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Adding second SD Card to Zedboard PMOD

Former Member

I am trying to add a second SD card P/N PMODSD (link at the bottom) to the Zedboard using one of the PMOD connectors. I know the SD card built into the Zedboard connects directly into the Processing System of the Zedboard and MIO connectors therefore does that mean to add in another SD card I would have to use the PMOD connected to the PS. Or can I use any of the four PMODs connected to the PL side of the Zedboard?

Secondly, if is possibly to add another SD card to the Zedboard, is there any downloadable configurations available already for an SPI communication PMOD? Is there any code available so I can just configure into my LINUX platform and connect directly to the PMOD SD card?

http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,401,513&Prod=PMOD-SD

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    You can add a second SD Card interface to the ZedBoard using either the second SD Card controller in the Zynq PS (Processing System) or by adding an axi_quad_spi IP to the PL (Programmable Logic) section. You might be able to map the PS SPI controller SD1 signals to the ZedBoard PS PMOD interface (JE1), but you would have to make sure that no other functions you have enabled are using those MIO pins (the MIO interface is multiplexed). You can always direct the PS SD1 controller signals to one of the PL based PMOD interfaces via the EMIO pins. Or you could connect the axi_quad_spi interface to any of the PL based PMOD interfaces.

     

    There is example 'bare metal' driver code in the SDK for either SD Card controller. Perhaps someone else can comment on the availability of Linux drivers for either of the SD Card controller options.

     

    -Gary

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    You can add a second SD Card interface to the ZedBoard using either the second SD Card controller in the Zynq PS (Processing System) or by adding an axi_quad_spi IP to the PL (Programmable Logic) section. You might be able to map the PS SPI controller SD1 signals to the ZedBoard PS PMOD interface (JE1), but you would have to make sure that no other functions you have enabled are using those MIO pins (the MIO interface is multiplexed). You can always direct the PS SD1 controller signals to one of the PL based PMOD interfaces via the EMIO pins. Or you could connect the axi_quad_spi interface to any of the PL based PMOD interfaces.

     

    There is example 'bare metal' driver code in the SDK for either SD Card controller. Perhaps someone else can comment on the availability of Linux drivers for either of the SD Card controller options.

     

    -Gary

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