diff --git a/ft2232_spi.c b/ft2232_spi.c
index be60837..3889eed 100644
--- a/ft2232_spi.c
+++ b/ft2232_spi.c
@@ -159,6 +159,7 @@
 
 static const struct spi_master spi_master_ft2232 = {
 	.type		= SPI_CONTROLLER_FT2232,
+	.features	= SPI_MASTER_4BA,
 	.max_data_read	= 64 * 1024,
 	.max_data_write	= 256,
 	.command	= ft2232_spi_send_command,