SPI controller driver warning for TI

[malto101]

I’m getting a warning in the Zephyr SPI loopback test for my driver for beaglebone AI64 (zephyr/tests/drivers/spi/spi_loopback) about duplicate unit addresses. Specifically, my board’s device tree flags this error:

/build/zephyr/zephyr.dts:123.10-127.5:
Warning (unique_unit_address_if_enabled): /spi@2160000/slow@0: duplicate unit-address (also used in node /spi@2160000/fast@0)

Other boards in the test also use slow@0 and fast@0 in their overlay but don’t trigger this warning. Could anyone help me in figuring this out, why is this happening?