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  5. [solved] Need help with RV901T as MESA 7i90: SPI isn't working

[solved] Need help with RV901T as MESA 7i90: SPI isn't working

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26 Mar 2024 22:34 #296850 by cornholio
Replied by cornholio on topic Need help with RV901T as MESA 7i90: SPI isn't working
I think I recall you were powering the board from 3.5v I’d check the output from the voltage regs, just to make sure everything is as it should be.

I noticed that in your card file you changed the clock values from constants to integer values, that wasn’t needed, neither was changing the card name values, but that should be neither here nor there.

For some reason I can’t find the SPI sources for the rv901t, tho I do have EPP but These are for 7c81 as my poor board has a couple of issues with the knuckle dragger who desoldered 2 chips, yeah a broken track per chip.

At this stage it might well worth loading a led flasher type bitstream just to confirm operation of the board.

Also Pete’s suggestion about disconnecting the logic analyser would be an idea. All I used was a multimeter just to check that the power rails were good.

With clocks 8 has to become 16 and 4 has to become 8, so there’s only 2 values to change.

During my experiments I was only using a single GND. Mesaflash worked fine, but wasn’t so great when communicating with the driver, I had to limit the clock speed.
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27 Mar 2024 21:01 #296940 by ago_tm
Replied by ago_tm on topic [solved] Need help with RV901T as MESA 7i90: SPI isn't working
Guys, thanks a lot! Looks like there was my bad with the not very qualified soldering. I desoldered all the pads and cleaned the mask from them. Then returned all back and it start working! even with analyzer.

Still had to find the place of checking the crystal in mesaflash to avoid this:
sudo ./mesaflash --device 7i90 --spi --addr /dev/spidev0.0 --fallback --write ~/Downloads/topgcspihostmot2.bit

Checking file... OK
  File type: Xilinx bit file
Error: wrong bitfile destination device: 6slx16ftg256, should be 6slx9tqg144

But this is the minor thing. Thanks again!
sudo ./mesaflash --device 7i90 --spi --addr /dev/spidev0.0 --readhmid --verbose
unable to set bpw32, fallback to bpw8
Configuration Name: HOSTMOT2

General configuration information:

  BoardName : MESA7I90
  FPGA Size: 16 KGates
  FPGA Pins: 256
  Number of IO Ports: 3
  Width of one I/O port: 24
  Clock Low frequency: 100.0000 MHz
  Clock High frequency: 200.0000 MHz
  IDROM Type: 3
  Instance Stride 0: 4
  Instance Stride 1: 64
  Register Stride 0: 256
  Register Stride 1: 256

Added [solved] to header!
Attachments:

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27 Mar 2024 21:32 #296942 by ago_tm
Replied by ago_tm on topic Need help with RV901T as MESA 7i90: SPI isn't working
Sorry, removed [solved] for a while...

sudo ./mesaflash --device 7i90 --spi --addr /dev/spidev0.0 --fallback --write ~/Downloads/topgcspihostmot2.bit

Checking file... OK
File type: Xilinx bit file
Error: wrong bitfile destination device: 6slx16ftg256, should be 6slx9tqg144

But this is the minor thing. Thanks again!


Hmmm... I easily changed the following line
board->llio.fpga_part_number = "6slx16ftg256";
but now I faced with the BootBlock...
$ sudo ./mesaflash --device 7i90 --spi --addr /dev/spidev0.0 --fix-boot-block --fallback --write ~/Downloads/topgcspihostmot2.bit
unable to set bpw32, fallback to bpw8
Checking file... OK
  File type: Xilinx bit file
Erasing sector 0 for boot block
BootBlock installed
Failed to write valid boot sector

Is it possible to write the fallback bitstream to the flash using mesaflash in my case?

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27 Mar 2024 22:34 #296947 by PCW
Replied by PCW on topic Need help with RV901T as MESA 7i90: SPI isn't working
what does:

sudo ./mesaflash --device 7i90 --spi --addr /dev/spidev0.0 --verbose

report?

