Add some helper macros that will be convenient to use from device
drivers for accessing and error checking pin mux information in the
devicetree:
- NRF_DT_PSEL(): get a PSEL value out of the DT from either a
'foo-pin' or a 'foo-gpios' style property.
- NRF_DT_PSEL_CHECK_NOT_BOTH(), NRF_DT_PSEL_CHECK_EXACTLY_ONE():
helpers for checking that a given devicetree is OK according to
different criteria for setting PSEL properties (NAND or XOR on
whether the properties exist, respectively).
See comments in the patch for more details.
Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
This was merged by mistake without being tested and is not working
properly. We need to avoid doing a BUILD_ASSERT() when the relevant
property is missing, because we can't use DT_GPIO_CTLR() on an
undefined property. Handle this with COND_CODE_1().
Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
Add some helper macros that will be convenient to use from device
drivers for accessing and error checking pin mux information in the
devicetree:
- NRF_DT_GPIOS_TO_PSEL(): converts a devicetree GPIO phandle
<&gpioX pin flags> to the "PSEL style" registers found in
nRF SoC family IPs. The conversion is done at
build time and relies on devicetree properties.
- NRF_DT_CHECK_GPIO_CTLR_IS_SOC(): make sure a GPIO controller
in a phandle-array property is one of the SoC GPIO controllers
by checking its compatible is nordic,nrf-gpio.
See comments in the patch for more details.
Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
Martí Bolívar