Re: Epson13806 performances on Pb1100

[Pete Popov <ppopov@embeddedalley.com>]

Karl Lessard wrote:
> Hi all,
>
> I'm currently developping on a Pb1100 alchemy board, and I use the Epson 
> 13806 graphic controller connected to the Au1100 static bus. I've written a 
> driver for it for kernel 2.6.x, and update the Au1100 code so I can access 
> 0xE 0000 0000 address range.
> Everything works fine, but for the speed. It seems that accessing the chip is 
> too slow for having high-graphic performances. The LCLK is set at 49500KHz, 
> as the memory clock inside the chip. I know it's a bit overclocked, but a 
> lower LCLK freezes my system.
I've used the chip with the 2.4 kernel/driver to run X and some 
apps. I'm not sure what you mean by high performance -- does X run 
at reasonable speeds?
Pete

> I would like to know if anyone have encountered this performance problem in 
> the past with this chip.
> Thanks in advance,
> Karl