The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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

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    1 * Samsung's High Speed I2C controller
    2 
    3 The Samsung's High Speed I2C controller is used to interface with I2C devices
    4 at various speeds ranging from 100khz to 3.4Mhz.
    5 
    6 Required properties:
    7   - compatible: value should be.
    8         -> "samsung,exynos5-hsi2c", (DEPRECATED)
    9                                 for i2c compatible with HSI2C available
   10                                 on Exynos5250 and Exynos5420 SoCs.
   11         -> "samsung,exynos5250-hsi2c", for i2c compatible with HSI2C available
   12                                 on Exynos5250 and Exynos5420 SoCs.
   13         -> "samsung,exynos5260-hsi2c", for i2c compatible with HSI2C available
   14                                 on Exynos5260 SoCs.
   15         -> "samsung,exynos7-hsi2c", for i2c compatible with HSI2C available
   16                                 on Exynos7 SoCs.
   17 
   18   - reg: physical base address of the controller and length of memory mapped
   19     region.
   20   - interrupts: interrupt number to the cpu.
   21   - #address-cells: always 1 (for i2c addresses)
   22   - #size-cells: always 0
   23 
   24   - Pinctrl:
   25     - pinctrl-0: Pin control group to be used for this controller.
   26     - pinctrl-names: Should contain only one value - "default".
   27 
   28 Optional properties:
   29   - clock-frequency: Desired operating frequency in Hz of the bus.
   30     -> If not specified, the bus operates in fast-speed mode at
   31        at 100khz.
   32     -> If specified, the bus operates in high-speed mode only if the
   33        clock-frequency is >= 1Mhz.
   34 
   35 Example:
   36 
   37 hsi2c@12ca0000 {
   38         compatible = "samsung,exynos5250-hsi2c";
   39         reg = <0x12ca0000 0x100>;
   40         interrupts = <56>;
   41         clock-frequency = <100000>;
   42 
   43         pinctrl-0 = <&i2c4_bus>;
   44         pinctrl-names = "default";
   45 
   46         #address-cells = <1>;
   47         #size-cells = <0>;
   48 
   49         s2mps11_pmic@66 {
   50                 compatible = "samsung,s2mps11-pmic";
   51                 reg = <0x66>;
   52         };
   53 };

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