Hi Marcel, > Marcel Holtmann <marcel@xxxxxxxxxxxx> hat am 23. August 2017 um 16:19 geschrieben: > > > Hi Loic, > > >>> 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). > > once we get the GPIO expander driver upstream, I think we also need this for RPI 3 and Zero W. Right now we can just not do anything about this. AFAIK the Zero W doesn't have this GPIO expander. Would it be easier for you? -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
