linux-kernel - [PATCH v2 07/33] arm64: dts: ti: k3-am62a: Enable remote processors at board level

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Message-ID: <20250823160901.2177841-8-b-padhi@ti.com>
Date: Sat, 23 Aug 2025 21:38:35 +0530
From: Beleswar Padhi <b-padhi@...com>
To: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>
CC: <afd@...com>, <u-kumar1@...com>, <hnagalla@...com>, <jm@...com>,
        <b-padhi@...com>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v2 07/33] arm64: dts: ti: k3-am62a: Enable remote processors at board level

Remote Processors defined in top-level AM62A SoC dtsi files are
incomplete without the memory carveouts and mailbox assignments which
are only known at board integration level.

Therefore, disable the remote processors at SoC level and enable them at
board level where above information is available.

Signed-off-by: Beleswar Padhi <b-padhi@...com>
---
v2: Changelog:
1. Re-ordered patch from [PATCH 24/33] to [PATCH v2 07/33].

Link to v1:
https://lore.kernel.org/all/20250814223839.3256046-25-b-padhi@ti.com/

 arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi         | 1 +
 arch/arm64/boot/dts/ti/k3-am62a-phycore-som.dtsi | 2 ++
 arch/arm64/boot/dts/ti/k3-am62a-wakeup.dtsi      | 1 +
 arch/arm64/boot/dts/ti/k3-am62a7-sk.dts          | 2 ++
 arch/arm64/boot/dts/ti/k3-am62d2-evm.dts         | 1 +
 5 files changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi
index ee961ced7208..d22caa7c346b 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi
@@ -197,6 +197,7 @@ mcu_r5fss0_core0: r5f@...00000 {
 			ti,sci = <&dmsc>;
 			ti,sci-dev-id = <9>;
 			ti,sci-proc-ids = <0x03 0xff>;
+			status = "disabled";
 		};
 	};
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am62a-phycore-som.dtsi b/arch/arm64/boot/dts/ti/k3-am62a-phycore-som.dtsi
index 207ca00630d1..403adfbf7dce 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62a-phycore-som.dtsi
@@ -406,6 +406,7 @@ &mcu_r5fss0_core0 {
 	mboxes = <&mailbox0_cluster2 &mbox_mcu_r5_0>;
 	memory-region = <&mcu_r5fss0_core0_dma_memory_region>,
 			<&mcu_r5fss0_core0_memory_region>;
+	status = "okay";
 };
 
 &ospi0 {
@@ -444,4 +445,5 @@ &wkup_r5fss0_core0 {
 	mboxes = <&mailbox0_cluster0  &mbox_r5_0>;
 	memory-region = <&wkup_r5fss0_core0_dma_memory_region>,
 			<&wkup_r5fss0_core0_memory_region>;
+	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am62a-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62a-wakeup.dtsi
index 9ef1c829a9df..23877dadc98d 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62a-wakeup.dtsi
@@ -127,6 +127,7 @@ wkup_r5fss0_core0: r5f@...00000 {
 			ti,sci = <&dmsc>;
 			ti,sci-dev-id = <121>;
 			ti,sci-proc-ids = <0x01 0xff>;
+			status = "disabled";
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
index bceead5e288e..03291862f07a 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
@@ -870,6 +870,7 @@ &wkup_r5fss0_core0 {
 	mboxes = <&mailbox0_cluster0>, <&mbox_r5_0>;
 	memory-region = <&wkup_r5fss0_core0_dma_memory_region>,
 			<&wkup_r5fss0_core0_memory_region>;
+	status = "okay";
 };
 
 &mcu_r5fss0 {
@@ -880,6 +881,7 @@ &mcu_r5fss0_core0 {
 	mboxes = <&mailbox0_cluster2>, <&mbox_mcu_r5_0>;
 	memory-region = <&mcu_r5fss0_core0_dma_memory_region>,
 			<&mcu_r5fss0_core0_memory_region>;
+	status = "okay";
 };
 
 &c7x_0 {
diff --git a/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts b/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
index daea18b0bc61..d45fc42b03f3 100644
--- a/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
@@ -586,6 +586,7 @@ &wkup_r5fss0_core0 {
 	mboxes = <&mailbox0_cluster0 &mbox_r5_0>;
 	memory-region = <&wkup_r5fss0_core0_dma_memory_region>,
 			<&wkup_r5fss0_core0_memory_region>;
+	status = "okay";
 	bootph-pre-ram;
 };
 
-- 
2.34.1