linux-kernel - [PATCH v2 3/5] arm64: dts: ti: k3-j721e-main: Add the MAIN domain watchdog instances

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Message-ID: <20240412042537.666137-4-n-francis@ti.com>
Date: Fri, 12 Apr 2024 09:55:35 +0530
From: Neha Malcom Francis <n-francis@...com>
To: <robh@...nel.org>, <conor+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <vigneshr@...com>, <nm@...com>
CC: <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <kristo@...nel.org>, <u-kumar1@...com>,
        <n-francis@...com>
Subject: [PATCH v2 3/5] arm64: dts: ti: k3-j721e-main: Add the MAIN domain watchdog instances

There are 10 watchdog instances in the MAIN domain:
	* one each for the 2 A72 cores
	* one for the GPU core
	* one for the C7x core
	* one each for the 2 C66x cores
	* one each for the 4 R5F cores

Currently, the devicetree only describes watchdog instances for the A72
cores and enables them. Describe the remaining but reserve them as they
will be used by their respective firmware.

Signed-off-by: Neha Malcom Francis <n-francis@...com>
---
Changes since v1:
- watchdog label numbering changed as per TRM

 arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 93 +++++++++++++++++++++++
 1 file changed, 93 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
index c7eafbc862f9..0dd5005b34aa 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
@@ -2157,6 +2157,99 @@ watchdog1: watchdog@...0000 {
 		assigned-clock-parents = <&k3_clks 253 5>;
 	};
 
+	/*
+	 * The following RTI instances are coupled with MCU R5Fs, c7x and
+	 * GPU so keeping them reserved as these will be used by their
+	 * respective firmware
+	 */
+	watchdog15: watchdog@...0000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x22f0000 0x00 0x100>;
+		clocks = <&k3_clks 257 1>;
+		power-domains = <&k3_pds 257 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 257 1>;
+		assigned-clock-parents = <&k3_clks 257 5>;
+		/* reserved for GPU */
+		status = "reserved";
+	};
+
+	watchdog16: watchdog@...0000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x2300000 0x00 0x100>;
+		clocks = <&k3_clks 256 1>;
+		power-domains = <&k3_pds 256 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 256 1>;
+		assigned-clock-parents = <&k3_clks 256 5>;
+		/* reserved for C7X */
+		status = "reserved";
+	};
+
+	watchdog24: watchdog@...0000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x2380000 0x00 0x100>;
+		clocks = <&k3_clks 254 1>;
+		power-domains = <&k3_pds 254 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 254 1>;
+		assigned-clock-parents = <&k3_clks 254 5>;
+		/* reserved for C66X_0 */
+		status = "reserved";
+	};
+
+	watchdog25: watchdog@...0000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x2390000 0x00 0x100>;
+		clocks = <&k3_clks 255 1>;
+		power-domains = <&k3_pds 255 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 255 1>;
+		assigned-clock-parents = <&k3_clks 255 5>;
+		/* reserved for C66X_1 */
+		status = "reserved";
+	};
+
+	watchdog28: watchdog@...0000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x23c0000 0x00 0x100>;
+		clocks = <&k3_clks 258 1>;
+		power-domains = <&k3_pds 258 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 258 1>;
+		assigned-clock-parents = <&k3_clks 258 5>;
+		/* reserved for MAIN_R5F0_0 */
+		status = "reserved";
+	};
+
+	watchdog29: watchdog@...0000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x23d0000 0x00 0x100>;
+		clocks = <&k3_clks 259 1>;
+		power-domains = <&k3_pds 259 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 259 1>;
+		assigned-clock-parents = <&k3_clks 259 5>;
+		/* reserved for MAIN_R5F0_1 */
+		status = "reserved";
+	};
+
+	watchdog30: watchdog@...0000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x23e0000 0x00 0x100>;
+		clocks = <&k3_clks 260 1>;
+		power-domains = <&k3_pds 260 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 260 1>;
+		assigned-clock-parents = <&k3_clks 260 5>;
+		/* reserved for MAIN_R5F1_0 */
+		status = "reserved";
+	};
+
+	watchdog31: watchdog@...0000 {
+		compatible = "ti,j7-rti-wdt";
+		reg = <0x00 0x23f0000 0x00 0x100>;
+		clocks = <&k3_clks 261 1>;
+		power-domains = <&k3_pds 261 TI_SCI_PD_EXCLUSIVE>;
+		assigned-clocks = <&k3_clks 261 1>;
+		assigned-clock-parents = <&k3_clks 261 5>;
+		/* reserved for MAIN_R5F1_1 */
+		status = "reserved";
+	};
+
 	main_r5fss0: r5fss@...0000 {
 		compatible = "ti,j721e-r5fss";
 		ti,cluster-mode = <1>;
-- 
2.34.1