Search the Community
Showing results for tags 'timeout'.
Found 1 result
Dear All, Me and a colleague of mine are facing an SPI timeout issue on a Zynq. We already posted the issue in the Xilinx forum: https://forums.xilinx.com/t5/Embedded-Linux/SPI-transfer-timeout/td-p/833550 but we did not receive any answer, yet. So I would like to ask your help. I am trying to use a TFT LCD screen with the Digilent Artyz7, exploiting the frame buffer. I created a project on Vivado that exports the Zynq PS SPI interface through EMIO. I have already deployed the linux-digilent kernel (v4.4.0) on the Zynq and I am able to see the SPI peripheral under /sys/class/spi_master/spi2.0 (the device tree has been generated using SDK). Thus, as soon as I try to insert the kernel module for the frame buffer support, I get the following error: spi2.0: SPI transfer timed out I attach the images from the logic analyzer: The kernel module of the frame buffer sends the data correctly through the SPI interface before going to timeout state. Any ideas or suggestions regarding this issue? Thanks a lot. Best Regards, Enrico