Hi All, > On Wed, 13 Mar 2013 15:04:38 +0000, BrunoFerreira wrote: > >I'm currently working with a new board iEi NOVA-PV-D5251 [1] that > >have the Fintek F81865 chip for Super I/O support and I will need to > >develop the watchdog driver and another to access to the IO that this > >board supports (gpio). I made a search and I see that already exists > >a > >driver for F71808E chip, I use this driver as an example an I made a > >new driver for F81865 chip. My driver is working pretty well, but > >I've > >a question that I can't find the answer on datasheet of this chip > >that > >may be Wim or Giel could know. > > >On both chips, we need to configure a pin that can work as a normal > >GPIO (F81865: Set pin 70 the function of WDTRST#/GPIO15 is WDTRST# | > >F71808E: Set pin 21 to GPIO23/WDTRST#, then to WDTRST#), this is here > >where I get myself confused, this WDTRST will be mapped in any GPIO > >output on my board? I mean, if the watchdog is enable I will get any > >output pin set to 1 (i.e. the GPIO15, output 5?) and when the > >watchdog > >goes down this output goes to 0? > > Sorry, I can't give you a definite answer on that. All Fintek > datasheets I've seen are very poorly written. At one point I actually > stopped trusting the datasheet enough to go through the hassle of > hooking up a scope to the pins of the chip. > > Hazarding a guess however, I'd say that when the watchdog is enabled > you cannot use the WDTRST pin as a GPIO pin. > > >The other question is to Wim, can you tell me if there is interest in > >add this chip support to kernel? > > This would be a yes, unless there are good reasons not to include it in > mainline. The answer is indeed yes. Has a patch been created since this message? Kind regards, Wim. -- To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
