linux-kernel - [PATCH 28/33] arm64: dts: ti: k3-am64-phycore-som: Add missing cfg for TI IPC Firmware

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Message-ID: <20250814223839.3256046-29-b-padhi@ti.com>
Date: Fri, 15 Aug 2025 04:08:34 +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>,
        Wadim
 Egorov <w.egorov@...tec.de>, Matt McKee <mmckee@...tec.com>,
        Garrett Giordano
	<ggiordano@...tec.com>,
        Nathan Morrisson <nmorrisson@...tec.com>, John Ma
	<jma@...tec.com>,
        Logan Bristol <logan.bristol@...xas.edu>
Subject: [PATCH 28/33] arm64: dts: ti: k3-am64-phycore-som: Add missing cfg for TI IPC Firmware

The k3-am64-phycore SoM enables all R5F and M4F remote processors.
Reserve the MAIN domain timers that are used by R5F remote
processors for ticks to avoid rproc crashes. This config aligns with
other AM64 boards and can be refactored out later.

Signed-off-by: Beleswar Padhi <b-padhi@...com>
---
Cc: Wadim Egorov <w.egorov@...tec.de>
Cc: Matt McKee <mmckee@...tec.com>
Cc: Garrett Giordano <ggiordano@...tec.com>
Cc: Nathan Morrisson <nmorrisson@...tec.com>
Cc: John Ma <jma@...tec.com>
Cc: Logan Bristol <logan.bristol@...xas.edu> 
Requesting for review/test of this patch.

 .../boot/dts/ti/k3-am64-phycore-som.dtsi      | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi b/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi
index 03c46d74ebb5..1efd547b2ba6 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi
@@ -275,6 +275,30 @@ mbox_m4_0: mbox-m4-0 {
 	};
 };
 
+/* main_timer8 is used by r5f0-0 */
+&main_timer8 {
+	status = "reserved";
+};
+
+/* main_timer9 is used by r5f0-1 */
+&main_timer9 {
+	status = "reserved";
+};
+
+/* main_timer10 is used by r5f1-0 */
+&main_timer10 {
+	status = "reserved";
+};
+
+/* main_timer11 is used by r5f1-1 */
+&main_timer11 {
+	status = "reserved";
+};
+
+&main_r5fss0 {
+	status = "okay";
+};
+
 &main_i2c0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_i2c0_pins_default>;
-- 
2.34.1