DT510: CAN — MCP2518xx on ECSPI2 (Tier C4)

[ajlennon]

Parent tracking

Sub-issue of #2 (DT510 BSP bring-up plan).

Scope (Tier C4)

Enable CAN using Microchip MCP2518xx (or SSOT-confirmed variant) on &ecspi2.

Current state

• DT510: &ecspi2 disabled — not used for XM125 (Sentai only); bus free for CAN per audit.
• Kernel: mcp251xfd / SPI CAN drivers are upstream; confirm exact part and interrupt GPIO.

Work

• Confirm pinmux / CS / IRQ from SSOT vs imx8mm-jaguar-dt510.dts.
• Enable &ecspi2 + SPI node + MCP25xxFD compatible string + CONFIG_CAN_MCP251XFD (or matching driver).
• Userspace validation: ip link, candump / loopback test with transceiver.

References

• docs/DT510-BSP-PROJECT-PLAN.md §5 C4

Assignees

Per parent #2: @ajlennon @ohull456