linux-kernel - [PATCH] arm64: dts: ipq8074: add the reserved-memory region

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Message-ID: <1641559822-31825-1-git-send-email-quic_kathirav@quicinc.com>
Date:   Fri, 7 Jan 2022 18:20:22 +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] arm64: dts: ipq8074: add the reserved-memory region

On IPQ8074, 4MB of memory is needed for TZ. So mark that region
as reserved.

Signed-off-by: Kathiravan T <quic_kathirav@...cinc.com>
---
 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 6c6a0f853669..b4d813c27230 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