Hello,
we are using imx8qxp mek and linux-imx 5.4, we modified u-boot so user could set it to start watchdog before load kernel, and question is what is correct way to define in linux if scu watchdog was started by u-boot.
according to scu firmware documentation (from imx-scfw-porting-kit-1.7.3) it has
sc_timer_get_wdog_status and sc_timer_pt_get_wdog_status functions,
sc_timer_get_wdog_status() works, but only returns timeout and remaining time, so enabled/disabled status could only be defined indirectly; sc_timer_pt_get_wdog_status() from other hand should also return enabled flag, but it required partition number as parameter. How could we know correct partition number?
firmware docs also say there is sc_rm_get_partition() function, but look like calls to resource manager functions are not implemented in 5.4 kernel. Problem here also is that look like parameters, passed by scu-wdt driver to arm_smc, call doesn't fit with scfw docs, for example to access timer function it passes 0xC2000002 magic and function number and it doesn't matches with docs. Please point me where I could find such parameters to call resource manager sc_rm_get_partition() function.
Thanks.
