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 | 55 ++++++++++++++++++++++
1 file changed, 55 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..977978dd4444
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
@@ -0,0 +1,55 @@
+Qualcomm Camera Control Interface (CCI) I2C controller
+
+Required properties:
+ - compatible: Should be one of:
+ - "qcom,cci-v1.0.8" for 8916;
+ - "qcom,cci-v1.4.0" for 8996.
+ - #address-cells: Should be <1>.
+ - #size-cells: Should be <0>.
+ - reg: Base address of the I2C controller and length of memory mapped region.
+ - interrupts: Specifier for CCI I2C interrupt.
+ - clocks: List of clock specifiers, one for each entry in clock-names.
+ - clock-names: Should contain:
+ - "mmss_mmagic_ahb" - on qcom,cci-v1.4.0 only;
+ - "camss_top_ahb";
+ - "cci_ahb";
+ - "cci";
+ - "camss_ahb".
+
+Required subnodes:
+ - i2c-bus instances:
+ Mandatory i2c-bus0 subnode
+ Mandatory i2c-bus1 for qcom,cci-v1.4.0
+ - Optional properties:
+ - clock-frequency: Desired I2C bus clock frequency
+ in Hz, defaults to 100 kHz if omitted.
+
+Required properties on qcom,cci-v1.4.0:
+ - power-domains: Power domain specifier.
+
+Example:
+
+ cci@a0c000 {
+ compatible = "qcom,cci-v1.4.0";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0xa0c000 0x1000>;
+ interrupts = <GIC_SPI 295 IRQ_TYPE_EDGE_RISING>;
+ power-domains = <&mmcc CAMSS_GDSC>;
+ 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
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