Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt

   1 Qualcomm Camera Control Interface (CCI) I2C controller
   2
   3 PROPERTIES:
   4
   5 - compatible:
   6         Usage: required
   7         Value type: <string>
   8         Definition: must be one of:
   9                 "qcom,msm8916-cci"
  10                 "qcom,msm8996-cci"
  11                 "qcom,sdm845-cci"
  12                 "qcom,sm8250-cci"
  13                 "qcom,sm8450-cci"
  14
  15 - reg
  16         Usage: required
  17         Value type: <prop-encoded-array>
  18         Definition: base address CCI I2C controller and length of memory
  19                     mapped region.
  20
  21 - interrupts:
  22         Usage: required
  23         Value type: <prop-encoded-array>
  24         Definition: specifies the CCI I2C interrupt. The format of the
  25                     specifier is defined by the binding document describing
  26                     the node's interrupt parent.
  27
  28 - clocks:
  29         Usage: required
  30         Value type: <prop-encoded-array>
  31         Definition: a list of phandle, should contain an entry for each
  32                     entries in clock-names.
  33
  34 - clock-names
  35         Usage: required
  36         Value type: <string>
  37         Definition: a list of clock names, must include "cci" clock.
  38
  39 - power-domains
  40         Usage: required for "qcom,msm8996-cci"
  41         Value type: <prop-encoded-array>
  42         Definition:
  43
  44 SUBNODES:
  45
  46 The CCI provides I2C masters for one (msm8916) or two i2c busses (msm8996,
  47 sdm845, sm8250 and sm8450), described as subdevices named "i2c-bus@0" and
  48 "i2c-bus@1".
  49
  50 PROPERTIES:
  51
  52 - reg:
  53         Usage: required
  54         Value type: <u32>
  55         Definition: Index of the CCI bus/master
  56
  57 - clock-frequency:
  58         Usage: optional
  59         Value type: <u32>
  60         Definition: Desired I2C bus clock frequency in Hz, defaults to 100
  61                     kHz if omitted.
  62
  63 Example:
  64
  65         cci@a0c000 {
  66                 compatible = "qcom,msm8996-cci";
  67                 #address-cells = <1>;
  68                 #size-cells = <0>;
  69                 reg = <0xa0c000 0x1000>;
  70                 interrupts = <GIC_SPI 295 IRQ_TYPE_EDGE_RISING>;
  71                 clocks = <&mmcc MMSS_MMAGIC_AHB_CLK>,
  72                          <&mmcc CAMSS_TOP_AHB_CLK>,
  73                          <&mmcc CAMSS_CCI_AHB_CLK>,
  74                          <&mmcc CAMSS_CCI_CLK>,
  75                          <&mmcc CAMSS_AHB_CLK>;
  76                 clock-names = "mmss_mmagic_ahb",
  77                               "camss_top_ahb",
  78                               "cci_ahb",
  79                               "cci",
  80                               "camss_ahb";
  81
  82                 i2c-bus@0 {
  83                         reg = <0>;
  84                         clock-frequency = <400000>;
  85                         #address-cells = <1>;
  86                         #size-cells = <0>;
  87                 };
  88
  89                 i2c-bus@1 {
  90                         reg = <1>;
  91                         clock-frequency = <400000>;
  92                         #address-cells = <1>;
  93                         #size-cells = <0>;
  94                 };
  95         };