linux-kernel - [PATCH 07/11] ARM: dts: stm32: phycore-stm32mp15: Add dummy memory-node

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Message-ID: <20250227154012.259566-8-c.parant@phytec.fr>
Date: Thu, 27 Feb 2025 16:40:08 +0100
From: Christophe Parant <c.parant@...tec.fr>
To: <devicetree@...r.kernel.org>, <linux-stm32@...md-mailman.stormreply.com>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
CC: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Maxime Coquelin
	<mcoquelin.stm32@...il.com>, Alexandre Torgue <alexandre.torgue@...s.st.com>,
	<upstream@...ts.phytec.de>
Subject: [PATCH 07/11] ARM: dts: stm32: phycore-stm32mp15: Add dummy memory-node

"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 <c.parant@...tec.fr>
---
 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@...00000 {
+		device_type = "memory";
+		reg = <0xc0000000 0x20000000>;
+	};
+
 	reserved-memory {
 		#address-cells = <1>;
 		#size-cells = <1>;
-- 
2.34.1