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Qualcomm WCNSS Binding
This binding describes the Qualcomm WCNSS hardware. It consists of control
block and a BT, WiFi and FM radio block, all using SMD as command channels.
- compatible:
Usage: required
Value type: <string>
Definition: must be: "qcom,wcnss",
- qcom,smd-channel:
Usage: required
Value type: <string>
Definition: standard SMD property specifying the SMD channel used for
communication with the WiFi firmware.
Should be "WCNSS_CTRL".
- qcom,mmio:
Usage: required
Value type: <prop-encoded-array>
Definition: reference to a node specifying the wcnss "ccu" and "dxe"
register blocks. The node must be compatible with one of
the following:
"qcom,riva",
"qcom,pronto"
- firmware-name:
Usage: optional
Value type: <string>
Definition: specifies the relative firmware image path for the WLAN NV
blob. Defaults to "wlan/prima/WCNSS_qcom_wlan_nv.bin" if
not specified.
= SUBNODES
The subnodes of the wcnss node are optional and describe the individual blocks in
the WCNSS.
== Bluetooth
The following properties are defined to the bluetooth node:
- compatible:
Usage: required
Value type: <string>
Definition: must be:
"qcom,wcnss-bt"
- local-bd-address:
Usage: optional
Value type: <u8 array>
Definition: see Documentation/devicetree/bindings/net/bluetooth.txt
== WiFi
The following properties are defined to the WiFi node:
- compatible:
Usage: required
Value type: <string>
Definition: must be one of:
"qcom,wcnss-wlan",
- interrupts:
Usage: required
Value type: <prop-encoded-array>
Definition: should specify the "rx" and "tx" interrupts
- interrupt-names:
Usage: required
Value type: <stringlist>
Definition: must contain "rx" and "tx"
- qcom,smem-state:
Usage: required
Value type: <prop-encoded-array>
Definition: should reference the tx-enable and tx-rings-empty SMEM states
- qcom,smem-state-names:
Usage: required
Value type: <stringlist>
Definition: must contain "tx-enable" and "tx-rings-empty"
= EXAMPLE
The following example represents a SMD node, with one edge representing the
"pronto" subsystem, with the wcnss device and its wcn3680 BT and WiFi blocks
described; as found on the 8974 platform.
smd {
compatible = "qcom,smd";
pronto-edge {
interrupts = <0 142 1>;
qcom,ipc = <&apcs 8 17>;
qcom,smd-edge = <6>;
wcnss {
compatible = "qcom,wcnss";
qcom,smd-channels = "WCNSS_CTRL";
#address-cells = <1>;
#size-cells = <1>;
qcom,mmio = <&pronto>;
bt {
compatible = "qcom,wcnss-bt";
/* BD address 00:11:22:33:44:55 */
local-bd-address = [ 55 44 33 22 11 00 ];
};
wlan {
compatible = "qcom,wcnss-wlan";
interrupts = <0 145 0>, <0 146 0>;
interrupt-names = "tx", "rx";
qcom,smem-state = <&apps_smsm 10>, <&apps_smsm 9>;
qcom,smem-state-names = "tx-enable", "tx-rings-empty";
};
};
};
};
soc {
pronto: pronto {
compatible = "qcom,pronto";
reg = <0xfb204000 0x2000>, <0xfb202000 0x1000>, <0xfb21b000 0x3000>;
reg-names = "ccu", "dxe", "pmu";
};
};
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