linux-kernel - [PATCH v4 19/34] arm64: dts: ti: k3-am64-phycore-som: Add missing cfg for TI IPC Firmware

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Message-ID: <20250908142826.1828676-20-b-padhi@ti.com>
Date: Mon, 8 Sep 2025 19:58:11 +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>,
        <d-gole@...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 v4 19/34] 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>
Tested-by: Wadim Egorov <w.egorov@...tec.de>
---
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.

v4: Changelog:
1. None

Link to v3:
https://lore.kernel.org/all/20250905051846.1189612-19-b-padhi@ti.com/

v3: Changelog:
1. Carried T/B tag.

Link to v2:
https://lore.kernel.org/all/20250823160901.2177841-19-b-padhi@ti.com/

v2: Changelog:
1. Re-ordered patch from [PATCH 28/33] to [PATCH v2 18/33].

Link to v1:
https://lore.kernel.org/all/20250814223839.3256046-29-b-padhi@ti.com/
 .../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 ba425b125d63..5e0c82960a6c 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