Hello,

 

first post here, so sorry if did not provide enough information. I need to change spi buffer length to 8192. So far tried:

1) modprobe spidev bufsiz=8192

creating the file /etc/modprobe.d/spidev.conf and adding to it the line "options spidev bufsiz=8192"

When I do "cat /sys/module/spidev/parameters/bufsiz", it gives me "4096".

 

2) Add to /boot/cmdline.txt:

spidev.bufsiz=8192

When I do "cat /sys/module/spidev/parameters/bufsiz", it gives me "4096".

 

3) cd /sys/module/spidev/parameters
chmod 666 bufsiz
echo 65536  > bufsiz

did nothing.

 

4) /boot/armbianEnv.txt

added options spidev bufsiz=8192

When I do "cat /sys/module/spidev/parameters/bufsiz", it gives me "4096".

 

I don't know anything else what to try. Is it possible.

Also facing SPI issues.  Trying to flash my laptop using a soic clip connected to spidev1.0 as well as Mizy on spidev0.0. Unlike some others in the forum I was able to activate both successfully. After using flashrom, however, my flashed laptop or orange pi zero won't boot from the SPI chip yet. 

 

My armbianEnv.txt:

 

Quote

verbosity=1

bootlogo=false

console=serial

disp_mode=1920x1080p60

overlay_prefix=sun8i-h3

overlays=spi-jedec-nor spi-spidev usbhost2 usbhost3

param_spidev_spi_bus=0

param_spidev_spi_cs=0

param_spidev_max_freq=1000000

rootdev=UUID=9f347494-581e-4ce3-8848-05016ce8b9c9

rootfstype=ext4

user_overlays=spi-double-spidev-cs

usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u

 

My report from flashrom:

Quote

$ sudo flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -w /home/hardheid/Lenovo_T460_backup.bin

flashrom on Linux 5.10.12-sunxi (armv7l)

flashrom is free software, get the source code at https://flashrom.org                                                                                                  

Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).

Found Winbond flash chip "W25Q128.V" (16384 kB, SPI) on linux_spi.

Reading old flash chip contents... done.

Erasing and writing flash chip... Erase/write done.

Verifying flash... VERIFIED.

 

Same with the Mizy images, write but not working in the end. Could this be the result of a bad buffer? Am I doing something wrong? 

Hi.
Have you found a solution for you spidedv buffer size issue? I am facing the same problem with nothing to be found online... 
Thanks