Macros
#define	DT_CAN_TRANSCEIVER_MAX_BITRATE(node_id, max)
	Get the maximum transceiver bitrate for a CAN controller.

#define	DT_INST_CAN_TRANSCEIVER_MAX_BITRATE(inst, max) DT_CAN_TRANSCEIVER_MAX_BITRATE(DT_DRV_INST(inst), max)
	Get the maximum transceiver bitrate for a DT_DRV_COMPAT CAN controller.

Detailed Description

Macro Definition Documentation

◆ DT_CAN_TRANSCEIVER_MAX_BITRATE

#define DT_CAN_TRANSCEIVER_MAX_BITRATE	(	node_id,
		max
	)

#include <zephyr/devicetree/can.h>

Value:

        COND_CODE_1(DT_NODE_HAS_PROP(node_id, phys),                                    \
                    MIN(DT_PROP(DT_PHANDLE(node_id, phys), max_bitrate), max),          \
                    MIN(DT_PROP_OR(DT_CHILD(node_id, can_transceiver), max_bitrate, max), max))

Get the maximum transceiver bitrate for a CAN controller.

The bitrate will be limited to the maximum bitrate supported by the CAN controller. If no CAN transceiver is present in the devicetree, the maximum bitrate will be that of the CAN controller.

Example devicetree fragment:

transceiver0: can-phy0 {
        compatible = "vnd,can-transceiver";
        max-bitrate = <1000000>;
        #phy-cells = <0>;
};

can0: can@... {
        compatible = "vnd,can-controller";
        phys = <&transceiver0>;
};

can1: can@... {
        compatible = "vnd,can-controller";

        can-transceiver {
                max-bitrate = <2000000>;
        };
};

Example usage:

DT_CAN_TRANSCEIVER_MAX_BITRATE(DT_NODELABEL(can0), 5000000) // 1000000
DT_CAN_TRANSCEIVER_MAX_BITRATE(DT_NODELABEL(can1), 5000000) // 2000000
DT_CAN_TRANSCEIVER_MAX_BITRATE(DT_NODELABEL(can1), 1000000) // 1000000

Parameters

node_id	node identifier
max	maximum bitrate supported by the CAN controller

Returns: the maximum bitrate supported by the CAN controller/transceiver combination

◆ DT_INST_CAN_TRANSCEIVER_MAX_BITRATE

#define DT_INST_CAN_TRANSCEIVER_MAX_BITRATE	(	inst,
		max
	)	DT_CAN_TRANSCEIVER_MAX_BITRATE(DT_DRV_INST(inst), max)