[PATCH v3 5/6] arm64: dts: qcom: ipq9574: Add the IMEM node
From: Kathiravan Thirumoorthy
Date: Sat Feb 28 2026 - 08:10:52 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 32KB 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/ipq9574.dtsi | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
index d7278f2137ac58305cc4e82c1d6c26c08bc7a405..2ed111139c579787069def7f29f2d07e9a454e04 100644
--- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
@@ -741,6 +741,17 @@ usb_0_qmpphy: phy@7d000 {
status = "disabled";
};
+ sram@8600000 {
+ compatible = "qcom,ipq9574-imem", "mmio-sram";
+ reg = <0x08600000 0x8000>;
+ ranges = <0 0x08600000 0x8000>;
+
+ no-memory-wc;
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+
usb3: usb@8af8800 {
compatible = "qcom,ipq9574-dwc3", "qcom,dwc3";
reg = <0x08af8800 0x400>;
--
2.34.1