The peripheral is the same on the SAMD20 and SAMD21 except for
different clock and interrupt settings. There is no DAC on the SAMR21.
Leave disabled by default as the DAC is fairly power hungry.
Signed-off-by: Michael Hope <mlhx@google.com>
The SAMD21 series has three timer/counters with a mix of channels and
resolutions. Note that the SAMD20 only has TC peripherals and no TCC
peripherals which is why the changes are in samd21.dtsi.
Signed-off-by: Michael Hope <mlhx@google.com>
Add clock references for ADC and TC devices. Update the bindings for
these devices to require clocks property and update the dtsi files to
have the clock info.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Move the atmel,sam0-dmac binding under the dma binding dir and add
cell information for channel and trigger source. Update the associated
dtsi files to match these changes.
This is in prep of ATMEL SAM0 SERCOMM devices like UART, I2C, and SPI to
user proper 'dmas' property to specify the dma info to use.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Add support for the GCLK, MCLK, and PM clock controllers. Add bindings
and devicetree nodes associated with these clock controllers. Also add
clock references for the SERCOM peripheral set to allow those drivers
(i2c, spi, uart) to utilize this information.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit renames `samd.dtsi` to `samd2x.dtsi` since this DTS header
is specific to the SAM D2x series and its derivatives (e.g. SAM R21).
Note that the SAM D5x series uses a different DTS header file (i.e.
`samd5x.dtsi`) due to the vast differences, and the future SAM D1x will
have to use a separate DTS header to be sensible anyway.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
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>
Michael Hope