spi_master: No such file or directory

[zogthegreat]

Hi everyone!

 

I snagged a Dell WYSE 3020 thin client on eBay for $8 USD as a toy to play around with. I'm trying to follow the instructions found here to get Open Firmware installed:

 

https://linux-mmp.docs.kernel.org/dell-wyse-3020.html#

 

I've made the bootable USB and connect my Raspberry Pi with a 4 pin USB to serial cable. I have the white wire connected to TX, green to RX and gnd to gnd as described in the document:

 

         ___
        |   |
CN4502  | o | TX
Debug   | o | RX
Conn1   | o | GND
        | o |
B       | o |
        |___|

When I try to flash via the command line, I get the following:

 

pi@raspberrypi:~/Documents $ echo spidev >/sys/devices/platform/soc/d4000000.apb/d4035000.spi/spi_master/spi1/spi1.0/driver_override

 

-bash: /sys/devices/platform/soc/d4000000.apb/d4035000.spi/spi_master/spi1/spi1.0/driver_override: No such file or directory

 

I've tried to play around with the configuration in flashrom, but no luck. I'm assuming that the problem is a PEBKAC, so I figured it was time to get some help.

 

Does anyone have any suggestions?

 

Thanks!

 

zog

 

 

 

[LtStaffel]

Either the file exists and you do not have permissions to write to it, or one of the directories in that tree does not exist. I'm guessing it is the latter case and that you copy and pasted that line, which was correct at some point but now one of the numbers in the directory names changed or something like that. Start at /sys/ and go down through the directory chain until you find the one that does not exist, and then try to figure out which one DOES exist now that you can use instead. Hope that made sense

[zogthegreat]

@LtStaffel,

 

Thanks for the help. It turns out that somehow or other, I was running the instructions in the wrong order.... in other words, PEBKAC!