"memory" node is not necessary as the bootloader is taking care of
passing the correct DDR size.
However keep a dummy memory node with the minimum DDR size (512MB) with
comment explaining that.

Signed-off-by: Christophe Parant <redacted>
---
 arch/arm/boot/dts/st/stm32mp15xx-phycore-som.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/st/stm32mp15xx-phycore-som.dtsi b/arch/arm/boot/dts/st/stm32mp15xx-phycore-som.dtsi
index 72926c3de52c..ce859b94ae26 100644
--- a/arch/arm/boot/dts/st/stm32mp15xx-phycore-som.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp15xx-phycore-som.dtsi

@@ -22,6 +22,15 @@ aliases {
 		rtc1 = &rtc;
 	};
 
+	/*
+	 * Set the minimum memory size here and
+	 * let the bootloader set the real size.
+	 */
+	memory@c0000000 {
+		device_type = "memory";
+		reg = <0xc0000000 0x20000000>;
+	};
+
 	reserved-memory {
 		#address-cells = <1>;
 		#size-cells = <1>;

-- 
2.34.1