Christophe Leroy <christophe.le...@csgroup.eu> writes: > Hi Dmitry > > Le 25/09/2022 à 07:06, Dmitry Torokhov a écrit : >> Hi Michael, Nick, >> >> I was wondering if PIKA Warp board still relevant. The reason for my >> question is that I am interested in dropping legacy gpio APIs, >> especially OF-specific ones, in favor of newer gpiod APIs, and >> arch/powerpc/platforms/44x/warp.c is one of few users of it. > > As far as I can see, that board is still being sold, see > > https://www.voipon.co.uk/pika-warp-asterisk-appliance-p-932.html
On the other hand it looks like PIKA technologies went bankrupt earlier this year. >> The code in question is supposed to turn off green led and flash red led >> in case of overheating, and is doing so by directly accessing GPIOs >> owned by led-gpio driver without requesting/allocating them. This is not >> really supported with gpiod API, and is not a good practice in general. > > As far as I can see, it was ported to led-gpio by > > ba703e1a7a0b powerpc/4xx: Have Warp take advantage of GPIO LEDs > default-state = keep > 805e324b7fbd powerpc: Update Warp to use leds-gpio driver > >> Before I spend much time trying to implement a replacement without >> access to the hardware, I wonder if this board is in use at all, and if >> it is how important is the feature of flashing red led on critical >> temperature shutdown? > > Don't know who can tell it ? I would be surprised if anyone is still running upstream kernels on it. I can't find any sign of any activity on the mailing list related to it since it was initially merged. > Maybe let's perform a more standard implementation is see if anybody > screams ? How much work is it to convert it? Flashing a LED when the machine dies is nice, but not exactly critical, hopefully the machine *isn't* dying that often :) cheers