RF SPDT switches used for RX/TX selection have often power enable pin
connected to MCU's GPIO, so it is possible to disable it to save power
when not doing any data transfers. Add 'antenna-enable-gpios' property
to support such designs.
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Add support for TCXO power control using GPIO pin. Some boards
(including B-L072Z-LRWAN1 already supported in Zephyr) need delay
applied after powering on TCXO, so add device-tree property allowing to
configure that as well. Cache information about TCXO power status, so
subsequent requests to enable it will not result in unnecessary delays.
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
There are several antenna path designs on SX1276 compatible boards in
the wild. B-L072Z-LRWAN1 board has dedicated enable pins for RFI, RFO
and PA_BOOST. This is exactly what this patch allows to
configure. Second variant of antenna selection is done with a single
GPIO pin, which controls RF SPDT switches (input or output). This is
also supported, when either 'rfo-enable-gpios' or
'pa-boost-enable-gpios' property is provided alone (RFO/PA_BOOST is
selected only when transmitting, so there is no need for explicit
'rfi-enable-gpios' configuration).
Drop requirement for 'power-amplifier-output' DT property when there is
either 'rfo-enable-gpios' or 'pa-boost-enable-gpios' configured. Fail
using BUILD_ASSERT() when neither is specified.
Make the SX1276SetAntSw() logic similar to loramac-node examples
implementation, so RFO/PA_BOOST is enabled only in
RFLR_OPMODE_TRANSMITTER.
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
PA selection mainly depends on board design. So it looks like
device-tree is a better mechanism than Kconfig in this case. Use string
property with two possible values: "rfo" and "pa-boost".
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Update the lora/sx1276 driver to the new GPIO API, using configured
active level and the replacement interrupt and active-sensitive set
APIs.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Not needed. Bindings are never concatenated together.
Makes the https://github.com/zephyrproject-rtos/ci-tools/pull/123 check
clean, though it only looks at changed files in PRs.
Clean up the header too.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Marcin Niestroj