samsung,exynos4210-mct.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/timer/samsung,exynos4210-mct.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Samsung Exynos SoC Multi Core Timer (MCT)
    8 
    9 maintainers:
   10   - Krzysztof Kozlowski <krzk@kernel.org>
   11 
   12 description: |+
   13   The Samsung's Multi Core Timer (MCT) module includes two main blocks, the
   14   global timer and CPU local timers. The global timer is a 64-bit free running
   15   up-counter and can generate 4 interrupts when the counter reaches one of the
   16   four preset counter values. The CPU local timers are 32-bit free running
   17   down-counters and generate an interrupt when the counter expires. There is
   18   one CPU local timer instantiated in MCT for every CPU in the system.
   19 
   20 properties:
   21   compatible:
   22     oneOf:
   23       - enum:
   24           - samsung,exynos4210-mct
   25           - samsung,exynos4412-mct
   26       - items:
   27           - enum:
   28               - samsung,exynos3250-mct
   29               - samsung,exynos5250-mct
   30               - samsung,exynos5260-mct
   31               - samsung,exynos5420-mct
   32               - samsung,exynos5433-mct
   33               - samsung,exynos850-mct
   34               - tesla,fsd-mct
   35           - const: samsung,exynos4210-mct
   36 
   37   clocks:
   38     maxItems: 2
   39 
   40   clock-names:
   41     items:
   42       - const: fin_pll
   43       - const: mct
   44 
   45   reg:
   46     maxItems: 1
   47 
   48   interrupts:
   49     description: |
   50       Interrupts should be put in specific order. This is, the local timer
   51       interrupts should be specified after the four global timer interrupts
   52       have been specified:
   53       0: Global Timer Interrupt 0
   54       1: Global Timer Interrupt 1
   55       2: Global Timer Interrupt 2
   56       3: Global Timer Interrupt 3
   57       4: Local Timer Interrupt 0
   58       5: Local Timer Interrupt 1
   59       6: ..
   60       7: ..
   61       i: Local Timer Interrupt n
   62       For MCT block that uses a per-processor interrupt for local timers, such
   63       as ones compatible with "samsung,exynos4412-mct", only one local timer
   64       interrupt might be specified, meaning that all local timers use the same
   65       per processor interrupt.
   66     minItems: 5               # 4 Global + 1 local
   67     maxItems: 20              # 4 Global + 16 local
   68 
   69 required:
   70   - compatible
   71   - clock-names
   72   - clocks
   73   - interrupts
   74   - reg
   75 
   76 allOf:
   77   - if:
   78       properties:
   79         compatible:
   80           contains:
   81             const: samsung,exynos3250-mct
   82     then:
   83       properties:
   84         interrupts:
   85           minItems: 8
   86           maxItems: 8
   87 
   88   - if:
   89       properties:
   90         compatible:
   91           contains:
   92             const: samsung,exynos5250-mct
   93     then:
   94       properties:
   95         interrupts:
   96           minItems: 6
   97           maxItems: 6
   98 
   99   - if:
  100       properties:
  101         compatible:
  102           contains:
  103             enum:
  104               - samsung,exynos5260-mct
  105               - samsung,exynos5420-mct
  106               - samsung,exynos5433-mct
  107               - samsung,exynos850-mct
  108     then:
  109       properties:
  110         interrupts:
  111           minItems: 12
  112           maxItems: 12
  113 
  114   - if:
  115       properties:
  116         compatible:
  117           contains:
  118             enum:
  119               - tesla,fsd-mct
  120     then:
  121       properties:
  122         interrupts:
  123           minItems: 16
  124           maxItems: 16
  125 
  126 additionalProperties: false
  127 
  128 examples:
  129   - |
  130     // In this example, the IP contains two local timers, using separate
  131     // interrupts, so two local timer interrupts have been specified,
  132     // in addition to four global timer interrupts.
  133     #include <dt-bindings/clock/exynos4.h>
  134     #include <dt-bindings/interrupt-controller/arm-gic.h>
  135 
  136     timer@10050000 {
  137         compatible = "samsung,exynos4210-mct";
  138         reg = <0x10050000 0x800>;
  139         clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MCT>;
  140         clock-names = "fin_pll", "mct";
  141 
  142         interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
  143                      <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
  144                      <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>,
  145                      <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>,
  146                      <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>,
  147                      <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
  148     };
  149 
  150   - |
  151     // In this example, the timer interrupts are connected to two separate
  152     // interrupt controllers. Hence, an interrupts-extended is needed.
  153     #include <dt-bindings/clock/exynos4.h>
  154     #include <dt-bindings/interrupt-controller/arm-gic.h>
  155 
  156     timer@101c0000 {
  157         compatible = "samsung,exynos4210-mct";
  158         reg = <0x101C0000 0x800>;
  159         clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MCT>;
  160         clock-names = "fin_pll", "mct";
  161 
  162         interrupts-extended = <&gic GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
  163                               <&gic GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
  164                               <&combiner 12 6>,
  165                               <&combiner 12 7>,
  166                               <&gic GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>,
  167                               <&gic GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
  168     };
  169 
  170   - |
  171     // In this example, the IP contains four local timers, but using
  172     // a per-processor interrupt to handle them. Only one first local
  173     // interrupt is specified.
  174     #include <dt-bindings/clock/exynos4.h>
  175     #include <dt-bindings/interrupt-controller/arm-gic.h>
  176 
  177     timer@10050000 {
  178         compatible = "samsung,exynos4412-mct";
  179         reg = <0x10050000 0x800>;
  180         clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MCT>;
  181         clock-names = "fin_pll", "mct";
  182 
  183         interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
  184                      <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
  185                      <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>,
  186                      <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>,
  187                      <GIC_PPI 42 IRQ_TYPE_LEVEL_HIGH>;
  188     };
  189 
  190   - |
  191     // In this example, the IP contains four local timers, but using
  192     // a per-processor interrupt to handle them. All the local timer
  193     // interrupts are specified.
  194     #include <dt-bindings/clock/exynos4.h>
  195     #include <dt-bindings/interrupt-controller/arm-gic.h>
  196 
  197     timer@10050000 {
  198         compatible = "samsung,exynos4412-mct";
  199         reg = <0x10050000 0x800>;
  200         clocks = <&clock CLK_FIN_PLL>, <&clock CLK_MCT>;
  201         clock-names = "fin_pll", "mct";
  202 
  203         interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
  204                      <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
  205                      <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>,
  206                      <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>,
  207                      <GIC_PPI 42 IRQ_TYPE_LEVEL_HIGH>,
  208                      <GIC_PPI 42 IRQ_TYPE_LEVEL_HIGH>,
  209                      <GIC_PPI 42 IRQ_TYPE_LEVEL_HIGH>,
  210                      <GIC_PPI 42 IRQ_TYPE_LEVEL_HIGH>;
  211     };

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