i2c-exynos5.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/i2c/i2c-exynos5.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Samsung's High Speed I2C controller
    8 
    9 maintainers:
   10   - Krzysztof Kozlowski <krzk@kernel.org>
   11 
   12 description: |
   13   The Samsung's High Speed I2C controller is used to interface with I2C devices
   14   at various speeds ranging from 100kHz to 3.4MHz.
   15 
   16   In case the HSI2C controller is encapsulated within USI block (it's the case
   17   e.g. for Exynos850 and Exynos Auto V9 SoCs), it might be also necessary to
   18   define USI node in device tree file, choosing "i2c" configuration. Please see
   19   Documentation/devicetree/bindings/soc/samsung/exynos-usi.yaml for details.
   20 
   21 properties:
   22   compatible:
   23     oneOf:
   24       - enum:
   25           - samsung,exynos5250-hsi2c    # Exynos5250 and Exynos5420
   26           - samsung,exynos5260-hsi2c    # Exynos5260
   27           - samsung,exynos7-hsi2c       # Exynos7
   28           - samsung,exynosautov9-hsi2c  # ExynosAutoV9 and Exynos850
   29       - const: samsung,exynos5-hsi2c    # Exynos5250 and Exynos5420
   30         deprecated: true
   31 
   32   reg:
   33     maxItems: 1
   34 
   35   interrupts:
   36     maxItems: 1
   37 
   38   clock-frequency:
   39     default: 100000
   40     description:
   41       Desired operating frequency in Hz of the bus.
   42 
   43       If not specified, the bus operates in fast-speed mode at 100kHz.
   44 
   45       If specified, the bus operates in high-speed mode only if the
   46       clock-frequency is >= 1MHz.
   47 
   48   clocks:
   49     minItems: 1
   50     items:
   51       - description: I2C operating clock
   52       - description: Bus clock (APB)
   53 
   54   clock-names:
   55     minItems: 1
   56     items:
   57       - const: hsi2c
   58       - const: hsi2c_pclk
   59 
   60 required:
   61   - compatible
   62   - reg
   63   - interrupts
   64   - clocks
   65 
   66 allOf:
   67   - $ref: /schemas/i2c/i2c-controller.yaml#
   68   - if:
   69       properties:
   70         compatible:
   71           contains:
   72             enum:
   73               - samsung,exynosautov9-hsi2c
   74 
   75     then:
   76       properties:
   77         clocks:
   78           minItems: 2
   79 
   80         clock-names:
   81           minItems: 2
   82 
   83       required:
   84         - clock-names
   85 
   86     else:
   87       properties:
   88         clocks:
   89           maxItems: 1
   90 
   91 unevaluatedProperties: false
   92 
   93 examples:
   94   - |
   95     #include <dt-bindings/clock/exynos5420.h>
   96     #include <dt-bindings/interrupt-controller/arm-gic.h>
   97     #include <dt-bindings/interrupt-controller/irq.h>
   98 
   99     hsi2c_8: i2c@12e00000 {
  100         compatible = "samsung,exynos5250-hsi2c";
  101         reg = <0x12e00000 0x1000>;
  102         interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>;
  103         #address-cells = <1>;
  104         #size-cells = <0>;
  105         clock-frequency = <100000>;
  106         clocks = <&clock CLK_USI4>;
  107         clock-names = "hsi2c";
  108 
  109         pmic@66 {
  110             /* compatible = "samsung,s2mps11-pmic"; */
  111             reg = <0x66>;
  112         };
  113     };
  114 
  115   - |
  116     #include <dt-bindings/clock/exynos850.h>
  117     #include <dt-bindings/interrupt-controller/arm-gic.h>
  118 
  119     hsi2c_2: i2c@138c0000 {
  120         compatible = "samsung,exynosautov9-hsi2c";
  121         reg = <0x138c0000 0xc0>;
  122         interrupts = <GIC_SPI 195 IRQ_TYPE_LEVEL_HIGH>;
  123         #address-cells = <1>;
  124         #size-cells = <0>;
  125         clocks = <&cmu_peri CLK_GOUT_HSI2C2_IPCLK>,
  126                  <&cmu_peri CLK_GOUT_HSI2C2_PCLK>;
  127         clock-names = "hsi2c", "hsi2c_pclk";
  128 
  129         pmic@66 {
  130             /* compatible = "samsung,s2mps11-pmic"; */
  131             reg = <0x66>;
  132         };
  133     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/i2c/i2c-exynos5.yaml

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sys/contrib/device-tree/Bindings/i2c/i2c-exynos5.yaml