VoCore: SPI & MicroSD 7 | Vonger's Blog

Finally here is some good news. The SD card reply me.. 😀 Not sure whose problem now(might not the hardware problem), due to the reply is from spidev_test, the mmc driver still refuse its work. 🙂
PS: VoCore: SPI & MicroSD 6 is done yesterday actually. Just too busy to publish it.

Anyway, R4 R5 is removed from the dock.

This is the result.

spidev_test is in linux source, at /linux-3.10.49/Documentation/spi/spidev_test.c
And add this code to VOCORE.dts:spi@b00 to enable spidev driver.(replace that mmc-slot@1 if it exists)

spidev@1 {
    compatible = "linux,spidev";
    reg = <1>;
    spi-max-frequency = <1000000>;
};

spidev_test is simple, just send the SD boot code through the SPI to the microSD card.
I did not check whether or not the reply is correct yet 🙂 Have some food first, I guess there is no big issue.