Microcode patching

Joakim Tjernlund joakim.tjernlund at lumentis.se
Sat Nov 9 02:56:10 EST 2002

> Hi all,
> I've got a question regarding the mpc8xx microcode patches in
> arch/ppc/8xx_io/micropatch.c. We do need usb host mode, i2c and
> ethernet operation at the same time. As I understood, i can't load
> the microcode patches for usb sof generation and iic/spi together,
> because they "live" at the same address. Now my question: What occurs
> if I don't load the ii2/spi patch. I do need the usb sof timing, but
> does the i2c-Interface work without the iic/spi patch ? As I read on
> the motorola webserver, the iic/spi is needed for concurrent operation
> of scc ethernet and i2c. Does i2c work correctly without the patch if
> I don't use ethernet ?

I2C will work fine without I2C microcode patch if you don't use ethernet on SCC1

Also, I submitted a new i2c-algo-8xx.c driver to this list about 2 weeks ago. It contains
sevral bug fixes and improvements. It's not in linuxppc BK yet, but I think it will be soon.


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