On the 7-series, SD performance is as usual: # dd if=/dev/mmcblk0 of=/dev/null bs=1M count=20 20+0 records in 20+0 records out 20971520 bytes (20.0MB) copied, 0.997935 seconds, 20.0MB/s
I did notice that even on the 7 series programming the FPGA from Linux (using fpga-manager framework) is broken in the 2018.3 release now: fpga_manager fpga0: writing fpga.bin to Xilinx Zynq FPGA Manager fpga_manager fpga0: Error after writing image data to FPGA On 21-03-19 18:08, Mike Looijmans wrote: > Have only tried the MPSoC. > > I haven't tried the 7k yet with 2018.3, may get to that tomorrow. I > suspect it's something with the PMU interface and/or clock dividers. > > > On 21-03-19 17:54, Peter Smith wrote: >> Mike, although I have not made any measurements I have noticed in the >> last few days (coincidentally I have been doing a lot of work with a >> ZCU102) that the SD interface seemed a bit slow. Are you seeing this on >> Zynq 7K or US+ MPSoC? >> Best Regards >> Peter >> >> >> On Thu, 21 Mar 2019 at 16:38, Mike Looijmans <mike.looijm...@topic.nl >> <mailto:mike.looijm...@topic.nl>> wrote: >> >> The SD and eMMC controller has become terribly slow in 2018.3: >> >> # echo 3 > /proc/sys/vm/drop_caches >> >> # dd if=/dev/mmcblk0 of=/dev/null bs=1M count=20 >> 20+0 records in >> 20+0 records out >> 20971520 bytes (20.0MB) copied, 4.972666 seconds, 4.0MB/s >> >> # dd if=/dev/mmcblk1 of=/dev/null bs=1M count=20 >> 20+0 records in >> 20+0 records out >> 20971520 bytes (20.0MB) copied, 38.899436 seconds, 526.5KB/s >> >> >> This used to be over 160MB/s for the eMMC (mmcblk0) and over 20 MB/s >> for the >> SD card (mmcblk0) with the 2018.1 kernel and bootloader. >> >> This is only in Linux, the bootloader still reads at about 10MB/s >> from the SD >> card. So apparently the clocks are set up okay. >> >> According to the kernel, the clocks and interface are running at >> full speed: >> >> # cat /sys/kernel/debug/mmc0/ios >> clock: 200000000 Hz >> actual clock: 200000000 Hz >> vdd: 21 (3.3 ~ 3.4 V) >> bus mode: 2 (push-pull) >> chip select: 0 (don't care) >> power mode: 2 (on) >> bus width: 3 (8 bits) >> timing spec: 9 (mmc HS200) >> signal voltage: 1 (1.80 V) >> driver type: 0 (driver type B) >> >> # cat /sys/kernel/debug/mmc1/ios >> clock: 50000000 Hz >> actual clock: 50000000 Hz >> vdd: 21 (3.3 ~ 3.4 V) >> bus mode: 2 (push-pull) >> chip select: 0 (don't care) >> power mode: 2 (on) >> bus width: 2 (4 bits) >> timing spec: 2 (sd high-speed) >> signal voltage: 0 (3.30 V) >> driver type: 0 (driver type B) >> >> >> Any insights? >> -- >> _______________________________________________ >> meta-xilinx mailing list >> meta-xilinx@yoctoproject.org <mailto:meta-xilinx@yoctoproject.org> >> https://lists.yoctoproject.org/listinfo/meta-xilinx >> > > -- _______________________________________________ meta-xilinx mailing list meta-xilinx@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-xilinx
