linux-kernel - [PATCH v3 6/6] arm64: dts: ti: k3-am65: Add ESM nodes

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Message-ID: <20240815204833.452132-7-jm@ti.com>
Date: Thu, 15 Aug 2024 15:48:33 -0500
From: Judith Mendez <jm@...com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, Nishanth Menon <nm@...com>
CC: Vignesh Raghavendra <vigneshr@...com>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Jan Kiszka <jan.kiszka@...mens.com>,
        <linux-arm-kernel@...ts.infradead.org>, Judith Mendez <jm@...com>
Subject: [PATCH v3 6/6] arm64: dts: ti: k3-am65: Add ESM nodes

Add Error Signaling Module (ESM) instances in MCU and MAIN
domains, set ESM interrupt sources for rti as per TRM [0] 9.4
Interrupt Sources.

There are no ESM0_ESM_INT* events routed to MCU ESM, so it is
not possible to reset the CPU using watchdog and ESM0
configuration. However add ESM instances for device completion.

Add comments to describe what interrupt sources are routed to
ESM modules.

[0] https://www.ti.com/lit/ug/spruid7e/spruid7e.pdf

Signed-off-by: Judith Mendez <jm@...com>
---
Changes since v2:
- Fix commit message for patch 6/6
---
 arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 8 ++++++++
 arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi  | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
index 1af3dedde1f67..07c9f043dac0b 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
@@ -54,6 +54,14 @@ gic_its: msi-controller@...0000 {
 		};
 	};
 
+	main_esm: esm@...000 {
+		compatible = "ti,j721e-esm";
+		reg = <0x00 0x700000 0x00 0x1000>;
+		/* Interrupt sources: rti0, rti1, rti2, rti3 */
+		ti,esm-pins = <224>, <225>, <226>, <227>;
+		bootph-pre-ram;
+	};
+
 	serdes0: serdes@...000 {
 		compatible = "ti,phy-am654-serdes";
 		reg = <0x0 0x900000 0x0 0x2000>;
diff --git a/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
index 43c6118d2bf0f..e10cb9f483698 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
@@ -440,6 +440,14 @@ mcu_r5fss0_core1: r5f@...00000 {
 		};
 	};
 
+	mcu_esm: esm@...00000 {
+		compatible = "ti,j721e-esm";
+		reg = <0x00 0x40800000 0x00 0x1000>;
+		/* Interrupt sources: mrti0, mrti1 */
+		ti,esm-pins = <104>, <105>;
+		bootph-pre-ram;
+	};
+
 	mcu_rti1: watchdog@...10000 {
 		compatible = "ti,j7-rti-wdt";
 		reg = <0x0 0x40610000 0x0 0x100>;
-- 
2.46.0