[EXTERNAL] Re: [PATCH 1/5] arm64: dts: ti: k3-j7200: Add general purpose timers

Kumar, Udit u-kumar1 at ti.com
Thu Apr 27 03:09:00 PDT 2023


Hi Tony

On 4/27/2023 1:30 PM, Tony Lindgren wrote:
> Hi,
>
> * Udit Kumar <u-kumar1 at ti.com> [230426 10:38]:
>> There are 20 general purpose timers on j7200 that can be used for things
>> like PWM using pwm-omap-dmtimer driver. There are also additional ten
>> timers in the MCU domain.
> ...
>
> ....
> Oh so also the MCU timers now have interrupts, nice. Can you please check
> if what we have in the comments the other SoCs in the dtsi files for MCU
> timers not having routable interrupts is correct?

checked for AM65 and AM64, looks these SOC follow different IT map wrt J7200

On J7200 reading TRM

https://www.ti.com/lit/pdf/spruiu1

Section 9.4.3.1.2 GIC500 SPI Interrupt Map, table Table 9-109.

MCU_TIMER0_INTR_PEND_0 (848) to MCU_TIMER9_INTR_PEND_0 (857)

looks to be available for A core.

> Also, should the MCU timers be still tagged with status = "reserved"?
Will mark status as  reserved
> See the comments in k3-am62-mcu.dtsi for example for both questions.
>
> Regards,
>
> Tony



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