diff --git a/drivers/display/display_gc9x01x.c b/drivers/display/display_gc9x01x.c
index 963e0dbe7a69a..09baf0588fda4 100644
--- a/drivers/display/display_gc9x01x.c
+++ b/drivers/display/display_gc9x01x.c
@@ -215,6 +215,11 @@ static const struct gc9x01x_default_init_regs default_init_regs[] = {
 		.len = 2U,
 		.data = {0x3EU, 0x07U},
 	},
+	{
+		.cmd = 0x21U,
+		.len = 1U,
+		.data = {0x00U},
+	},
 };
 
 static int gc9x01x_transmit(const struct device *dev, uint8_t cmd, const void *tx_data,
diff --git a/dts/bindings/display/galaxycore,gc9x01x.yaml b/dts/bindings/display/galaxycore,gc9x01x.yaml
index 7867de55a0dea..82348674eae75 100644
--- a/dts/bindings/display/galaxycore,gc9x01x.yaml
+++ b/dts/bindings/display/galaxycore,gc9x01x.yaml
@@ -44,6 +44,7 @@ properties:
 
   display-inversion:
     type: boolean
+    default: false
     description: |
       Display inversion mode. Every bit is inverted from the frame memory to
       the display.