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dt-bindings: Add device-tree bindings for BT power driver

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Add Documentation file for bluetooth power driver.

Change-Id: I9bbb0470ed0760335f65aedb82d3d9b90755abf9
This commit is contained in:
Umesh Vats
2019-08-29 16:07:05 -07:00
committed by Gerrit - the friendly Code Review server
parent 069297083c
commit 6f1f3d72aa
1 changed files with 50 additions and 0 deletions
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bindings/bluetooth/btpower.txt Normal file
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* Bluetooth Controller
Bluetooth controller communicates with the Bluetooth Host using HCI Transport
layer. HCI Transport layer can be based on UART or USB serial communication
protocol.
Required properties:
- compatible: "qcom,<chip>"
chip: Should be set to one of the following:
qcom,qca6174
qcom,wcn3990
qcom,qca6390
qcom,qca6490
- qcom,bt-reset-gpio: GPIO pin to bring BT Controller out of reset
Optional properties:
- qcom,bt-vdd-pa-supply: Bluetooth VDD PA regulator handle
- qcom,bt-vdd-io-supply: Bluetooth VDD IO regulator handle
- qcom,bt-vdd-ldo-supply: Bluetooth VDD LDO regulator handle. Kept under
optional parameters as some of the chipsets doesn't require ldo
or it may use from same vddio.
- qcom,bt-vdd-xtal-supply: Bluetooth VDD XTAL regulator handle
- qcom,bt-vdd-core-supply: Bluetooth VDD CORE regulator handle
- qcom,bt-vdd-asd-supply: Bluetooth VDD regulator handle for antenna switch
diversity.
- qcom,bt-chip-pwd-supply: Chip power down gpio is required when bluetooth
module and other modules like wifi co-exist in a singe chip and
shares a common gpio to bring chip out of reset.
- qcom,<supply>-config: Specifies voltage/current levels for supply. Should specified
in pairs (min, max), units uV. There can be optional
load in curr, unit uA. Last entry specifies if the retention
mode is supported for the regulator.
Example:
bluetooth: bt_qca6490 {
compatible = "qcom,qca6390", "qcom,qca6490";
pinctrl-names = "default";
pinctrl-0 = <&bt_en_sleep>;
qcom,bt-reset-gpio = <&tlmm 21 0>; /* BT_EN */
qcom,bt-vdd-aon-supply = <&pm8150_s6>;
qcom,bt-vdd-dig-supply = <&pm8009_s2>;
qcom,bt-vdd-rfa1-supply = <&pm8150_s5>;
qcom,bt-vdd-rfa2-supply = <&pm8150a_s8>;
qcom,bt-vdd-asd-supply = <&pm8150_l16>;
qcom,bt-vdd-aon-config = <950000 950000 0 1>;
qcom,bt-vdd-dig-config = <950000 952000 0 1>;
qcom,bt-vdd-rfa1-config = <1900000 1900000 0 1>;
qcom,bt-vdd-rfa2-config = <1350000 1350000 0 1>;
qcom,bt-vdd-asd-config = <3024000 3304000 10000 0>;
};