This adds support for the basic timer counter (TC) found on SAM0
series parts. This driver only supports running the counter
in 32 bit wide mode. Since this mode explicitly slaves the odd
counters to the even ones, only instances of the even ones are
defined.
Tested with tests/drivers/counter/counter_basic_api on SAMD21.
Signed-off-by: Derek Hageman <hageman@inthat.cloud>
This adds support for the SAM0 DMA Controller (DMAC). Chained
transfer are not currently implemented.
Tested with tests/drivers/dma/loop_transfer and custom modifications
to that test using three parallel reloading channels. Also tested
with a trivial program that did memory->serial.
Signed-off-by: Michael Hope <mlhx@google.com>
[hageman@inthat.cloud: Rebased and updated commit message]
Signed-off-by: Derek Hageman <hageman@inthat.cloud>
SAMD20 does not have the DMA or USB peripherals and as a result
the IRQs for all subsequent lines are shifted down from SAMD21.
This splits the interrupt assignment for the SERCOMs into the
SoC specific DTS file and moves the USB definition to SAMD21 only.
Signed-off-by: Derek Hageman <hageman@inthat.cloud>
samd21.dtsi includes now the same content need for SAMD20,
move it to samd.dtsi and include it from samd21.dtsi.
Then later USB support can be added to the samd21.dtsi seperatly
from the samd20 etc.
Signed-off-by: Sean Nyekjaer <sean@nyekjaer.dk>
Since not all boards enable all devices, we typically have the SoC dtsi
file have a device marked with status = "disabled" and have the
board.dts explicitly enable with status = "ok". Update it so USB on
Atmel SAMD21 work this way.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Switch the SoC device tree to define a single entry per SERCOM instead
of one per mode.
Define a Device Tree binding for the SAM0 SPI and use it instead of
Kconfig for enabling / disabaling instances
Switch the Arduino Zero, Adafruit Feather M0 Basic Proto, and
Trinket M0 to use the new defintion.
Add the APA102 LED that's on the Trinket as a test.
Signed-off-by: Michael Hope <mlhx@google.com>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Pin multiplexing is a function of the PORT peripheral. This change
defines a separate pinmux device at the same address as the PORTs
themselves.
Signed-off-by: Michael Hope <mlhx@google.com>
Convert Atmel SAM0 flash driver to use device tree to get the flash
controller name and base address.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Where missing add compatible = "soc-nv-flash". Also added a label for
all the soc-nv-flash that we might use in the future.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
The SAM0 has a 64 byte page (the programing unit) with 4 pages to a
row (the erase unit). This driver implements a read/modify/write to
emulate the byte level writes used by NFFS.
Signed-off-by: Michael Hope <mlhx@google.com>
Derek Hageman