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Re: Shark LED and I2C drivers


On Thu, 22 Apr 2021 07:31:48 +0200
Julian Coleman <jdc%coris.org.uk@localhost> wrote:

> I was looking at the DNARD User Guide and noticed that it mentioned an I2C
> bus connected to the Sequoia chip to communicate with the DIMM's, and also
> mentioned which pins were used.  After a bit of experimentation, I have a
> working bit-bang I2C bus.  While looking at our sequoia code, it seemed
> easy to manipulate the front and debug LED's too.
> I've attached a patch that:
>   adds the additional devices (shark_machdep.c)
>   configures the additional devices (ofisa.c)
>   handles register configuration for the I2C bus and the LED's (sequoia.c)
>   adds glue for the devices (shark_iic.c and shark_led.c)

I'll dust off the R4 shark just to see if there are any funny differences :)
Should have time on my next weekend...

have fun

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