TDA4VM: TDA4 A72 linux watchdog issue

Hi,

I believe you are using the Linux SDK.

Try the below commands and let me know if you can see the watchdog reset:

cd /opt/ltp/
./runltp -P j721e-idk-gw -f ddt/wdt_test -s "WDT_M_FUNC_WRITE "

Best Regards,
Keerthy

hello, from the dts

watchdog0: watchdog@2200000 {
compatible = "ti,j7-rti-wdt";
reg = <0x0 0x2200000 0x0 0x100>;
clocks = <&k3_clks 252 1>;
power-domains = <&k3_pds 252 TI_SCI_PD_EXCLUSIVE>;
assigned-clocks = <&k3_clks 252 1>;
assigned-clock-parents = <&k3_clks 252 5>;
};

hello, from the dts

watchdog0: watchdog@2200000 {
compatible = "ti,j7-rti-wdt";
reg = <0x0 0x2200000 0x0 0x100>;
clocks = <&k3_clks 252 1>;
power-domains = <&k3_pds 252 TI_SCI_PD_EXCLUSIVE>;
assigned-clocks = <&k3_clks 252 1>;
assigned-clock-parents = <&k3_clks 252 5>;
};

Hello,

Can you please first confirm that the watchdog reset is functional with the above command?

- Keerthy

hello!

root@c801soc1:/opt/ltp# ./runltp -P j721e-idk-gw -f ddt/wdt_test -s "WDT_M_FUNC_WRITE "
INFO: creating /opt/ltp/output directory
INFO: creating /opt/ltp/results directory
INFO: Filtering testscenarios based on j721e-idk-gw capabilities
awk: cmd. line:1: warning: regexp escape sequence `\&' is not a known regexp operator
Checking for required user/group ids

'nobody' user id and group found.
'bin' user id and group found.
'daemon' user id and group found.
Users group found.
Sys group found.
Required users/groups exist.
If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.

/etc/os-release
ID=arago
NAME="Arago"
VERSION="2021.09"
VERSION_ID=2021.09
PRETTY_NAME="Arago 2021.09"

uname:
Linux c801soc1 5.10.120 #32 SMP PREEMPT Wed Jul 19 23:53:45 PDT 2023 aarch64 aarch64 aarch64 GNU/Linux

/proc/cmdline
console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000 root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait

Gnu C gcc (GCC) 9.2.1 20191025
Clang
Gnu make 4.3
util-linux 2.35.1
mount linux 2.35.1 (libmount 2.35.1: btrfs, namespaces, assert, debug)
modutils 26
e2fsprogs 1.45.7
Linux C Library > libc.2.30
Dynamic linker (ldd) 2.30
Linux C++ Library 6..
Procps 3.3.16
Net-tools 1.60
iproute2 iproute2-5.10.0
iputils 'V'
ethtool 5.10
Kbd 2.2.0
Sh-utils 8.31
Modules Loaded bluetooth ecdh_generic ecc rfkill ti_am335x_adc rpmsg_char kfifo_buf omap_rng rng_core irq_pruss_intc pru_rproc icss_iep crct10dif_ce ti_j721e_cpsw_virt_mac ti_k3_r5_remoteproc ti_am335x_)
obuf2_dma_sg v4l2_mem2mem videobuf2_dma_contig ti_k3_dsp_remoteproc videobuf2_memops videobuf2_v4l2 virtio_rpmsg_bus videobuf2_common can_dev rti_wdt sch_fq_codel rpmsg_kdrv_switch cryptodev ipv6

free reports:
total used free shared buff/cache available
Mem: 2239464 85364 2057208 9244 96892 2028116
Swap: 0 0 0

cpuinfo:
Architecture: aarch64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 1
Core(s) per socket: 2
Socket(s): 1
Vendor ID: ARM
Model: 0
Model name: Cortex-A72
Stepping: r1p0
BogoMIPS: 400.00
L1d cache: 64 KiB
L1i cache: 96 KiB
L2 cache: 1 MiB
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Spec store bypass: Not affected
Vulnerability Spectre v1: Mitigation; __user pointer sanitization
Vulnerability Spectre v2: Mitigation; CSV2, BHB
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid

AppArmor disabled

SELinux mode: unknown
no big block device was specified on commandline.
Tests which require a big block device are disabled.
You can specify it with option -z
COMMAND: /opt/ltp/bin/ltp-pan -e -S -a 1083 -n 1083 -p -f /tmp/ltp-WbaaG3Eru6/alltests -l /tmp/tmp.JeAUZD6mcx -C /opt/ltp/output/LTP_RUN_ON-tmp.JeAUZD6mcx.failed -T /opt/ltp/output/LTP_RUN_ON-tmp.Jef
INFO: Restricted to WDT_M_FUNC_WRITE
LOG File: /tmp/tmp.JeAUZD6mcx
FAILED COMMAND File: /opt/ltp/output/LTP_RUN_ON-tmp.JeAUZD6mcx.failed
TCONF COMMAND File: /opt/ltp/output/LTP_RUN_ON-tmp.JeAUZD6mcx.tconf
Running tests.......
<<<test_start>>>
tag=WDT_M_FUNC_WRITE stime=1661850481
cmdline="source 'common.sh'; do_cmd install_modules.sh 'wdt' ; DEV_NODE=`get_devnode.sh "wdt"` || die "error getting devnode for wdt"; do_cmd wdt_tests -device $DEV_NODE -ioctl -write"
contacts=""
analysis=exit
<<<test_output>>>
incrementing stop
|TRACE LOG|Inside do_cmd:CMD=install_modules.sh wdt|
|TRACE LOG|Inside do_cmd:CMD=wdt_tests -device /dev/watchdog -ioctl -write|

|TEST START|wdt_tests|
|TRACE LOG|******** WDT Testcase parameters ******** |[ 92.278963] watchdog: watchdog0: nowayout prevents watchdog being started!

|TRACE LOG|Device : /dev/watchdog|
|TRACE LOG|Loop Count : 1|
|TRACE LOG|I/O Operation : Write|
|TRACE LOG|Operation : Ioctl|
|TRACE LOG|Ioctl Name : WDIOC_KEEPALIVE|
|TRACE LOG|Ioctl Arg : 0 |
|TRACE LOG| ************* End of Test params ************* |
|TRACE LOG|Keeping WDT alive, sleep counter -0(sec)|
|TEST RESULT|PASS|wdt_tests|
|TEST END|wdt_tests|
|TRACE LOG|EVM will be rebooted after 150 seconds|
|TRACE LOG|149 seconds remaining before reboot|
|TRACE LOG|148 seconds remaining before reboot|

I want to know how to change the freq for the RTI0(A72) at main domain

I want to modify the control Register CTRLMMR_WWD0_CLKSEL Register on A72 linux, from 32K to 12M, how to modify the code, thank you

hello,