The pinctrl node was missing which change the pin mux to GPIO mode.
Add it so we don't have to rely on the bootloader to set the correct
mode.

Fixes: 79d83b3a458e ("ARM: dts: lan966x: add basic Kontron KSwitch D10 support")
Signed-off-by: Michael Walle <mwalle@kernel.org>
---
 arch/arm/boot/dts/lan966x-kontron-kswitch-d10-mmt.dtsi | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/lan966x-kontron-kswitch-d10-mmt.dtsi b/arch/arm/boot/dts/lan966x-kontron-kswitch-d10-mmt.dtsi
index f86e2e751403..2e16217ac88e 100644
--- a/arch/arm/boot/dts/lan966x-kontron-kswitch-d10-mmt.dtsi
+++ b/arch/arm/boot/dts/lan966x-kontron-kswitch-d10-mmt.dtsi
@@ -41,7 +41,7 @@ &flx3 {
 	status = "okay";
 
 	spi3: spi@400 {
-		pinctrl-0 = <&fc3_b_pins>;
+		pinctrl-0 = <&fc3_b_pins>, <&spi3_cs_pins>;
 		pinctrl-names = "default";
 		status = "okay";
 		cs-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
@@ -79,6 +79,12 @@ sgpio_b_pins: sgpio-b-pins {
 		function = "sgpio_b";
 	};
 
+	spi3_cs_pins: spi3-cs-pins {
+		/* CS# */
+		pins = "GPIO_46";
+		function = "gpio";
+	};
+
 	usart0_pins: usart0-pins {
 		/* RXD, TXD */
 		pins = "GPIO_25", "GPIO_26";

-- 
2.30.2