The cell paramater should have been last to match both the
DT_*_CELL_BY_NAME macros as well as how DT_PHA_BY_IDX works. We fix the
DT_INST_*_CELL_BY_NAME macros as well.
The dma macro's implemented the behavior correctly, but got the argument
names in correct. We fix that to make everything consistent.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Add the following macro's to get clock info by name:
DT_CLOCKS_LABEL_BY_NAME
DT_CLOCKS_CELL_BY_NAME
DT_INST_CLOCKS_LABEL_BY_NAME
DT_INST_CLOCKS_CELL_BY_NAME
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Co-Authored-By: Marti Bolivar <marti.bolivar@nordicsemi.no>
This is joint work with Kumar Gala (see signed-off-by).
Add helper macros which abstract the "true names" of each of the four
types of node identifier we intend to support (e.g. DT_ALIAS(),
DT_INST()).
These can be passed to a new DT_PROP() macro which can be used to read
the value of a devicetree property given a node identifier from one of
these four other macros, and the as-a-c-token name of the property.
Add other accessor macros and tests as well.
Add some convenience APIs for writing device drivers based on instance
numbers as well. Drivers can "#define DT_DRV_COMPAT driver_compatible"
at the top of the file, then utilize these DT_INST_* macros to access
various property defines.
For example, the uart_sifive driver can do:
#define DT_DRV_COMPAT sifive_uart0
Then use DT_INST macros like:
.port = DT_INST_REG_ADDR(0),
.sys_clk_freq = DT_INST_PROP(0, clock_frequency),
For convenience working with specific hardware, also add:
<devicetree/gpio.h>
<devicetree/adc.h>
<devicetree/spi.h>
Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
