linux-kernel - [PATCH v4 4/7] arm64: dts: ti: k3-j721s2-som-p0: Change timer nodes status to reserved

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Message-ID: <20240826104821.1516344-5-b-padhi@ti.com>
Date: Mon, 26 Aug 2024 16:18:17 +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 v4 4/7] arm64: dts: ti: k3-j721s2-som-p0: 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>
---
 arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi | 25 ++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
index 92109b88e257..89252e4a5f1b 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
@@ -524,6 +524,31 @@ &main_r5fss1 {
 	ti,cluster-mode = <0>;
 };
 
+/* 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_r5fss0_core0 {
 	mboxes = <&mailbox0_cluster1 &mbox_main_r5fss0_core0>;
 	memory-region = <&main_r5fss0_core0_dma_memory_region>,
-- 
2.34.1