Messages in this thread | | | From | Christophe Leroy <> | Subject | Re: Is PPC 44x PIKA Warp board still relevant? | Date | Mon, 26 Sep 2022 06:34:17 +0000 |
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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
> > 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 ?
Maybe let's perform a more standard implementation is see if anybody screams ?
Christophe | |