Power monitoring and management

[Matt Spinler]

On 4/28/2020 3:23 AM, 张黎明 wrote:
> hello,
> We have a functional requirement - the AST2400 sends a PWR_ON pin down 
> signal for 100 ms to CPLD to request that the server power on. The 
> CPLD change PGOOD pin up and powers on the system. If the CPLD 
> receives a continuous PWR_ON pin down signal for 4 s, it will 
> immediately shut down the server and change PGOOD pin down. We changed 
> the "PGOOD"、"POWER_PIN" pin definition in 
> /etc/default/obmc/gpio/gpio_defs.json file, but it does not work.where 
> should we change the definition of these pins to make it meet our 
> needs, and how to add a delay for PWR_ON pin.

The  code that handles gpio_defs.json is 
https://github.com/openbmc/skeleton/tree/master/op-pwrctl, though I 
believe there is an alternate version that uses entity manager to get 
the GPIO definitions somewhere else.  You should be able to modify that 
as necessary to meet your needs.



> Regards,
> Garnet