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3c8e42a793
The external clock is provided to the TI WiLink combo chip and it's needed
for any of the transport interfaces. However let's make it optional to
avoid breaking existing platforms that yet doesn't specify the clock.
Fixes: ea45267873 ("arm64: dts: hikey: Fix WiFi support")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
48 lines
1.3 KiB
Plaintext
48 lines
1.3 KiB
Plaintext
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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These 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,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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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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};
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};
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