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drivers: can: mcan: add transceiver support

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Add support for CAN transceivers to the Bosch M_CAN CAN drivers.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
This commit is contained in:
Henrik Brix Andersen 2022-03-01 16:02:08 +01:00 • committed by Maureen Helm
commit d8e88b61eb
6 changed files with 118 additions and 10 deletions
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17
drivers/can/can_mcux_mcan.c
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@ -6,6 +6,7 @@
#include <device.h>
#include <drivers/can.h>
#include <drivers/can/transceiver.h>
#include <drivers/clock_control.h>
#include <logging/log.h>
@ -98,6 +99,15 @@ static int mcux_mcan_get_core_clock(const struct device *dev, uint32_t *rate)
rate);
}
int mcux_mcan_get_max_bitrate(const struct device *dev, uint32_t *max_bitrate)
{
const struct mcux_mcan_config *config = dev->config;
*max_bitrate = config->mcan.max_bitrate;
return 0;
}
static void mcux_mcan_line_0_isr(const struct device *dev)
{
const struct mcux_mcan_config *config = dev->config;
@ -149,6 +159,7 @@ static const struct can_driver_api mcux_mcan_driver_api = {
.get_state = mcux_mcan_get_state,
.set_state_change_callback = mcux_mcan_set_state_change_callback,
.get_core_clock = mcux_mcan_get_core_clock,
.get_max_bitrate = mcux_mcan_get_max_bitrate,
/*
* MCUX MCAN timing limits are specified in the "Nominal bit timing and
* prescaler register (NBTP)" table in the SoC reference manual.
@ -215,7 +226,9 @@ static const struct can_driver_api mcux_mcan_driver_api = {
DT_INST_PROP_OR(n, phase_seg1_data, 0), \
.ts2_data = DT_INST_PROP_OR(n, phase_seg2_data, 0), \
.tx_delay_comp_offset = \
DT_INST_PROP(n, tx_delay_comp_offset) \
DT_INST_PROP(n, tx_delay_comp_offset), \
.phy = DEVICE_DT_GET_OR_NULL(DT_INST_PHANDLE(n, phys)), \
.max_bitrate = DT_INST_CAN_TRANSCEIVER_MAX_BITRATE(n, 5000000), \
}
#else /* CONFIG_CAN_FD_MODE */
#define MCUX_MCAN_MCAN_INIT(n) \
@ -227,6 +240,8 @@ static const struct can_driver_api mcux_mcan_driver_api = {
.prop_ts1 = DT_INST_PROP_OR(n, prop_seg, 0) + \
DT_INST_PROP_OR(n, phase_seg1, 0), \
.ts2 = DT_INST_PROP_OR(n, phase_seg2, 0), \
.phy = DEVICE_DT_GET_OR_NULL(DT_INST_PHANDLE(n, phys)), \
.max_bitrate = DT_INST_CAN_TRANSCEIVER_MAX_BITRATE(n, 1000000), \
}
#endif /* !CONFIG_CAN_FD_MODE */