Re: PDC20269: Limit on number of controllers?

[Albert Lee <albertcc@tw.ibm.com>]

Winstel, Drew wrote:

> I am not sure whether you are
> correct about the PLL being initialized (I don't know
> enough about the internals to say for certain), but I
> have attached the dmesg output from 2.6.10 compiled 
> with your patch 

   Thanks for the testing and dmesg. From the dmesg, we can see
1st adapter: pll_ctl[57][D]  => PLL initialized by the firmware
2nd adapter: pll_ctl[57][D]  => PLL initialized by the firmware
3rd adapter: pll_ctl[58][4D] => PLL uninitialized
4th adapter: pll_ctl[58][4D] => PLL uninitialized

So, the firmware on the pdc20269 only initialize the 1st and 2nd adapters.
PLL of adapter 3/4 are left uninitialized by the firmware.

The pdc202xx_new driver relies on the firmware to initialize the PLL.
That's why adapter 3/4 won't work.

> I have yet to test ATAPI devices on it.  
With 2.6.10 + pdc20269, there is a known problem on ATAPI DMA.
Please use 2.6.11 to test ATAPI.


Albert