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arm64: dts: ti: k3-am64: Reserve timers used by MCU FW

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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>
Reviewed-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20250502220325.3230653-12-jm@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>
This commit is contained in:
Hari Nagalla 2025-05-02 17:03:25 -05:00 committed by Nishanth Menon
parent b4ec77305c
commit e4b55d8502
2 changed files with 40 additions and 0 deletions
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20
arch/arm64/boot/dts/ti/k3-am642-evm.dts
View File

@ -795,6 +795,26 @@ &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>;
};

20
arch/arm64/boot/dts/ti/k3-am642-sk.dts
View File

@ -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 */