Since v2, the compatible binding names have been changed to end in -bt, as requested by robh. Also the example has been expanded. As before, for these Realtek devices, are typicaly joint wifi and bluetooth devices; with seperate interfaces which will be independently wired to the cpu. For these devices wifi is sdio, whilst bluetooth is a uart. This patchset just sets the device tree links for the bluetooth interface. The example device tree source code, alas hasn't been tested. It is a copy of that used on the ASUS Tinker Board: https://github.com/TinkerBoard/debian_kernel/commit/6a3128ade33f758887048578ada61a4b7ab8e678 If these patches are accepted, my next job will be to mainline the rest of the Tinker Board patches - so if this element of the device tree has to change, I will also update the example here. Signed-off-by: David Summers <beagleboard@xxxxxxxxxxxxxxxxxxx> --- .../bindings/net/realtek-bluetooth-serial.txt | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/realtek-bluetooth-serial.txt diff --git a/Documentation/devicetree/bindings/net/realtek-bluetooth-serial.txt b/Documentation/devicetree/bindings/net/realtek-bluetooth-serial.txt new file mode 100644 index 000000000000..119f9db4f87f --- /dev/null +++ b/Documentation/devicetree/bindings/net/realtek-bluetooth-serial.txt @@ -0,0 +1,32 @@ +Realtek bluetooth devices connected via a UART. +These devices typically also have a wi-fi connected via sdio - the +compatible described here is used just for referencing the bluetooth. + +- compatible: should be "realtek,<name>-bt" + except for "realtek,trl8761atv" - which only has a serial bluetooth connection + "realtek,rtl8723as-bt" + "realtek,rtl8723bs-bt" + "realtek,rtl8723ds-bt" + "realtek,rtl8761atv" + "realtek,rtl8821as-bt" + "realtek,rtl8821cs-bt" + "realtek,rtl8822bs-bt" + +Example: + +&uart0 { + status = "okay"; + pinctrl-0 = <&uart0_xfer>, <&uart0_cts>; + bluetooth { + compatible = "realtek,rtl8723bs-bluetooth"; + uart_rts_gpios = <&gpio4 19 GPIO_ACTIVE_LOW>; + pinctrl-names = "default","rts_gpio"; + pinctrl-0 = <&uart0_rts>; + pinctrl-1 = <&uart0_gpios>; + BT,reset_gpio = <&gpio4 29 GPIO_ACTIVE_HIGH>; + BT,wake_gpio = <&gpio4 26 GPIO_ACTIVE_HIGH>; + BT,wake_host_irq = <&gpio4 31 GPIO_ACTIVE_HIGH>; + }; +}; + +this ensures that the bluetooth device is tied to the correct uart -- beagleboard@xxxxxxxxxxxxxxxxxxx
