diff --git a/drivers/spi/spi-ath79.c b/drivers/spi/spi-ath79.c
index 497d5c028496..d1e287d2d9cd 100644
--- a/drivers/spi/spi-ath79.c
+++ b/drivers/spi/spi-ath79.c
@@ -153,6 +153,7 @@ static int ath79_spi_probe(struct platform_device *pdev)
 	master->use_gpio_descriptors = true;
 	master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32);
 	master->flags = SPI_MASTER_GPIO_SS;
+	master->num_chipselect = 3;
 
 	sp->bitbang.master = master;
 	sp->bitbang.chipselect = ath79_spi_chipselect;