We have encountered a problem related to the RTC driver (nvvrs-pseq-rtc
). The issue doesn’t happen consistently, and we do not have clear steps on how to reproduce, but we have encountered it several times.
The issue causes a kernel thread to be blocked on i2c-call, it seems that it is trying to acquire a mutex but never actually succeeds. We added some trace and debugged the issue with following observations:
- When everything works normally, i2c-adapter gets only calls from our thermal zone temperature readings (to the slave address 0x4c).
- When the thread doing the temperature reading gets stuck, dmesg alerts from blocking. It also shows that i2c-adapter is flooded with calls to the power sequencer (to the slave address 0x3c)
- Dmesg shows that the power sequencer driver calls nvvrs_pseq_irq_clear, but it doesn’t seem to get to part where it clears the interrupts (no i2c write seen on the call trace). At the same time dmesg shows that nvvrs_rtc_irq_handler gets called. It disables the alarm and succeeds in i2c writes, but the irq handler gets called repeatedly regardless.
- When the stuck was on, we also tried to read the thermal zone temperature from terminal (
cat /sys/class/thermal/thermal_zone10/temp
). This caused terminal to hang.
Kernel trace from blocking alert:
11:00:34 kernel: INFO: task xxxxxxxxxx:1069 blocked for more than 120 seconds.
11:00:34 kernel: Not tainted 5.10.192+ #225
11:00:34 kernel: “echo 0 > /proc/sys/kernel/hung_task_timeout_secs” disables this message.
11:00:34 kernel: task: xxxxxxxxxx state:D stack: 0 pid: 1069 ppid: 1 flags:0x00000000
11:00:34 kernel: Call trace:
11:00:34 kernel: __switch_to+0xc8/0x120
11:00:34 kernel: __schedule+0x318/0x980
11:00:34 kernel: schedule+0x78/0x108
11:00:34 kernel: __rt_mutex_slowlock+0x64/0x120
11:00:34 kernel: rt_mutex_slowlock+0xbc/0x1a0
11:00:34 kernel: rt_mutex_lock+0x84/0x90
11:00:34 kernel: i2c_adapter_lock_bus+0x24/0x30
11:00:34 kernel: i2c_smbus_xfer+0x64/0x120
11:00:34 kernel: i2c_smbus_read_byte_data+0x54/0x88
11:00:34 kernel: nct1008_read_reg+0x48/0xa0 [nct1008]
11:00:34 kernel: nct1008_get_temp_common+0x3c/0x120 [nct1008]
11:00:34 kernel: nct1008_loc_get_temp_as_sensor+0x30/0x40 [nct1008]
11:00:34 kernel: of_thermal_get_temp+0x40/0x58
11:00:34 kernel: thermal_zone_get_temp+0x78/0x158
11:00:34 kernel: temp_show+0x40/0x88
11:00:34 kernel: dev_attr_show+0x40/0x80
11:00:34 kernel: sysfs_kf_seq_show+0x90/0x130
11:00:34 kernel: kernfs_seq_show+0x48/0x58
11:00:34 kernel: seq_read_iter+0x1d4/0x490
11:00:34 kernel: kernfs_fop_read_iter+0x154/0x1c8
11:00:34 kernel: new_sync_read+0xfc/0x198
11:00:34 kernel: vfs_read+0x130/0x1b8
11:00:34 kernel: ksys_read+0x7c/0x108
11:00:34 kernel: __arm64_sys_read+0x28/0x38
11:00:34 kernel: el0_svc_common.constprop.0+0x80/0x1c8
11:00:34 kernel: do_el0_svc+0x38/0xb8
11:00:34 kernel: el0_svc+0x1c/0x28
11:00:34 kernel: el0_sync_handler+0xa8/0xb0
11:00:34 kernel: el0_sync+0x16c/0x180
Kernel trace snippet from flooding irqs. This sequence seems to be repeating:
