i.MX ProcessorsのトピックRe: Regarding timer on IMX8MM-LPDDR4

Regarding timer on IMX8MM-LPDDR4

avikum — Wed, 09 Aug 2023 13:26:01 GMT

Hi,

According to "i.MX Linux Reference Manual" , i.MX 8M Mini usages system counter timer (driver/clocksource/timer-imx-sysctr.c ), but I couldn't fine any APIs which I can integrate in our driver , can you let me know the which system counter timer APIs (pls do share the file path) we can use to enable the timer (one shot and periodic timer)? please do share the developer document regarding timer, if any.

Re: Regarding timer on IMX8MM-LPDDR4

Rita_Wang — Fri, 11 Aug 2023 09:37:03 GMT

Which version BSP are you using? I will help confirm.

Re: Regarding timer on IMX8MM-LPDDR4

avikum — Wed, 16 Aug 2023 06:15:00 GMT

we are using 5.15.71 kernel.

Re: Regarding timer on IMX8MM-LPDDR4

avikum — Wed, 16 Aug 2023 07:36:05 GMT

Re: Regarding timer on IMX8MM-LPDDR4

avikum — Wed, 16 Aug 2023 07:40:42 GMT

Released notes attached for 5.15.71 kernel and BSP version.

Re: Regarding timer on IMX8MM-LPDDR4

avikum — Tue, 22 Aug 2023 04:29:17 GMT

Hi, Can you please update on this ?

Re: Regarding timer on IMX8MM-LPDDR4

Rita_Wang — Thu, 24 Aug 2023 08:24:45 GMT

The timers on this chip include:
• One local generic timer integrated into each Cortex-A53 CPU
• Global system counter with timer bus interface to Cortex-A53 MPCore generic
timers
• One local system timer (SysTick) integrated into the Cortex-M4 CPU
• Six general purpose timer (GPT) modules
• Three watchdog timer (WDOG) modules
• Four pulse width modulation (PWM) modules

You can see in our RM