diff mbox series

[v4,5/5] arm64: dts: qcom: ipq5424: add support to get watchdog bootstatus from IMEM

Message ID 20250519-wdt_reset_reason-v4-5-d59d21275c75@oss.qualcomm.com
State New
Headers show
Series Add support to read the watchdog bootstatus from IMEM | expand

Commit Message

Kathiravan Thirumoorthy May 19, 2025, 8:34 a.m. UTC 
Add the "qcom,imem" property to the watchdog device node to enable
retrieval of the system restart reason from IMEM, populated by XBL.
Parse this information in the watchdog driver and update the bootstatus
sysFS if the restart was triggered by a watchdog timeout.

Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@oss.qualcomm.com>
---
Changes in v4:
	- New patch
---
 arch/arm64/boot/dts/qcom/ipq5424.dtsi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/ipq5424.dtsi b/arch/arm64/boot/dts/qcom/ipq5424.dtsi
index 4f18ea79502738c2b9cb4b13e8eb4ac4ddd89adf..8952d769dad4ec4635759d6eae8344aaf1d8a79e 100644
--- a/arch/arm64/boot/dts/qcom/ipq5424.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5424.dtsi
@@ -380,6 +380,7 @@  watchdog@f410000 {
 			reg = <0 0x0f410000 0 0x1000>;
 			interrupts = <GIC_SPI 0 IRQ_TYPE_EDGE_RISING>;
 			clocks = <&sleep_clk>;
+			qcom,imem = <&imem 0x7b0 0x5>;
 		};
 
 		qusb_phy_1: phy@71000 {
@@ -486,7 +487,7 @@  ssphy_0: phy@7d000 {
 			status = "disabled";
 		};
 
-		sram@8600000 {
+		imem: sram@8600000 {
 			compatible = "qcom,ipq5424-imem", "syscon", "simple-mfd";
 			reg = <0 0x08600000 0 0x1c000>;
 			ranges = <0 0 0x08600000 0x1c000>;