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28 Mar 2024 05:35 #296968 by ago_tm
Replied by ago_tm on topic Need help with RV901T as MESA 7i90: SPI isn't working

what does:
sudo ./mesaflash --device 7i90 --spi --addr /dev/spidev0.0 --verbose
report?


Honestly... not too much:
unable to set bpw32, fallback to bpw8
and this is it.
sudo ./mesaflash --device 7i90 --spi --addr /dev/spidev0.0 --verbose --readhmid

gives more:
unable to set bpw32, fallback to bpw8
Configuration Name: HOSTMOT2

General configuration information:

  BoardName : MESA7I90
  FPGA Size: 16 KGates
  FPGA Pins: 256
  Number of IO Ports: 3
  Width of one I/O port: 24
  Clock Low frequency: 100.0000 MHz
  Clock High frequency: 200.0000 MHz
  IDROM Type: 3
  Instance Stride 0: 4
  Instance Stride 1: 64
  Register Stride 0: 256
  Register Stride 1: 256

Modules in configuration:

  Module: WatchDog
  There are 1 of WatchDog in configuration
  Version: 0
  Registers: 3
  BaseAddress: 0C00
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: IOPort
  There are 3 of IOPort in configuration
  Version: 0
  Registers: 5
  BaseAddress: 1000
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

  Module: LED
  There are 1 of LED in configuration
  Version: 0
  Registers: 1
  BaseAddress: 0200
  ClockFrequency: 100.000 MHz
  Register Stride: 256 bytes
  Instance Stride: 4 bytes

Configuration pin-out:

IO Connections for P1
Pin#                  I/O   Pri. func    Sec. func        Chan     Sec. Pin func   Sec. Pin Dir

 1                      0   IOPort       None           
 3                      1   IOPort       None           
 5                      2   IOPort       None           
 7                      3   IOPort       None           
 9                      4   IOPort       None           
11                      5   IOPort       None           
13                      6   IOPort       None           
15                      7   IOPort       None           
17                      8   IOPort       None           
19                      9   IOPort       None           
21                     10   IOPort       None           
23                     11   IOPort       None           
25                     12   IOPort       None           
27                     13   IOPort       None           
29                     14   IOPort       None           
31                     15   IOPort       None           
33                     16   IOPort       None           
35                     17   IOPort       None           
37                     18   IOPort       None           
39                     19   IOPort       None           
41                     20   IOPort       None           
43                     21   IOPort       None           
45                     22   IOPort       None           
47                     23   IOPort       None           

IO Connections for P2
Pin#                  I/O   Pri. func    Sec. func        Chan     Sec. Pin func   Sec. Pin Dir

 1                     24   IOPort       None           
 3                     25   IOPort       None           
 5                     26   IOPort       None           
 7                     27   IOPort       None           
 9                     28   IOPort       None           
11                     29   IOPort       None           
13                     30   IOPort       None           
15                     31   IOPort       None           
17                     32   IOPort       None           
19                     33   IOPort       None           
21                     34   IOPort       None           
23                     35   IOPort       None           
25                     36   IOPort       None           
27                     37   IOPort       None           
29                     38   IOPort       None           
31                     39   IOPort       None           
33                     40   IOPort       None           
35                     41   IOPort       None           
37                     42   IOPort       None           
39                     43   IOPort       None           
41                     44   IOPort       None           
43                     45   IOPort       None           
45                     46   IOPort       None           
47                     47   IOPort       None           

IO Connections for P3
Pin#                  I/O   Pri. func    Sec. func        Chan     Sec. Pin func   Sec. Pin Dir

