On Mon, Feb 18, 2019 at 1:10 PM Rob Herring <r...@kernel.org> wrote: > > On Fri, Jan 18, 2019 at 09:02:27AM -0800, Vasily Khoruzhick wrote: > > Add binding document for bluetooth part of RTL8723BS/RTL8723CS > > > > Signed-off-by: Vasily Khoruzhick <anars...@gmail.com> > > --- > > .../bindings/net/rtl8723bs-bluetooth.txt | 35 +++++++++++++++++++ > > 1 file changed, 35 insertions(+) > > create mode 100644 > > Documentation/devicetree/bindings/net/rtl8723bs-bluetooth.txt > > > > diff --git a/Documentation/devicetree/bindings/net/rtl8723bs-bluetooth.txt > > b/Documentation/devicetree/bindings/net/rtl8723bs-bluetooth.txt > > new file mode 100644 > > index 000000000000..8357f242ae4c > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/net/rtl8723bs-bluetooth.txt > > @@ -0,0 +1,35 @@ > > +RTL8723BS/RTL8723CS Bluetooth > > +--------------------- > > + > > +RTL8723CS/RTL8723CS is WiFi + BT chip. WiFi part is connected over SDIO, > > while > > +BT is connected over serial. It speaks H5 protocol with few extra commands > > +to upload firmware and change module speed. > > + > > +Required properties: > > + > > + - compatible: should be one of the following: > > + * "realtek,rtl8723bs-bt" > > + * "realtek,rtl8723cs-bt" > > +Optional properties: > > + > > + - device-wake-gpios: GPIO specifier, used to wakeup the BT module (active > > high) > > + - enable-gpios: GPIO specifier, used to enable the BT module (active high) > > + - host-wake-gpios: GPIO specifier, used to wakeup the host processor > > (active high) > > + - firmware-postfix: firmware postfix to be used for firmware config > > How is this used?
rtl8723bs-bt needs 2 firmware binaries -- one is actual firmware, another is firmware config which is specific to the board. If firmware-postfix is specified, driver appends it to the name of config and requests board-specific config while loading firmware. I.e. if 'pine64' is specified as firmware-postfix driver will load rtl8723bs_config-pine64.bin. > Rob >
