diff --git a/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
index 01a4a9da7afc..f59094701a4a 100644
--- a/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
@@ -9,23 +9,31 @@
 #include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
 
 /*
- * Signals of SW_CONFIG switches:
- * @SW_SD0_DEV_SEL:
- *	0 - SD0 is connected to eMMC
- *	1 - SD0 is connected to uSD0 card
- * @SW_SD2_EN:
- *	0 - SCIF1, SSI0, IRQ0, IRQ1 connected to SoC
- *	1 - SD2 is connected to SoC
+ * On-board switches' states:
+ * @SW_OFF: switch's state is OFF
+ * @SW_ON:  switch's state is ON
  */
-#define SW_SD0_DEV_SEL	1
-#define SW_SD2_EN	1
+#define SW_OFF		0
+#define SW_ON		1
+
+/*
+ * SW_CONFIG[x] switches' states:
+ * @SW_CONFIG2:
+ *	SW_OFF - SD0 is connected to eMMC
+ *	SW_ON  - SD0 is connected to uSD0 card
+ * @SW_CONFIG3:
+ *	SW_OFF - SD2 is connected to SoC
+ *	SW_ON  - SCIF1, SSI0, IRQ0, IRQ1 connected to SoC
+ */
+#define SW_CONFIG2	SW_ON
+#define SW_CONFIG3	SW_OFF
 
 / {
 	compatible = "renesas,rzg3s-smarcm", "renesas,r9a08g045s33", "renesas,r9a08g045";
 
 	aliases {
 		mmc0 = &sdhi0;
-#if SW_SD2_EN
+#if SW_CONFIG3 == SW_OFF
 		mmc2 = &sdhi2;
 #endif
 	};
@@ -50,7 +58,7 @@
 		enable-active-high;
 	};
 
-#if SW_SD0_DEV_SEL
+#if SW_CONFIG2 == SW_ON
 	vccq_sdhi0: regulator1 {
 		compatible = "regulator-gpio";
 		regulator-name = "SDHI0 VccQ";
@@ -85,7 +93,7 @@
 	clock-frequency = <24000000>;
 };
 
-#if SW_SD0_DEV_SEL
+#if SW_CONFIG2 == SW_ON
 /* SD0 slot */
 &sdhi0 {
 	pinctrl-0 = <&sdhi0_pins>;
@@ -116,7 +124,7 @@
 };
 #endif
 
-#if SW_SD2_EN
+#if SW_CONFIG3 == SW_OFF
 &sdhi2 {
 	pinctrl-0 = <&sdhi2_pins>;
 	pinctrl-names = "default";