62 lines
1.9 KiB
Plaintext
62 lines
1.9 KiB
Plaintext
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Texas Instruments 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 TI Bluetooth devices. The following chips are included in this
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binding:
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* TI CC256x Bluetooth devices
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* TI WiLink 7/8 (wl12xx/wl18xx) Shared Transport BT/FM/GPS devices
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TI WiLink devices have a UART interface for providing Bluetooth, FM radio,
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and GPS over what's called "shared transport". The shared transport is
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standard BT HCI protocol with additional channels for the other functions.
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TI WiLink devices also have a separate WiFi interface as described in
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wireless/ti,wlcore.txt.
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This bindings follows the UART slave device binding in
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../serial/slave-device.txt.
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Required properties:
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- compatible: should be one of the following:
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"ti,cc2560"
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"ti,wl1271-st"
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"ti,wl1273-st"
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"ti,wl1281-st"
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"ti,wl1283-st"
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"ti,wl1285-st"
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"ti,wl1801-st"
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"ti,wl1805-st"
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"ti,wl1807-st"
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"ti,wl1831-st"
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"ti,wl1835-st"
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"ti,wl1837-st"
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Optional properties:
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- enable-gpios : GPIO signal controlling enabling of BT. Active high.
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- vio-supply : Vio input supply (1.8V)
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- vbat-supply : Vbat input supply (2.9-4.8V)
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- clocks : Must contain an entry, for each entry in clock-names.
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See ../clocks/clock-bindings.txt for details.
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- clock-names : Must include the following entry:
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"ext_clock" (External clock provided to the TI combo chip).
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- nvmem-cells: phandle to nvmem data cell that contains a 6 byte BD address
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with the most significant byte first (big-endian).
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- nvmem-cell-names: "bd-address" (required when nvmem-cells is specified)
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Example:
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&serial0 {
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compatible = "ns16550a";
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...
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bluetooth {
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compatible = "ti,wl1835-st";
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enable-gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
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clocks = <&clk32k_wl18xx>;
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clock-names = "ext_clock";
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nvmem-cells = <&bd_address>;
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nvmem-cell-names = "bd-address";
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};
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};
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