diff -Naru linux-4.9.87.orig/drivers/spi/spidev.c linux-4.9.87/drivers/spi/spidev.c
--- linux-4.9.87.orig/drivers/spi/spidev.c	2018-12-13 14:17:40.000000000 -0600
+++ linux-4.9.87/drivers/spi/spidev.c	2018-12-17 10:13:53.752668552 -0600
@@ -696,6 +696,7 @@
 static const struct of_device_id spidev_dt_ids[] = {
 	{ .compatible = "rohm,dh2228fv" },
 	{ .compatible = "lineartechnology,ltc2488" },
+	{ .compatible = "mts,mtac" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, spidev_dt_ids);