AM625: AM625: not able to wakeup from Deep sleep

Hi Ishan,

Which SDK version are you using?

Can you clarify what you are trying to do with devmem2 0x04084040 b 0x28254007?

Based on the PMIC signal voltage being high, the device may not be in deep sleep rather it hangs prior to that point. I don't think the wake-up source is an issue.

To get further in debugging this, we would need to trace the transactions in/out of the DM firmware. Can you follow this E2E FAQ?: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1323581/faq-processor-sdk-am62x-how-can-we-debug-deep-sleep-on-am62x-using-sysfw-trace

Best Regards,
Anshu

Hey Anshu, 

Thanks the reply.

with devmem2 0x04084040 b 0x28254007, trying to set 29th(WKUP_EN) and 18th(RXactive) bit of register MCU_PADCFG_CTRL0_CFG0_PADCONFIG16




I'll get back to you once i get DM firmware logs.


Thanks and regards,
Ishan

Hi Ishan,

Thanks for the update. Can you also share which SDK version you are using? This would be helpful to know for debugging.

Best Regards,

Anshu

Hi Anshu, 

We are using version SDK 9.0.


Thanks and regards,
Ishan

Hi Ishan,

Thank you. We can examine the logs when available. Let me know if you have any questions in the mean time.

Best Regards,

Anshu

Hey Anshu,

Thanks for the replay,

There was some problematic in tfa/u-boot.

Now we are getting signal low on Deep Sleep on pin PMIC_LPM_EN0 (B7). and not getting any error while going into sleep, So SOC going into sleep properly.


Now for wake-up, we are using pin C6 (MCU_GPIO0_11). We have external pull-up on this pin.

device tree entry for wake-up source given below.

/{
 mcu_gpio_key {
                compatible = "gpio-keys";
                autorepeat;
                pinctrl-names = "default";
                pinctrl-0 = <&wake_mcugpio1_pins_default>;
                interrupt-parent = <&mcu_gpio0>;
                interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
                switch {
                        label = "MCUGPIO";
                        linux,code = <143>;
                        gpios = <&mcu_gpio0 11 GPIO_ACTIVE_HIGH>;
                        wakeup-source;
                };
        };
};


&mcu_pmx0{
wake_mcugpio1_pins_default: wake-mcugpio1-pins-default {
                pinctrl-single,pins = <
                        AM62X_MCU_IOPAD(0x002C, PIN_INPUT, 7) /* (C6) MCU_GPIO0_11 */
                >;
        };

};

&mcu_gpio_intr {
        status = "okay";
};

&mcu_gpio0 {
        status = "okay";
};

root@sm2s-am6254:~# 
root@sm2s-am6254:~# 
root@sm2s-am6254:~# 
root@sm2s-am6254:~# cat /sys/class/remoteproc/remoteproc0/state
running
root@sm2s-am6254:~# devmem2 0x43018080 b 0x15
/dev/mem opened.
Memory mapped at address 0xffff9a809000.
Read at address  0x43018080 (0xffff9a809080): 0x10
Write at address 0x43018080 (0xffff9a809080): 0x15, readback 0x15
root@sm2s-am6254:~# 
root@sm2s-am6254:~# devmem2 0x0408402C             
/dev/mem opened.
Memory mapped at address 0xffff8e526000.
Read at address  0x0408402C (0xffff8e52602c): 0x00050007
root@sm2s-am6254:~# 
root@sm2s-am6254:~# echo mem > /sys/power/state
[ 1368.906580] PM: suspend entry (deep)
[ 1368.913058] Filesystems sync: 0.002 seconds
[ 1368.937440] remoteproc remoteproc0: stopped remote processor 5000000.m4fss
[ 1368.944764] Freezing user space processes
[ 1368.950779] Freezing user space processes completed (elapsed 0.001 seconds)
[ 1368.957800] OOM killer disabled.
[ 1368.961018] Freezing remaining freezable tasks
[ 1368.966885] Freezing remaining freezable tasks completed (elapsed 0.001 seconds)
[ 1368.974296] printk: Suspending console(s) (use no_console_suspend to debug)

U-Boot SPL 2023.04-g379572d4a1-dirty (Mar 01 2024 - 18:07:56 +0530)
SYSFW ABI: 3.1 (firmware rev 0x0009 '9.0.5--v09.00.05 (Kool Koala)')
SPL initial stack usage: 13376 bytes
Trying to boot from MMC2
Warning: Detected image signing certificate on GP device. Skipping certificate to prevent boot failure. This will fail if the image was also encrypted
Warning: Detected image signing certificate on GP device. Skipping certificate to prevent boot failure. This will fail if the image was also encrypted
Warning: Detected image signing certificate on GP device. Skipping certificate to prevent boot failure. This will fail if the image was also encrypted
Warning: Detected image signing certificate on GP device. Skipping certificate to prevent boot failure. This will fail if the image was also encrypted
Warning: Detected image signing certificate on GP device. Skipping certificate to prevent boot failure. This will fail if the image was also encrypted
Loading Environment from MMC... *** Warning - No MMC card found, using default environment

Starting ATF on ARM64 core...

Hi Ishan,

I am in trainings this week so responses will be delayed. I will review this as soon as I can.

Best Regards,

Anshu

Hi Ishan,

We've noticed this occur when there is unexpected behavior from the PMIC. Will try to get confirmation from the Software Dev team about it.

Thanks,

Anshu

Hi Ishan,

Just to confirm, have you re-enabled the IO_ISOLATION in the ti_sci.c driver? In the debugging guide, we instructed to use a hack.

Best Regards,

Anshu