[ 6889.487280] i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.487282] i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.487284] CPU: 0 PID: 174 Comm: irq/254-nvvrs-p Not tainted 5.10.192+ #29
[ 6889.487285] Hardware name: NVIDIA Jetson AGX Orin Developer Kit/Jetson, BIOS 202210.4-90bcc21 06/06/2024
[ 6889.487288] Call trace:
[ 6889.487290] dump_backtrace+0x0/0x1e0
[ 6889.487294] show_stack+0x30/0x40
[ 6889.487299] dump_stack+0xf0/0x130
[ 6889.487303] i2c_smbus_xfer+0x1ac/0x270
[ 6889.487305] i2c_smbus_read_byte_data+0x54/0x88
[ 6889.487309] nvvrs_pseq_irq_clear+0x6c/0x140
[ 6889.487311] regmap_irq_thread+0x37c/0x5c8
[ 6889.487314] irq_thread_fn+0x34/0xb0
[ 6889.487320] irq_thread+0x16c/0x2e0
[ 6889.487324] kthread+0x148/0x168
[ 6889.487325] ret_from_fork+0x10/0x18
[ 6889.487328] i2c_lock_bus: i2c-4 entry
[ 6889.487329] i2c_lock_bus: i2c-4 exit
[ 6889.487330] __i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.487333] __i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.487592] __i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.487595] i2c_unlock_bus: i2c-4 entry
[ 6889.487597] i2c_unlock_bus: i2c-4 exit
[ 6889.487600] i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.487602] i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.487606] i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.487610] CPU: 0 PID: 174 Comm: irq/254-nvvrs-p Not tainted 5.10.192+ #29
[ 6889.487611] Hardware name: NVIDIA Jetson AGX Orin Developer Kit/Jetson, BIOS 202210.4-90bcc21 06/06/2024
[ 6889.487612] Call trace:
[ 6889.487615] dump_backtrace+0x0/0x1e0
[ 6889.487618] show_stack+0x30/0x40
[ 6889.487622] dump_stack+0xf0/0x130
[ 6889.487627] i2c_smbus_xfer+0x1ac/0x270
[ 6889.487629] i2c_smbus_read_byte_data+0x54/0x88
[ 6889.487633] nvvrs_pseq_irq_clear+0x6c/0x140
[ 6889.487635] regmap_irq_thread+0x37c/0x5c8
[ 6889.487639] irq_thread_fn+0x34/0xb0
[ 6889.487644] irq_thread+0x16c/0x2e0
[ 6889.487648] kthread+0x148/0x168
[ 6889.487650] ret_from_fork+0x10/0x18
[ 6889.487652] i2c_lock_bus: i2c-4 entry
[ 6889.487654] i2c_lock_bus: i2c-4 exit
[ 6889.487655] __i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.487657] __i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.487923] __i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.487926] i2c_unlock_bus: i2c-4 entry
[ 6889.487928] i2c_unlock_bus: i2c-4 exit
[ 6889.487931] i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.487932] i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.487934] i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.487936] CPU: 0 PID: 174 Comm: irq/254-nvvrs-p Not tainted 5.10.192+ #29
[ 6889.487938] Hardware name: NVIDIA Jetson AGX Orin Developer Kit/Jetson, BIOS 202210.4-90bcc21 06/06/2024
[ 6889.487940] Call trace:
[ 6889.487944] dump_backtrace+0x0/0x1e0
[ 6889.487949] show_stack+0x30/0x40
[ 6889.487951] dump_stack+0xf0/0x130
[ 6889.487955] i2c_smbus_xfer+0x1ac/0x270
[ 6889.487957] i2c_smbus_read_byte_data+0x54/0x88
[ 6889.487961] nvvrs_pseq_irq_clear+0x6c/0x140
