Hello,
It seems that I am facing the same problem!. I attach another trace
that also shows the sd I/O.
I have also commented out the dma line at probe and no better results
As you point, the card is unable to reply the cid. But not only
that, after that failure the card replyies
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
Hello
Thanks for your reply
Is the I/O logged from within the Xilinx-SPI-Driver or from within the
mmc-spi-layer?
It is take from inside the spi driver.
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
Dear Ricardo Ribalda Delgado,
In message aa76a2be0906111349s2ff947eo35149ef14e29d...@mail.gmail.com you
wrote:
What frequency does Your SPI-Bus use?
33Mhz arghh. just checked is over the standard... Tomorrow I will
test with a slower clk
Just some really stupid questions:
This is
Hello Wolfgang
This is with a 4xx core, right? Is this the same SPI controller design
like in AMCC's 40x and 44x cores, i. e. with a FIFO of depth 1?
It is a ppc440 but it is does not have ans spi controller as in the
amcc. The spi controller is a xilinx core allocated at the plb bus,
Peter Korsgaard wrote:
Joachim == Joachim Foerster j...@gmx.de writes:
Hi,
Joachim Any hints? Does anybody use SD card support with
Joachim mmc_spi+xilinx_spi ?
I don't, but have you compared the spi signals on a scope in the 2
setups? Is timing significantly different?
Joachim == Joachim Foerster j...@gmx.de writes:
Hi,
Joachim Any hints? Does anybody use SD card support with
Joachim mmc_spi+xilinx_spi ?
I don't, but have you compared the spi signals on a scope in the 2
setups? Is timing significantly different?
--
Bye, Peter Korsgaard
-Original Message-
From: Joachim Foerster [mailto:j...@gmx.de]
Sent: Friday, June 05, 2009 9:34 AM
To: linuxppc-...@ozlabs.org; John Linn;
dbrown...@users.sourceforge.net
Cc: lor...@missinglinkelectronics.com;
joac...@missinglinkelectronics.com
Subject: SD card over (xilinx_)SPI
Hi,
we have a very strange problem with SD-card-over-SPI support using
2.6.29.4 on our custom PowerPC 405 (Virtex-4 FX FPGA) based board. To
summarize the problem in one sentence: mmc_spi gets a timeout (error
-110) after sending MMC command CMD10 (CID, card identification?).
The attached log
