Remove all optional, initial CAN sample point properties and rely on the
CAN timing calculations to automatically pick the preferred sample point
location based on the initial bitrate.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Consistently use "int0" and "int1" as interrupt names for CAN controllers
based on the Bosch M_CAN IP core. This aligns with the upstream Linux
bindings.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Update the descriptions for the various CAN devicetree timing properties
specified in Time Quanta (TQ) to make it clear that these, if present, are
only used for the initial timing parameters.
Deprecate the (Re-)Synchronization Jump Width (SJW) devicetree properties
for both arbitration and data phase timing as these are now only used in
combination with the other TQ-based CAN timing properties, which are all
deprecated.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Restructure the Bosch M_CAN driver backend to use per-instance Message RAM
configuration.
This removes the need for a common, artificial "can" devicetree node for
SoCs with multiple Bosch M_CAN-based CAN controllers and allows for
per-instance configuration of the number of e.g. standard (11-bit) and
extended (29-bit) filter elements.
As part of the restructure, software handling of CAN filter flags was moved
from per-flags bitfields to per-filter bitfields, solving an issue when
using more than 32 standard (11-bit) filter elements or more than 16
extended (29-bit) filter elements.
Fixes: #42030, #53417
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Switch the Bosch M_CAN devicetree binding to use a bosch,mram-cfg property
for specifying the memory layout of the Bosch M_CAN Message RAM. This is
identical to the Linux kernel devicetree binding for Bosch M_CAN IP core
based CAN controllers.
This introduces an offset cell which can be used for controllers with
shared Message RAM between Bosch M_CAN instances.
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
Adds Atmel SAMC20 and SAMC21 soc. C series is based on Cortex-M0+.
C21 contains CAN interface.
The init routines are same for SAMC20 and SAMC21. They use one
clock OSC48M without configuration.
The code is inspirated from atmel_sam0/samd21.
Signed-off-by: Kamil Serwus <kserwus@gmail.com>
Henrik Brix Andersen