800 0x400>;
  117         interrupts = <0 45 4>;
  118         clocks = <&clk 119>, <&clk 57>;
  119         clock-names = "actmon", "emc";
  120         resets = <&rst 119>;
  121         reset-names = "actmon";
  122         operating-points-v2 = <&dvfs_opp_table>;
  123         interconnects = <&mc TEGRA30_MC_MPCORER &emc>;
  124         interconnect-names = "cpu-read";
  125         #cooling-cells = <2>;
  126     };

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sys/contrib/device-tree/Bindings/devfreq/nvidia,tegra30-actmon.yaml