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From: Judith Mendez <jm@ti.com>
To: Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>
Cc: Tero Kristo <kristo@kernel.org>, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	Hari Nagalla <hnagalla@ti.com>, Beleswar Prasad <b-padhi@ti.com>,
	Andrew Davis <afd@ti.com>,
	Markus Schneider-Pargmann <msp@baylibre.com>,
	Devarsh Thakkar <devarsht@lewv0571a.ent.ti.com>
Subject: [PATCH v7 11/11] arm64: dts: ti: k3-am64: Reserve timers used by MCU FW
Date: Tue, 15 Apr 2025 10:31:47 -0500	[thread overview]
Message-ID: <20250415153147.1844076-12-jm@ti.com> (raw)
In-Reply-To: <20250415153147.1844076-1-jm@ti.com>

From: Hari Nagalla <hnagalla@ti.com>

AM64x device has 4 R5F cores in the main domain. TI MCU firmware uses
main domain timers as tick timers in these firmwares. Hence keep them
as reserved in the Linux device tree.

Signed-off-by: Hari Nagalla <hnagalla@ti.com>
Signed-off-by: Judith Mendez <jm@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am642-evm.dts | 20 ++++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-am642-sk.dts  | 20 ++++++++++++++++++++
 2 files changed, 40 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index f8ec40523254b..5623ab354a1d5 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -796,6 +796,26 @@ &mcu_m4fss {
 	status = "okay";
 };
 
+/* 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";
+};
+
 &serdes_ln_ctrl {
 	idle-states = <AM64_SERDES0_LANE0_PCIE0>;
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 33e421ec18abb..1deaa0be0085c 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -710,6 +710,26 @@ &mcu_m4fss {
 	status = "okay";
 };
 
+/* 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";
+};
+
 &ecap0 {
 	status = "okay";
 	/* PWM is available on Pin 1 of header J3 */
-- 
2.49.0


  parent reply	other threads:[~2025-04-15 15:32 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-15 15:31 [PATCH v7 00/11] Add R5F and C7xv device nodes Judith Mendez
2025-04-15 15:31 ` [PATCH v7 01/11] arm64: dts: ti: k3-am62: Add ATCM and BTCM cbass ranges Judith Mendez
2025-04-15 16:34   ` Andrew Davis
2025-04-15 15:31 ` [PATCH v7 02/11] arm64: dts: ti: k3-am62-wakeup: Add wakeup R5F node Judith Mendez
2025-04-15 15:31 ` [PATCH v7 03/11] arm64: dts: ti: k3-am62a-mcu: Add R5F remote proc node Judith Mendez
2025-04-15 15:31 ` [PATCH v7 04/11] arm64: dts: ti: k3-am62a-wakeup: Add R5F device node Judith Mendez
2025-04-15 15:31 ` [PATCH v7 05/11] arm64: dts: ti: k3-am62a-main: Add C7xv " Judith Mendez
2025-04-15 15:31 ` [PATCH v7 06/11] arm64: dts: ti: k3-am62a7-sk: Enable IPC with remote processors Judith Mendez
2025-04-19 15:04   ` Bryan Brattlof
2025-04-21 11:40     ` Nishanth Menon
2025-04-21 16:26       ` Bryan Brattlof
2025-04-21 19:05         ` Judith Mendez
2025-04-21 20:28           ` Andrew Davis
2025-04-21 21:49             ` Bryan Brattlof
2025-05-02 11:53   ` Nishanth Menon
2025-05-02 21:09     ` Judith Mendez
2025-04-15 15:31 ` [PATCH v7 07/11] arm64: dts: ti: k3-am62p5-sk: " Judith Mendez
2025-04-28 16:22   ` Andrew Davis
2025-04-15 15:31 ` [PATCH v7 08/11] arm64: dts: ti: k3-am62x-sk-common: " Judith Mendez
2025-04-28 16:24   ` Andrew Davis
2025-04-15 15:31 ` [PATCH v7 09/11] arm64: dts: ti: k3-am62a7-sk: Reserve main_timer2 for C7x DSP Judith Mendez
2025-04-28 16:28   ` Andrew Davis
2025-04-15 15:31 ` [PATCH v7 10/11] arm64: dts: ti: k3-am62a7-sk: Reserve main_rti4 " Judith Mendez
2025-04-28 16:29   ` Andrew Davis
2025-04-15 15:31 ` Judith Mendez [this message]
2025-04-28 16:29   ` [PATCH v7 11/11] arm64: dts: ti: k3-am64: Reserve timers used by MCU FW Andrew Davis

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