WLAN from SDIO to SPI: battle plan

Andy Green andy at openmoko.com
Mon Aug 18 20:09:11 CEST 2008


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Somebody in the thread at some point said:

| Could be that s3c24xx_spi is acting up. If I don't find what's
| happening, then I'll switch to s3c24xx_spi_gpio (which is of
| course the driver we most emphatically don't want to use in the
| end).

In terms of proving viability of s3c2442 SPI, maybe it is more critical
to prove s3c24xx_spi can work at all / work with DMA than complete the
stack.  Because shifting the rest of the big stack over to SPI is going
to be a very phyrric victory if it turns out that fast SPI is broken and
we can't really use it on 2442 anyway.

I recall sitting there with Willie trying to get the motion sensors
working with s3c24xx_spi and having to switch to s3c24xx_spi_gpio about
6 months ago.  We bitbanged it ourselves in the end but it won't fly for
WLAN.

- -Andy
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