[ 6889.487966] regmap_irq_thread+0x37c/0x5c8
[ 6889.487973] irq_thread_fn+0x34/0xb0
[ 6889.487975] irq_thread+0x16c/0x2e0
[ 6889.487979] kthread+0x148/0x168
[ 6889.487981] ret_from_fork+0x10/0x18
[ 6889.487984] i2c_lock_bus: i2c-4 entry
[ 6889.487987] i2c_lock_bus: i2c-4 exit
[ 6889.487990] __i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.487992] __i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.488252] __i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.488256] i2c_unlock_bus: i2c-4 entry
[ 6889.488261] i2c_unlock_bus: i2c-4 exit
[ 6889.488262] i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.488267] i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.488268] i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.488270] CPU: 0 PID: 174 Comm: irq/254-nvvrs-p Not tainted 5.10.192+ #29
[ 6889.488271] Hardware name: NVIDIA Jetson AGX Orin Developer Kit/Jetson, BIOS 202210.4-90bcc21 06/06/2024
[ 6889.488274] Call trace:
[ 6889.488278] dump_backtrace+0x0/0x1e0
[ 6889.488282] show_stack+0x30/0x40
[ 6889.488283] dump_stack+0xf0/0x130
[ 6889.488286] i2c_smbus_xfer+0x1ac/0x270
[ 6889.488289] i2c_smbus_read_byte_data+0x54/0x88
[ 6889.488291] nvvrs_update_bits.isra.0+0x40/0xc0
[ 6889.488294] nvvrs_rtc_disable_alarm+0x5c/0x128
[ 6889.488298] nvvrs_rtc_irq_handler+0x24/0x60
[ 6889.488299] handle_nested_irq+0xc8/0x140
[ 6889.488301] regmap_irq_thread+0x34c/0x5c8
[ 6889.488305] irq_thread_fn+0x34/0xb0
[ 6889.488307] irq_thread+0x16c/0x2e0
[ 6889.488309] kthread+0x148/0x168
[ 6889.488315] ret_from_fork+0x10/0x18
[ 6889.488316] i2c_lock_bus: i2c-4 entry
[ 6889.488318] i2c_lock_bus: i2c-4 exit
[ 6889.488320] __i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.488322] __i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.488577] __i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.488580] i2c_unlock_bus: i2c-4 entry
[ 6889.488585] i2c_unlock_bus: i2c-4 exit
[ 6889.488586] i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.488588] i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.488589] i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.488591] CPU: 0 PID: 174 Comm: irq/254-nvvrs-p Not tainted 5.10.192+ #29
[ 6889.488593] Hardware name: NVIDIA Jetson AGX Orin Developer Kit/Jetson, BIOS 202210.4-90bcc21 06/06/2024
[ 6889.488594] Call trace:
[ 6889.488597] dump_backtrace+0x0/0x1e0
[ 6889.488602] show_stack+0x30/0x40
[ 6889.488606] dump_stack+0xf0/0x130
[ 6889.488608] i2c_smbus_xfer+0x1ac/0x270
[ 6889.488610] i2c_smbus_write_byte_data+0x58/0x80
[ 6889.488613] nvvrs_update_bits.isra.0+0x64/0xc0
[ 6889.488615] nvvrs_rtc_disable_alarm+0x5c/0x128
[ 6889.488617] nvvrs_rtc_irq_handler+0x24/0x60
[ 6889.488618] handle_nested_irq+0xc8/0x140
[ 6889.488623] regmap_irq_thread+0x34c/0x5c8
[ 6889.488628] irq_thread_fn+0x34/0xb0
[ 6889.488629] irq_thread+0x16c/0x2e0
[ 6889.488632] kthread+0x148/0x168
[ 6889.488635] ret_from_fork+0x10/0x18
[ 6889.488636] i2c_lock_bus: i2c-4 entry
[ 6889.488637] i2c_lock_bus: i2c-4 exit
