linux-kernel - [PATCH 1/2] arm64: dts: ti: k3-j742s2-mcu-wakeup: Override firmware-name for MCU R5F cores

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Message-ID: <20250522073426.329344-2-b-padhi@ti.com>
Date: Thu, 22 May 2025 13:04:25 +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 1/2] arm64: dts: ti: k3-j742s2-mcu-wakeup: Override firmware-name for MCU R5F cores

The J742S2 SoC reuses the common k3-j784s4-j742s2-mcu-wakeup-common.dtsi
for its MCU domain, but it does not override the firmware-name property
for its R5F cores. This causes the wrong firmware binaries to be
referenced.

Introduce a new k3-j742s2-mcu-wakeup.dtsi file to override the
firmware-name property with correct names for J742s2.

Signed-off-by: Beleswar Padhi <b-padhi@...com>
---
 .../arm64/boot/dts/ti/k3-j742s2-mcu-wakeup.dtsi | 17 +++++++++++++++++
 arch/arm64/boot/dts/ti/k3-j742s2.dtsi           |  1 +
 2 files changed, 18 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-j742s2-mcu-wakeup.dtsi

diff --git a/arch/arm64/boot/dts/ti/k3-j742s2-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j742s2-mcu-wakeup.dtsi
new file mode 100644
index 000000000000..61db2348d6a4
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j742s2-mcu-wakeup.dtsi
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Device Tree Source for J742S2 SoC Family
+ *
+ * TRM: https://www.ti.com/lit/pdf/spruje3
+ *
+ * Copyright (C) 2025 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ */
+
+&mcu_r5fss0_core0 {
+	firmware-name = "j742s2-mcu-r5f0_0-fw";
+};
+
+&mcu_r5fss0_core1 {
+	firmware-name = "j742s2-mcu-r5f0_1-fw";
+};
diff --git a/arch/arm64/boot/dts/ti/k3-j742s2.dtsi b/arch/arm64/boot/dts/ti/k3-j742s2.dtsi
index 7a72f82f56d6..d265df1abade 100644
--- a/arch/arm64/boot/dts/ti/k3-j742s2.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j742s2.dtsi
@@ -96,3 +96,4 @@ cpu3: cpu@3 {
 };
 
 #include "k3-j742s2-main.dtsi"
+#include "k3-j742s2-mcu-wakeup.dtsi"
-- 
2.34.1