 1                     48   IOPort       None           
 3                     49   IOPort       None           
 5                     50   IOPort       None           
 7                     51   IOPort       None           
 9                     52   IOPort       None           
11                     53   IOPort       None           
13                     54   IOPort       None           
15                     55   IOPort       None           
17                     56   IOPort       None           
19                     57   IOPort       None           
21                     58   IOPort       None           
23                     59   IOPort       None           
25                     60   IOPort       None           
27                     61   IOPort       None           
29                     62   IOPort       None           
31                     63   IOPort       None           
33                     64   IOPort       None           
35                     65   IOPort       None           
37                     66   IOPort       None           
39                     67   IOPort       None           
41                     68   IOPort       None           
43                     69   IOPort       None           
45                     70   IOPort       None           
47                     71   IOPort       None

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28 Mar 2024 14:51 #297003 by PCW
Replied by PCW on topic Need help with RV901T as MESA 7i90: SPI isn't working
Ahh I had forgotten that only Ethernet and serial cards provide
a lot of info from the --verbose command, including the FPGA
flash memory size, ID code and write and erase page sizes:

    3: FPGAFlsh (flash, RW, 32-bit) [size=16M], page size: 256, erase size: 65536

  [space 3] FPGA flash eeprom:
    flash size: 16Mb (id: 0x14)

I suspect some error either with an unsupported flash chip or maybe a
SPI pinout issue
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28 Mar 2024 21:23 #297041 by ago_tm
Replied by ago_tm on topic [solved] Need help with RV901T as MESA 7i90: SPI isn't working
I finally get flash written with just using the same SPI0 on RPI and JP5 connector
JP5 connector on RV901T

In Xilinx ISE it it required to set the output bitstream format as bin (right click on the "Generate Programming File" > "Process Properties..." > "Create Binary Configuration File" ☑ ).
Then
sudo apt install -y flashrom
sudo flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=10000
> Found Winbond flash chip "W25Q32.V" (4096 kB, SPI) on linux_spi.

sudo flashrom -f -p linux_spi:dev=/dev/spidev0.0,spispeed=10000 -w ~/Downloads/TopGCSPIHostMot2.bin
> Error: Image size (524288 B) doesn't match the expected size (4194304 B)!

dd if=/dev/zero bs=1 count=1 seek=4194303 of=TopGCSPIHostMot2.bin
sudo flashrom -f -p linux_spi:dev=/dev/spidev0.0,spispeed=10000 -w ~/Downloads/TopGCSPIHostMot2.bin
> Found Winbond flash chip "W25Q32.V" (4096 kB, SPI) on linux_spi.
> Reading old flash chip contents... done.
> Erasing and writing flash chip... Erase/write done.
> Verifying flash... VERIFIED.

I also tried to make a kind of SPI-bridge bitstream for the board to avoid disconnecting of the rv901t board from the RPi, but it is not my level of fpga configuring yet.

Anyway, I think I can mark it as [solved].

Many thanks to PCW and cornholio!

Not sure, probably this thread better to move to the Hardware & Machines section.

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31 Mar 2024 19:26 #297301 by ago_tm
Replied by ago_tm on topic [solved] Need help with RV901T as MESA 7i90: SPI isn't working
As a bottom line I did a rebase to remove unnecessary changes and save the only required changes for running RV901T as Mesa 7i90 via spi in a single of the just the changes required to get it started with just 72 I/O pins: github.com/golyakoff/hostmot2-rv901t-7i9...abf87a09ed5a3145c7d2

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01 Apr 2024 03:38 #297334 by cornholio
Replied by cornholio on topic [solved] Need help with RV901T as MESA 7i90: SPI isn't working
All my bit files are 464577 bytes for the RV901T. I suspect the bin files would be smaller as the bit files are text based. (guessing)

I can't say I've used bin format, so unsure how long the file should be.

I use a usb-blaster and OpenFPGAloader, to program the flash it first loads a a bit stream to load the flash via JTAG, then loads the flash with your bit stream.
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01 Apr 2024 03:50 #297337 by cornholio
Replied by cornholio on topic [solved] Need help with RV901T as MESA 7i90: SPI isn't working
This tread as well would be better off in "Driver Boards".
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  5. [solved] Need help with RV901T as MESA 7i90: SPI isn't working
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