Hi Marcel,
> Marcel Holtmann <marcel@xxxxxxxxxxxx> hat am 25. Februar 2018 um 22:38 geschrieben:
>
>
> Hi Stefan,
>
> >>> Add BCM43438 (bluetooth) as a serdev slave device of uart0 (pl011/ttyAMA0).
> >>> This allows to automatically insert the bcm43438 to the bluetooth
> >>> subsystem instead of relying on patched userspace helpers (hciattach).
> >>>
> >>> In order to keep a debug UART we need to switch to uart1.
> >>>
> >>> Signed-off-by: Stefan Wahren <stefan.wahren@xxxxxxxx>
> >>> ---
> >>> arch/arm/boot/dts/bcm2835-rpi-zero-w.dts | 14 +++++++++++++-
> >>> 1 file changed, 13 insertions(+), 1 deletion(-)
> >>>
> >>> diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
> >>> index cf53436..b7f79f1 100644
> >>> --- a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
> >>> +++ b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
> >>> @@ -131,6 +131,18 @@
> >>>
> >>> &uart0 {
> >>> pinctrl-names = "default";
> >>> - pinctrl-0 = <&uart0_gpio14>;
> >>> + pinctrl-0 = <&uart0_gpio32 &uart0_ctsrts_gpio30>;
> >>> + status = "okay";
> >>> +
> >>> + bluetooth {
> >>> + compatible = "brcm,bcm43438-bt";
> >>> + max-speed = <2000000>;
> >>> + shutdown-gpios = <&gpio 45 GPIO_ACTIVE_HIGH>;
> >>> + };
> >>> +};
> >>
> >> is the shutdown GPIO working as expected with this hardware. So even module unload and reload works fine?
> >
> > Yes, unload and reload works fine.
> >
> >> Meaning we are getting back to the 115200 default baud rate on the UART?
> >
> > I assume that, because reload works as expected.
>
> awesome. That is good news.
>
> Since you said that the GPIO expander driver for the RPi 3 has been accepted, did you test it there as well?
Currently not
> If so, then it would be good to get a patch that also provides shutdown-gpios for RPi 3.
Sure, but not before this weekend.
>
> Regards
>
> Marcel
>
>
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