[ 6889.488638] __i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.488642] __i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.488871] __i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.488872] i2c_unlock_bus: i2c-4 entry
[ 6889.488873] i2c_unlock_bus: i2c-4 exit
[ 6889.488874] i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.488876] i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.488878] i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.488879] CPU: 0 PID: 174 Comm: irq/254-nvvrs-p Not tainted 5.10.192+ #29
[ 6889.488881] Hardware name: NVIDIA Jetson AGX Orin Developer Kit/Jetson, BIOS 202210.4-90bcc21 06/06/2024
[ 6889.488884] Call trace:
[ 6889.488889] dump_backtrace+0x0/0x1e0
[ 6889.488891] show_stack+0x30/0x40
[ 6889.488893] dump_stack+0xf0/0x130
[ 6889.488896] i2c_smbus_xfer+0x1ac/0x270
[ 6889.488899] i2c_smbus_read_byte_data+0x54/0x88
[ 6889.488900] nvvrs_update_bits.isra.0+0x40/0xc0
[ 6889.488902] nvvrs_rtc_disable_alarm+0x84/0x128
[ 6889.488908] nvvrs_rtc_irq_handler+0x24/0x60
[ 6889.488909] handle_nested_irq+0xc8/0x140
[ 6889.488913] regmap_irq_thread+0x34c/0x5c8
[ 6889.488915] irq_thread_fn+0x34/0xb0
[ 6889.488917] irq_thread+0x16c/0x2e0
[ 6889.488920] kthread+0x148/0x168
[ 6889.488922] ret_from_fork+0x10/0x18
[ 6889.488925] i2c_lock_bus: i2c-4 entry
[ 6889.488929] i2c_lock_bus: i2c-4 exit
[ 6889.488930] __i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.488931] __i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.489190] __i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.489191] i2c_unlock_bus: i2c-4 entry
[ 6889.489193] i2c_unlock_bus: i2c-4 exit
[ 6889.489194] i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.489196] i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.489197] i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.489198] CPU: 0 PID: 174 Comm: irq/254-nvvrs-p Not tainted 5.10.192+ #29
[ 6889.489201] Hardware name: NVIDIA Jetson AGX Orin Developer Kit/Jetson, BIOS 202210.4-90bcc21 06/06/2024
[ 6889.489202] Call trace:
[ 6889.489204] dump_backtrace+0x0/0x1e0
[ 6889.489207] show_stack+0x30/0x40
[ 6889.489210] dump_stack+0xf0/0x130
[ 6889.489214] i2c_smbus_xfer+0x1ac/0x270
[ 6889.489218] i2c_smbus_write_byte_data+0x58/0x80
[ 6889.489220] nvvrs_update_bits.isra.0+0x64/0xc0
[ 6889.489221] nvvrs_rtc_disable_alarm+0x84/0x128
[ 6889.489223] nvvrs_rtc_irq_handler+0x24/0x60
[ 6889.489226] handle_nested_irq+0xc8/0x140
[ 6889.489228] regmap_irq_thread+0x34c/0x5c8
[ 6889.489231] irq_thread_fn+0x34/0xb0
[ 6889.489236] irq_thread+0x16c/0x2e0
[ 6889.489238] kthread+0x148/0x168
[ 6889.489241] ret_from_fork+0x10/0x18
[ 6889.489242] i2c_lock_bus: i2c-4 entry
[ 6889.489244] i2c_lock_bus: i2c-4 exit
[ 6889.489245] __i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.489246] __i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.489470] __i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.489471] i2c_unlock_bus: i2c-4 entry
[ 6889.489473] i2c_unlock_bus: i2c-4 exit
