[PATCH v3 5/5] arm64: dts: qcom: shikra: add RAS error source nodes

[Umang Chheda]

ARM Reliability, Availability and Serviceability (RAS) enables
processor components (for eg cache, tlb etc) to record and signal
hardware faults through architected error records and fault handling
interrupts. This allows software to detect, report and, where possible,
recover from hardware errors.

The Shikra CPU subsystem implements RAS error records for the L1/L2
cache hierarchy and the shared L3 caches. Describe these error sources
in Device Tree so that the ARM RAS framework can discover them and
handle cache-related error reports.

Co-developed-by: Faruque Ansari <faruque.ansari@xxxxxxxxxxxxxxxx>
Signed-off-by: Faruque Ansari <faruque.ansari@xxxxxxxxxxxxxxxx>
Signed-off-by: Umang Chheda <umang.chheda@xxxxxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/shikra.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/shikra.dtsi b/arch/arm64/boot/dts/qcom/shikra.dtsi
index c1f06f692f66..c5bbf1f8e46a 100644
--- a/arch/arm64/boot/dts/qcom/shikra.dtsi
+++ b/arch/arm64/boot/dts/qcom/shikra.dtsi
@@ -330,6 +330,26 @@ opp-2208000000 {
 		};
 	};

+	l2-cache-error {
+		compatible = "arm,ras-processor";
+		arm,num-records = <1>;
+		arm,record-impl = /bits/ 64 <0x1>;
+		arm,status-reporting = /bits/ 64 <0x1>;
+		arm,cache-ref = <&l2_3>;
+		interrupts = <GIC_PPI 6 IRQ_TYPE_LEVEL_LOW 0>;
+		interrupt-names = "fhi";
+	};
+
+	l3-cache-error {
+		compatible = "arm,ras-processor";
+		arm,num-records = <2>;
+		arm,record-impl = /bits/ 64 <0x2>;
+		arm,status-reporting = /bits/ 64 <0x2>;
+		arm,cache-ref = <&l3>;
+		interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH 0>;
+		interrupt-names = "fhi";
+	};
+
 	modem-etm0 {
 		compatible = "arm,coresight-dummy-source";

--
2.34.1