linux-kernel - [PATCH v3] arm64: dts: qcom: ipq8074: add the reserved-memory node

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Date:   Mon, 24 Jan 2022 20:35:51 +0530
From:   Kathiravan T <quic_kathirav@...cinc.com>
To:     <agross@...nel.org>, <bjorn.andersson@...aro.org>,
        <robh+dt@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Kathiravan T <quic_kathirav@...cinc.com>
Subject: [PATCH v3] arm64: dts: qcom: ipq8074: add the reserved-memory node

4MB of memory is needed for TZ. So mark that region as reserved
appropriately.

Signed-off-by: Kathiravan T <quic_kathirav@...cinc.com>
---
Changes since v2:
	* Rebased on top of v5.17-rc1
	* Reworded the commit message and title
Changes since v1:
        * Fixed the commit title

 arch/arm64/boot/dts/qcom/ipq8074.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/ipq8074.dtsi b/arch/arm64/boot/dts/qcom/ipq8074.dtsi
index e6cc261201ef..26ba7ce9222c 100644
--- a/arch/arm64/boot/dts/qcom/ipq8074.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq8074.dtsi
@@ -82,6 +82,17 @@
 		};
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		memory@...00000 {
+			no-map;
+			reg = <0x0 0x4ac00000 0x0 0x00400000>;
+		};
+	};
+
 	soc: soc {
 		#address-cells = <0x1>;
 		#size-cells = <0x1>;
-- 
2.7.4