diff --git a/board/CZ.NIC/turris_mox/turris_mox.c b/board/CZ.NIC/turris_mox/turris_mox.c
index 377191baef..0b13d1d190 100644
--- a/board/CZ.NIC/turris_mox/turris_mox.c
+++ b/board/CZ.NIC/turris_mox/turris_mox.c
@@ -67,9 +67,11 @@ int board_fix_fdt(void *blob)
 	 * to read SPI by reading/writing SPI registers directly
 	 */
 
-	writel(0x563fa, ARMADA_37XX_NB_GPIO_SEL);
 	writel(0x10df, ARMADA_37XX_SPI_CFG);
-	writel(0x2005b, ARMADA_37XX_SPI_CTRL);
+	/* put pin from GPIO to SPI mode */
+	clrbits_le32(ARMADA_37XX_NB_GPIO_SEL, BIT(12));
+	/* enable SPI CS1 */
+	setbits_le32(ARMADA_37XX_SPI_CTRL, BIT(17));
 
 	while (!(readl(ARMADA_37XX_SPI_CTRL) & 0x2))
 		udelay(1);
@@ -89,7 +91,8 @@ int board_fix_fdt(void *blob)
 
 	size = i;
 
-	writel(0x5b, ARMADA_37XX_SPI_CTRL);
+	/* disable SPI CS1 */
+	clrbits_le32(ARMADA_37XX_SPI_CTRL, BIT(17));
 
 	if (size > 1 && (topology[1] == MOX_MODULE_PCI ||
 			 topology[1] == MOX_MODULE_USB3 ||