[ 6889.489474] i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.489475] i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.489478] i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.489480] CPU: 0 PID: 174 Comm: irq/254-nvvrs-p Not tainted 5.10.192+ #29
[ 6889.489483] Hardware name: NVIDIA Jetson AGX Orin Developer Kit/Jetson, BIOS 202210.4-90bcc21 06/06/2024
[ 6889.489485] Call trace:
[ 6889.489488] dump_backtrace+0x0/0x1e0
[ 6889.489490] show_stack+0x30/0x40
[ 6889.489492] dump_stack+0xf0/0x130
[ 6889.489494] i2c_smbus_xfer+0x1ac/0x270
[ 6889.489496] i2c_smbus_write_byte_data+0x58/0x80
[ 6889.489499] nvvrs_rtc_update_alarm_reg+0x40/0x158
[ 6889.489504] nvvrs_rtc_disable_alarm+0xa4/0x128
[ 6889.489505] nvvrs_rtc_irq_handler+0x24/0x60
[ 6889.489507] handle_nested_irq+0xc8/0x140
[ 6889.489510] regmap_irq_thread+0x34c/0x5c8
[ 6889.489512] irq_thread_fn+0x34/0xb0
[ 6889.489514] irq_thread+0x16c/0x2e0
[ 6889.489518] kthread+0x148/0x168
[ 6889.489521] ret_from_fork+0x10/0x18
[ 6889.489525] i2c_lock_bus: i2c-4 entry
[ 6889.489526] i2c_lock_bus: i2c-4 exit
[ 6889.489527] __i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.489528] __i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.489758] __i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.489760] i2c_unlock_bus: i2c-4 entry
[ 6889.489762] i2c_unlock_bus: i2c-4 exit
[ 6889.489764] i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.489769] i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.489770] i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.489771] CPU: 0 PID: 174 Comm: irq/254-nvvrs-p Not tainted 5.10.192+ #29
[ 6889.489772] Hardware name: NVIDIA Jetson AGX Orin Developer Kit/Jetson, BIOS 202210.4-90bcc21 06/06/2024
[ 6889.489773] Call trace:
[ 6889.489775] dump_backtrace+0x0/0x1e0
[ 6889.489779] show_stack+0x30/0x40
[ 6889.489780] dump_stack+0xf0/0x130
[ 6889.489784] i2c_smbus_xfer+0x1ac/0x270
[ 6889.489789] i2c_smbus_write_byte_data+0x58/0x80
[ 6889.489791] nvvrs_rtc_update_alarm_reg+0x60/0x158
[ 6889.489793] nvvrs_rtc_disable_alarm+0xa4/0x128
[ 6889.489796] nvvrs_rtc_irq_handler+0x24/0x60
[ 6889.489797] handle_nested_irq+0xc8/0x140
[ 6889.489799] regmap_irq_thread+0x34c/0x5c8
[ 6889.489802] irq_thread_fn+0x34/0xb0
[ 6889.489807] irq_thread+0x16c/0x2e0
[ 6889.489809] kthread+0x148/0x168
[ 6889.489812] ret_from_fork+0x10/0x18
[ 6889.489814] i2c_lock_bus: i2c-4 entry
[ 6889.489815] i2c_lock_bus: i2c-4 exit
[ 6889.489816] __i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.489819] __i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.490041] __i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.490042] i2c_unlock_bus: i2c-4 entry
[ 6889.490047] i2c_unlock_bus: i2c-4 exit
[ 6889.490050] i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.490052] i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.490054] i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.490055] CPU: 0 PID: 174 Comm: irq/254-nvvrs-p Not tainted 5.10.192+ #29
