Hello,
Ricardo Ribalda Delgado wrote:
Hello,
It seems that I am facing the same problem!. I attach another trace
that also shows the sd I/O.
Is the I/O logged from within the Xilinx-SPI-Driver or from within the
mmc-spi-layer?
The response to CMD10 seems quite strange to me. The R1 answer to that
command says that everything is OK, so what is done next is that the
0xfe token will be expected by the mmc-spi-layer. Obviously that one is
not received within the proper time (assuming your data-logging was done
from within xilinx-spi-driver). Also be aware of printk() taking
milliseconds for printing to console, within time critical routines that
might not be the best choice for debugging.
What frequency does Your SPI-Bus use?
Also double check to completely disable the whole
if (spi->master->dev.parent->dma_mask) {
...
}
block within mmc_spi_probe(). That worked for us (as we already said as
an ugly workaround).
Regards,
Lorenz
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