From: Vignesh Viswanathan <quic_viswanat@quicinc.com>
Date: Tue, 12 Aug 2025 04:52:12 +0000 (+0530)
Subject: arm64: dts: qcom: ipq5424: Add reserved memory for TF-A
X-Git-Tag: v6.18-rc1~147^2~32^2~31
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=8517204c982b1b36db766099a38cf752258dcd06;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: qcom: ipq5424: Add reserved memory for TF-A

IPQ5424 supports both TZ and TF-A as secure software options and various
DDR sizes. In most cases, TF-A or TZ is loaded at the same memory
location, but in the 256MB DDR configuration TF-A is loaded at a different
region.

So, add the reserved memory node for TF-A and keep it disabled by default.
During bootup, U-Boot will detect which secure software is running and
enable or disable the node accordingly.

Signed-off-by: Vignesh Viswanathan <quic_viswanat@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250812-atf-reserved-mem-v2-1-1adb94a998c1@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---

diff --git a/arch/arm64/boot/dts/qcom/ipq5424.dtsi b/arch/arm64/boot/dts/qcom/ipq5424.dtsi
index 67877fbbdf3a0..ef2b52f3597d9 100644
--- a/arch/arm64/boot/dts/qcom/ipq5424.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5424.dtsi
@@ -211,6 +211,12 @@
 
 			hwlocks = <&tcsr_mutex 3>;
 		};
+
+		tfa@8a832000 {
+			reg = <0x0 0x8a832000 0x0 0x7d000>;
+			no-map;
+			status = "disabled";
+		};
 	};
 
 	soc@0 {