[PATCH v3 4/6] arm64: dts: qcom: ipq5018: Add the IMEM node
From: Kathiravan Thirumoorthy
Date: Sat Feb 28 2026 - 08:10:20 EST
Add the IMEM node to the device tree to extract debugging information
like system restart reason, which is populated via IMEM. Define the
IMEM region to enable this functionality.
As described, overall IMEM region is 80KB but only initial 4KB is
accessible by all masters in the SoC.
Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@xxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/ipq5018.dtsi | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/ipq5018.dtsi b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
index 6f8004a22a1ffdb6da0be410b772be5fe0473eef..591adae3918322f97a5dcd8b191be1b50344e3d1 100644
--- a/arch/arm64/boot/dts/qcom/ipq5018.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
@@ -567,6 +567,17 @@ qpic_nand: spi@79b0000 {
status = "disabled";
};
+ sram@8600000 {
+ compatible = "qcom,ipq5018-imem", "mmio-sram";
+ reg = <0x08600000 0x14000>;
+ ranges = <0 0x08600000 0x14000>;
+
+ no-memory-wc;
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+
usb: usb@8af8800 {
compatible = "qcom,ipq5018-dwc3", "qcom,dwc3";
reg = <0x08af8800 0x400>;
--
2.34.1