diff --git a/src/soc/rockchip/common/spi.c b/src/soc/rockchip/common/spi.c
index 0e7376945b..86f2594285 100644
--- a/src/soc/rockchip/common/spi.c
+++ b/src/soc/rockchip/common/spi.c
@@ -330,13 +330,12 @@ static const struct spi_ctrlr spi_ctrlr = {
 	.max_xfer_size = 65535,
 };
 
-int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
-{
-	assert(bus < ARRAY_SIZE(rockchip_spi_slaves));
+const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
+	{
+		.ctrlr = &spi_ctrlr,
+		.bus_start = 0,
+		.bus_end = ARRAY_SIZE(rockchip_spi_slaves) - 1,
+	},
+};
 
-	slave->bus = bus;
-	slave->cs = cs;
-	slave->ctrlr = &spi_ctrlr;
-
-	return 0;
-}
+const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);