linux-kernel - [PATCH v3 3/5] arm64: dts: ti: k3-j721s2: Change timer nodes status to reserved

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Message-ID: <20240816073908.2343650-4-b-padhi@ti.com>
Date: Fri, 16 Aug 2024 13:09:06 +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: <u-kumar1@...com>, <tony@...mide.com>, <bb@...com>, <d-gole@...com>,
        <afd@...com>, <hnagalla@...com>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 3/5] arm64: dts: ti: k3-j721s2: Change timer nodes status to reserved

The remoteproc firmware like of R5F and DSPs in the MAIN voltage domain
use timers. Therefore, change the status of the timer nodes to
"reserved" to avoid any clash. Usage is described as below:

	+===================+=============+
	|  Remoteproc node  | Timer Node  |
	+===================+=============+
	| main_r5fss0_core0 | main_timer2 |
	+-------------------+-------------+
	| main_r5fss0_core1 | main_timer3 |
	+-------------------+-------------+
	| main_r5fss1_core0 | main_timer4 |
	+-------------------+-------------+
	| main_r5fss1_core1 | main_timer5 |
	+-------------------+-------------+
	| c71_0             | main_timer0 |
	+-------------------+-------------+
	| c71_1             | main_timer1 |
	+-------------------+-------------+

Fixes: 835d04422f9d ("arm64: dts: ti: k3-j721s2: Add general purpose timers")
Signed-off-by: Beleswar Padhi <b-padhi@...com>
---
 .../dts/ti/k3-j721s2-common-proc-board.dts    | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
index c5a0b7cbb14f..2903e15b8d3b 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
@@ -525,3 +525,28 @@ &main_mcan5 {
 	pinctrl-0 = <&main_mcan5_pins_default>;
 	phys = <&transceiver4>;
 };
+
+/* Timers are used by Remoteproc firmware */
+&main_timer0 {
+	status = "reserved";
+};
+
+&main_timer1 {
+	status = "reserved";
+};
+
+&main_timer2 {
+	status = "reserved";
+};
+
+&main_timer3 {
+	status = "reserved";
+};
+
+&main_timer4 {
+	status = "reserved";
+};
+
+&main_timer5 {
+	status = "reserved";
+};
-- 
2.34.1