cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
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samsung,exynosautov9-clock.yaml (5759B)

      1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
      2%YAML 1.2
      3---
      4$id: http://devicetree.org/schemas/clock/samsung,exynosautov9-clock.yaml#
      5$schema: http://devicetree.org/meta-schemas/core.yaml#
      6
      7title: Samsung Exynos Auto v9 SoC clock controller
      8
      9maintainers:
     10  - Chanho Park <chanho61.park@samsung.com>
     11  - Chanwoo Choi <cw00.choi@samsung.com>
     12  - Krzysztof Kozlowski <krzk@kernel.org>
     13  - Sylwester Nawrocki <s.nawrocki@samsung.com>
     14  - Tomasz Figa <tomasz.figa@gmail.com>
     15
     16description: |
     17  Exynos Auto v9 clock controller is comprised of several CMU units, generating
     18  clocks for different domains. Those CMU units are modeled as separate device
     19  tree nodes, and might depend on each other. Root clocks in that clock tree are
     20  two external clocks:: OSCCLK/XTCXO (26 MHz) and RTCCLK/XrtcXTI (32768 Hz).
     21  The external OSCCLK must be defined as fixed-rate clock in dts.
     22
     23  CMU_TOP is a top-level CMU, where all base clocks are prepared using PLLs and
     24  dividers; all other clocks of function blocks (other CMUs) are usually
     25  derived from CMU_TOP.
     26
     27  Each clock is assigned an identifier and client nodes can use this identifier
     28  to specify the clock which they consume. All clocks available for usage
     29  in clock consumer nodes are defined as preprocessor macros in
     30  'include/dt-bindings/clock/samsung,exynosautov9.h' header.
     31
     32properties:
     33  compatible:
     34    enum:
     35      - samsung,exynosautov9-cmu-top
     36      - samsung,exynosautov9-cmu-busmc
     37      - samsung,exynosautov9-cmu-core
     38      - samsung,exynosautov9-cmu-fsys2
     39      - samsung,exynosautov9-cmu-peric0
     40      - samsung,exynosautov9-cmu-peric1
     41      - samsung,exynosautov9-cmu-peris
     42
     43  clocks:
     44    minItems: 1
     45    maxItems: 5
     46
     47  clock-names:
     48    minItems: 1
     49    maxItems: 5
     50
     51  "#clock-cells":
     52    const: 1
     53
     54  reg:
     55    maxItems: 1
     56
     57allOf:
     58  - if:
     59      properties:
     60        compatible:
     61          contains:
     62            const: samsung,exynosautov9-cmu-top
     63
     64    then:
     65      properties:
     66        clocks:
     67          items:
     68            - description: External reference clock (26 MHz)
     69
     70        clock-names:
     71          items:
     72            - const: oscclk
     73
     74  - if:
     75      properties:
     76        compatible:
     77          contains:
     78            const: samsung,exynosautov9-cmu-busmc
     79
     80    then:
     81      properties:
     82        clocks:
     83          items:
     84            - description: External reference clock (26 MHz)
     85            - description: CMU_BUSMC bus clock (from CMU_TOP)
     86
     87        clock-names:
     88          items:
     89            - const: oscclk
     90            - const: dout_clkcmu_busmc_bus
     91
     92  - if:
     93      properties:
     94        compatible:
     95          contains:
     96            const: samsung,exynosautov9-cmu-core
     97
     98    then:
     99      properties:
    100        clocks:
    101          items:
    102            - description: External reference clock (26 MHz)
    103            - description: CMU_CORE bus clock (from CMU_TOP)
    104
    105        clock-names:
    106          items:
    107            - const: oscclk
    108            - const: dout_clkcmu_core_bus
    109
    110  - if:
    111      properties:
    112        compatible:
    113          contains:
    114            const: samsung,exynosautov9-cmu-fsys2
    115
    116    then:
    117      properties:
    118        clocks:
    119          items:
    120            - description: External reference clock (26 MHz)
    121            - description: CMU_FSYS2 bus clock (from CMU_TOP)
    122            - description: UFS clock (from CMU_TOP)
    123            - description: Ethernet clock (from CMU_TOP)
    124
    125        clock-names:
    126          items:
    127            - const: oscclk
    128            - const: dout_clkcmu_fsys2_bus
    129            - const: dout_fsys2_clkcmu_ufs_embd
    130            - const: dout_fsys2_clkcmu_ethernet
    131
    132  - if:
    133      properties:
    134        compatible:
    135          contains:
    136            const: samsung,exynosautov9-cmu-peric0
    137
    138    then:
    139      properties:
    140        clocks:
    141          items:
    142            - description: External reference clock (26 MHz)
    143            - description: CMU_PERIC0 bus clock (from CMU_TOP)
    144            - description: PERIC0 IP clock (from CMU_TOP)
    145
    146        clock-names:
    147          items:
    148            - const: oscclk
    149            - const: dout_clkcmu_peric0_bus
    150            - const: dout_clkcmu_peric0_ip
    151
    152  - if:
    153      properties:
    154        compatible:
    155          contains:
    156            const: samsung,exynosautov9-cmu-peric1
    157
    158    then:
    159      properties:
    160        clocks:
    161          items:
    162            - description: External reference clock (26 MHz)
    163            - description: CMU_PERIC1 bus clock (from CMU_TOP)
    164            - description: PERIC1 IP clock (from CMU_TOP)
    165
    166        clock-names:
    167          items:
    168            - const: oscclk
    169            - const: dout_clkcmu_peric1_bus
    170            - const: dout_clkcmu_peric1_ip
    171
    172  - if:
    173      properties:
    174        compatible:
    175          contains:
    176            const: samsung,exynosautov9-cmu-peris
    177
    178    then:
    179      properties:
    180        clocks:
    181          items:
    182            - description: External reference clock (26 MHz)
    183            - description: CMU_PERIS bus clock (from CMU_TOP)
    184
    185        clock-names:
    186          items:
    187            - const: oscclk
    188            - const: dout_clkcmu_peris_bus
    189
    190required:
    191  - compatible
    192  - "#clock-cells"
    193  - clocks
    194  - clock-names
    195  - reg
    196
    197additionalProperties: false
    198
    199examples:
    200  # Clock controller node for CMU_FSYS2
    201  - |
    202    #include <dt-bindings/clock/samsung,exynosautov9.h>
    203
    204    cmu_fsys2: clock-controller@17c00000 {
    205        compatible = "samsung,exynosautov9-cmu-fsys2";
    206        reg = <0x17c00000 0x8000>;
    207        #clock-cells = <1>;
    208
    209        clocks = <&xtcxo>,
    210                 <&cmu_top DOUT_CLKCMU_FSYS2_BUS>,
    211                 <&cmu_top DOUT_CLKCMU_FSYS2_UFS_EMBD>,
    212                 <&cmu_top DOUT_CLKCMU_FSYS2_ETHERNET>;
    213        clock-names = "oscclk",
    214                      "dout_clkcmu_fsys2_bus",
    215                      "dout_fsys2_clkcmu_ufs_embd",
    216                      "dout_fsys2_clkcmu_ethernet";
    217    };
    218
    219...