From: Todor Tomov <todor.tomov@xxxxxxxxxx>
Add DT binding document for Qualcomm Camera Control Interface (CCI)
I2C controller.
Signed-off-by: Todor Tomov <todor.tomov@xxxxxxxxxx>
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
---
.../devicetree/bindings/i2c/i2c-qcom-cci.txt | 83 ++++++++++++++++++++++
1 file changed, 83 insertions(+)
create mode 100644 Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
diff --git a/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt b/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
new file mode 100644
index 000000000000..b7f4240ce5c8
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
@@ -0,0 +1,83 @@
+Qualcomm Camera Control Interface (CCI) I2C controller
+
+PROPERTIES:
+
+- compatible:
+ Usage: required
+ Value type: <string>
+ Definition: must be one of:
+ "qcom,msm-8916-cci"
+ "qcom,msm-8996-cci"
+
+- reg
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: base address CCI I2C controller and length of memory
+ mapped region.
+
+- interrupts:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: specifies the CCI I2C interrupt. The format of the
+ specifier is defined by the binding document describing
+ the node's interrupt parent.
+
+- clocks:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: a list of phandle, should contain an entry for each
+ entries in clock-names.
+
+- clock-names
+ Usage: required
+ Value type: <string>
+ Definition: a list of clock names, must include these entries:
+ "mmss_mmagic_ahb" - on "qcom,msm-8996-cci" only;
+ "camss_top_ahb";
+ "cci_ahb";
+ "cci";
+ "camss_ahb";
+
+- power-domains
+ Usage: required for "qcom,msm-8996-cci"
+ Value type: <prop-encoded-array>
+ Definition:
+
+SUBNODES:
+
+The CCI provides I2C masters for one or two i2c busses, described as
+subdevices named "i2c-bus0" and "i2c-bus1".
+
+PROPERTIES:
+
+- clock-frequency:
+ Usage: optional
+ Value type: <u32>
+ Definition: Desired I2C bus clock frequency in Hz, defaults to 100
+ kHz if omitted.
+
+Example:
+
+ cci@a0c000 {
+ compatible = "qcom,msm-8996-cci";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0xa0c000 0x1000>;
+ interrupts = <GIC_SPI 295 IRQ_TYPE_EDGE_RISING>;
+ clocks = <&mmcc MMSS_MMAGIC_AHB_CLK>,
+ <&mmcc CAMSS_TOP_AHB_CLK>,
+ <&mmcc CAMSS_CCI_AHB_CLK>,
+ <&mmcc CAMSS_CCI_CLK>,
+ <&mmcc CAMSS_AHB_CLK>;
+ clock-names = "mmss_mmagic_ahb",
+ "camss_top_ahb",
+ "cci_ahb",
+ "cci",
+ "camss_ahb";
+ i2c-bus0 {
+ clock-frequency = <400000>;
+ };
+ i2c-bus1 {
+ clock-frequency = <400000>;
+ };
+ };
--
2.14.4
