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