Re: sharp zaurus sl-5500 (collie): touchscreen now works

[Marcin Juszkiewicz]

Yesterday someone added following info into OpenZaurus FAQ [1]:

> Zaurus SL-5500 MMC/SDIO technical info
>
> For communicating with the MMC/SDIO card SL-5500 uses the LoCoMo built-in
> SPI controller (secondary communication protocol) and 3 LoCoMo GPIOs
>
> LOCOMO_SPIMD for SPI MODE
> LOCOMO_SPICT for SPI CONTROL
> LOCOMO_SPIST for SPI STATUS
> LOCOMO_SPITD for SPI TRANSMIT (write)
> LOCOMO_SPIRD for SPI RECEIVE (read)
>
> LOCOMO_GPIO(13) for MMC irq / card detect
> LOCOMO_GPIO(14) for MMC write protect test bit
> LOCOMO_GPIO(15) for MMC power
>
> All these registers are 16bit, and data transfers are 8bit. On resume
> the SPI MODE is set to 0x6c14, on suspend to 0x3c14.
>
> Useful bits in the SPI MODE register: 0x0001, 0x0040, 0x0080.
> Useful bits in the SPI CONTROL register: 0x0040 and 0x0080.
>
> For further information read the Sandisk SD card manual. A software
> implementation of the SPI MMC/SD protocol driver can be be found at
> http://kiel.kool.dk/mmc.c

Maybe this will help.

1. http://openzaurus.berlios.de/FAQ
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