[ 6889.490056] Hardware name: NVIDIA Jetson AGX Orin Developer Kit/Jetson, BIOS 202210.4-90bcc21 06/06/2024
[ 6889.490057] Call trace:
[ 6889.490060] dump_backtrace+0x0/0x1e0
[ 6889.490063] show_stack+0x30/0x40
[ 6889.490065] dump_stack+0xf0/0x130
[ 6889.490067] i2c_smbus_xfer+0x1ac/0x270
[ 6889.490073] i2c_smbus_write_byte_data+0x58/0x80
[ 6889.490075] nvvrs_rtc_update_alarm_reg+0x80/0x158
[ 6889.490078] nvvrs_rtc_disable_alarm+0xa4/0x128
[ 6889.490079] nvvrs_rtc_irq_handler+0x24/0x60
[ 6889.490080] handle_nested_irq+0xc8/0x140
[ 6889.490083] regmap_irq_thread+0x34c/0x5c8
[ 6889.490087] irq_thread_fn+0x34/0xb0
[ 6889.490089] irq_thread+0x16c/0x2e0
[ 6889.490095] kthread+0x148/0x168
[ 6889.490097] ret_from_fork+0x10/0x18
[ 6889.490098] i2c_lock_bus: i2c-4 entry
[ 6889.490101] i2c_lock_bus: i2c-4 exit
[ 6889.490102] __i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.490103] __i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.490325] __i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.490326] i2c_unlock_bus: i2c-4 entry
[ 6889.490328] i2c_unlock_bus: i2c-4 exit
[ 6889.490329] i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.490331] i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.490332] i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.490334] CPU: 0 PID: 174 Comm: irq/254-nvvrs-p Not tainted 5.10.192+ #29
[ 6889.490335] Hardware name: NVIDIA Jetson AGX Orin Developer Kit/Jetson, BIOS 202210.4-90bcc21 06/06/2024
[ 6889.490338] Call trace:
[ 6889.490343] dump_backtrace+0x0/0x1e0
[ 6889.490345] show_stack+0x30/0x40
[ 6889.490346] dump_stack+0xf0/0x130
[ 6889.490350] i2c_smbus_xfer+0x1ac/0x270
[ 6889.490352] i2c_smbus_write_byte_data+0x58/0x80
[ 6889.490354] nvvrs_rtc_update_alarm_reg+0xa0/0x158
[ 6889.490358] nvvrs_rtc_disable_alarm+0xa4/0x128
[ 6889.490361] nvvrs_rtc_irq_handler+0x24/0x60
[ 6889.490364] handle_nested_irq+0xc8/0x140
[ 6889.490366] regmap_irq_thread+0x34c/0x5c8
[ 6889.490368] irq_thread_fn+0x34/0xb0
[ 6889.490372] irq_thread+0x16c/0x2e0
[ 6889.490374] kthread+0x148/0x168
[ 6889.490376] ret_from_fork+0x10/0x18
[ 6889.490381] i2c_lock_bus: i2c-4 entry
[ 6889.490382] i2c_lock_bus: i2c-4 exit
[ 6889.490384] __i2c_smbus_xfer: i2c-4 entry(60)
[ 6889.490386] __i2c_smbus_xfer: i2c-4 xfer to addr 60
[ 6889.490612] __i2c_smbus_xfer: i2c-4 exit(60) with 0
[ 6889.490613] i2c_unlock_bus: i2c-4 entry
[ 6889.490614] i2c_unlock_bus: i2c-4 exit
[ 6889.490615] i2c_smbus_xfer: i2c-4 exit(60) with 0
From tegra234-platforms-vrs.dtsi:
aliases {
rtc0 = &vrs_rtc;
rtc1 = &tegra_rtc;
};
bpmp {
i2c {
vrs@3c {
compatible = "nvidia,vrs-pseq";
reg = <0x3c>;
interrupt-parent = <&tegra_pmc>;
/* VRS Wake ID is 24 */
interrupts = <24 IRQ_TYPE_LEVEL_LOW>;
interrupt-controller;
#interrupt-cells = <2>;
status = "okay";
vrs_rtc: rtc {
status = "okay";
};
};
};
};
Do you have any idea what may cause this and how to solve this situation?
We have a custom carrier board and use a version:
# R35 (release), REVISION: 5.0, GCID: 35550185, BOARD: t186ref, EABI: aarch64, DATE: Tue Feb 20 04:46:31 UTC 2024