32ced09d79
Convert the serial slave-device Device Tree binding documentation to json-schema, and incorporate it into the generic serial bindings. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Matthias Brugger <mbrugger@suse.com> Signed-off-by: Rob Herring <robh@kernel.org>
57 lines
1.9 KiB
Plaintext
57 lines
1.9 KiB
Plaintext
Broadcom 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 Broadcom devices.
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Serial attached Broadcom 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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* "brcm,bcm20702a1"
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* "brcm,bcm4329-bt"
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* "brcm,bcm4330-bt"
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* "brcm,bcm43438-bt"
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* "brcm,bcm4345c5"
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* "brcm,bcm43540-bt"
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* "brcm,bcm4335a0"
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Optional properties:
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- max-speed: see Documentation/devicetree/bindings/serial/serial.yaml
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- shutdown-gpios: GPIO specifier, used to enable the BT module
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- device-wakeup-gpios: GPIO specifier, used to wakeup the controller
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- host-wakeup-gpios: GPIO specifier, used to wakeup the host processor.
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deprecated, replaced by interrupts and
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"host-wakeup" interrupt-names
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- clocks: 1 or 2 clocks as defined in clock-names below, in that order
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- clock-names: names for clock inputs, matching the clocks given
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- "extclk": deprecated, replaced by "txco"
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- "txco": external reference clock (not a standalone crystal)
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- "lpo": external low power 32.768 kHz clock
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- vbat-supply: phandle to regulator supply for VBAT
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- vddio-supply: phandle to regulator supply for VDDIO
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- brcm,bt-pcm-int-params: configure PCM parameters via a 5-byte array
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- sco-routing: 0 = PCM, 1 = Transport, 2 = Codec, 3 = I2S
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- pcm-interface-rate: 128KBps, 256KBps, 512KBps, 1024KBps, 2048KBps
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- pcm-frame-type: short, long
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- pcm-sync-mode: slave, master
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- pcm-clock-mode: slave, master
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- interrupts: must be one, used to wakeup the host processor
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- interrupt-names: must be "host-wakeup"
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Example:
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&uart2 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart2_pins>;
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bluetooth {
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compatible = "brcm,bcm43438-bt";
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max-speed = <921600>;
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brcm,bt-pcm-int-params = [01 02 00 01 01];
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};
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};
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