diff --git a/boards/arm/stm32l496g_disco/doc/index.rst b/boards/arm/stm32l496g_disco/doc/index.rst
index 11b397df2cb..d5abf9d040f 100644
--- a/boards/arm/stm32l496g_disco/doc/index.rst
+++ b/boards/arm/stm32l496g_disco/doc/index.rst
@@ -170,7 +170,7 @@ Default Zephyr Peripheral Mapping:
 - LPUART_1 TX/RX : PG7/PG8 (Arduino Serial)
 - I2C1 SCL/SDA : PB8/PB7 (Arduino I2C)
 - SDMMC_1 D0/D1/D2/D3/CK/CMD: PC8/PC9/PC10/PC11/PC12/PD2
-- SPI1 SCK/MISO/MOSI : PA5/PB4/PB5 (Arduino SPI)
+- SPI1 NSS/SCK/MISO/MOSI : PA15/PA5/PB4/PB5 (Arduino SPI)
 - I2C_1_SCL : PB8
 - I2C_1_SDA : PB7
 - PWM_2_CH1 : PA0
diff --git a/boards/arm/stm32l496g_disco/stm32l496g_disco.dts b/boards/arm/stm32l496g_disco/stm32l496g_disco.dts
index 7020a005f83..20bf25548f0 100644
--- a/boards/arm/stm32l496g_disco/stm32l496g_disco.dts
+++ b/boards/arm/stm32l496g_disco/stm32l496g_disco.dts
@@ -120,6 +120,7 @@
 
 &spi1 {
 	pinctrl-0 = <&spi1_sck_pa5 &spi1_miso_pb4 &spi1_mosi_pb5>;
+	cs-gpios = <&gpioa 15 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
 	status = "okay";
 };