linux-kernel - [PATCH v2 4/5] arm64: dts: ti: k3-j784s4: Change timer nodes status to reserved

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Message-ID: <20240814104151.2038457-5-b-padhi@ti.com>
Date: Wed, 14 Aug 2024 16:11:50 +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>, <g-vlaev@...com>, <afd@...com>,
        <hnagalla@...com>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 4/5] arm64: dts: ti: k3-j784s4: 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_timer4 |
	+-------------------+-------------+
	| main_r5fss0_core1 | main_timer5 |
	+-------------------+-------------+
	| main_r5fss1_core0 | main_timer6 |
	+-------------------+-------------+
	| main_r5fss1_core1 | main_timer7 |
	+-------------------+-------------+
	| main_r5fss2_core0 | main_timer8 |
	+-------------------+-------------+
	| main_r5fss2_core1 | main_timer9 |
	+-------------------+-------------+
	| c71_0             | main_timer0 |
	+-------------------+-------------+
	| c71_1             | main_timer1 |
	+-------------------+-------------+
	| c71_2             | main_timer2 |
	+-------------------+-------------+
	| c71_3             | main_timer3 |
	+-------------------+-------------+

This change is already incorporated for timer nodes in the MCU voltage
domain.

Fixes: 833377cf858b ("arm64: dts: ti: k3-j784s4: Add general purpose timers")
Signed-off-by: Beleswar Padhi <b-padhi@...com>
---
 arch/arm64/boot/dts/ti/k3-j784s4-evm.dts | 41 ++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
index ffa38f41679d..5e8bea3a5d82 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
@@ -1050,6 +1050,47 @@ &main_cpsw1_port1 {
 	status = "okay";
 };
 
+/* 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";
+};
+
+&main_timer6 {
+	status = "reserved";
+};
+
+&main_timer7 {
+	status = "reserved";
+};
+
+&main_timer8 {
+	status = "reserved";
+};
+
+&main_timer9 {
+	status = "reserved";
+};
+
 &mailbox0_cluster0 {
 	status = "okay";
 	interrupts = <436>;
-- 
2.34.1