[PATCH v3 13/33] arm64: dts: ti: k3-j721e-beagleboneai64: Add missing cfg for TI IPC FW

Beleswar Padhi
2025-09-05T06:10:16Z

The TI IPC Firmwares running on J721E SoCs use certain MAIN domain
timers as tick. Reserve those at board level DT to avoid remote
processor crashes. This config aligns with other J721E boards and can
be refactored out later.

Signed-off-by: Beleswar Padhi <b-padhi@ti.com>
---
Cc: Robert Nelson <robertcnelson@gmail.com>
Requesting for review/test of this patch.

v3: Changelog:
1. None

Link to v2:
https://lore.kernel.org/all/20250823160901.2177841-14-b-padhi@ti.com/

v2: Changelog:
1. Split [PATCH 06/33] into [PATCH v2 13/33] and [PATCH v2 22/33].
This patch only reserves the timer nodes used by rproc firmware.

Link to v1:
https://lore.kernel.org/all/20250814223839.3256046-7-b-padhi@ti.com/

.../boot/dts/ti/k3-j721e-beagleboneai64.dts | 29 +++++++++++++++++++
1 file changed, 29 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
index 0d1a313a7d10..2ff4cdf1300f 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
@@ -935,6 +935,35 @@ mbox_c71_0: mbox-c71-0 {
};
};

+/* Timers are used by Remoteproc firmware */
+&main_timer0 {
+ status = "reserved";
+};
+
+&main_timer1 {
+ status = "reserved";
+};
+
+&main_timer2 {
+ status = "reserved";
+};
+
+&main_timer12 {
+ status = "reserved";
+};
+
+&main_timer13 {
+ status = "reserved";
+};
+
+&main_timer14 {
+ status = "reserved";
+};
+
+&main_timer15 {
+ status = "reserved";
+};
+
&mcu_r5fss0 {
status = "okay";
};
--
2.34.1