Hi Loic, On Tue, Aug 22, 2017 at 10:27:43PM +0200, Loic Poulain wrote: > Hi Maxime, > > > > Thanks a lot for working on that, I've made a similar attempt a few > > > weeks ago but didn't manage to get it to work. > > > > > > The way it's hooked in our boards is a bit more complex though, even > > > if it could be because we're using a different part. > > > > > > In order to get it running we need: > > > - two clocks, called in the broadcom datasheets lpo and tcxo. > > > - three GPIOs, device wakeup, host wakeup and a shutdown GPIO (which > > > might be the BT_ON you were discussing about) > > > - two regulators called vbat and reg-en for us (I guess they're > > > meant to power the chip, and its registers >> > > > Do you know if you're also using those? Or could it be that it's just > > > hardwired to some non-gatable crystal / regulator on the RPI? > > Not on Pi3, but the three gpios and the clock are pretty common for > Broadcom bt controller (cf v4 of dt-bindings patch). > > This is already partially supported in the hci_bcm driver. > Today this driver registers a platform_driver(legacy/ACPI) and a > serdev_device_driver (new/DT). > > The platform driver retrieves the gpios and mainly uses them in pm ops. > Once the ACPI for serdev will be supported, this plat driver should be > removed. > > The serdev driver does no support this yet because I used the RPi3 > as dev platform. But this is something we want to have as well. I'll give it a shot then. Thanks! Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
Attachment:
signature.asc
Description: PGP signature
