Qualcomm Bluetooth Chips
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---------------------
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This documents the binding structure and common properties for serial
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attached Qualcomm devices.
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Serial attached Qualcomm devices shall be a child node of the host UART
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device the slave device is attached to.
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Required properties:
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- compatible: should contain one of the following:
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* "qcom,qca6174-bt"
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* "qcom,qca9377-bt"
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* "qcom,wcn3990-bt"
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* "qcom,wcn3991-bt"
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* "qcom,wcn3998-bt"
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* "qcom,qca6390-bt"
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Optional properties for compatible string qcom,qca6174-bt:
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- enable-gpios: gpio specifier used to enable chip
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- clocks: clock provided to the controller (SUSCLK_32KHZ)
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- firmware-name: specify the name of nvm firmware to load
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Optional properties for compatible string qcom,qca9377-bt:
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- max-speed: see Documentation/devicetree/bindings/serial/serial.yaml
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Required properties for compatible string qcom,wcn399x-bt:
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- vddio-supply: VDD_IO supply regulator handle.
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- vddxo-supply: VDD_XO supply regulator handle.
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- vddrf-supply: VDD_RF supply regulator handle.
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- vddch0-supply: VDD_CH0 supply regulator handle.
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Optional properties for compatible string qcom,wcn399x-bt:
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- max-speed: see Documentation/devicetree/bindings/serial/serial.yaml
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- firmware-name: specify the name of nvm firmware to load
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- clocks: clock provided to the controller
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Examples:
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serial@7570000 {
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label = "BT-UART";
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status = "okay";
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bluetooth {
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compatible = "qcom,qca6174-bt";
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enable-gpios = <&pm8994_gpios 19 GPIO_ACTIVE_HIGH>;
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clocks = <&divclk4>;
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firmware-name = "nvm_00440302.bin";
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};
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};
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serial@898000 {
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bluetooth {
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compatible = "qcom,wcn3990-bt";
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vddio-supply = <&vreg_s4a_1p8>;
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vddxo-supply = <&vreg_l7a_1p8>;
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vddrf-supply = <&vreg_l17a_1p3>;
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vddch0-supply = <&vreg_l25a_3p3>;
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max-speed = <3200000>;
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firmware-name = "crnv21.bin";
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clocks = <&rpmhcc RPMH_RF_CLK2>;
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};
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};
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