All Categories:
Technical Questions of SMARC T335X Linux Development
- I'm trying to use SPI master capability of SMARC-T4378.
HW setup
1. SMARC-T4378
2. EVK-STD-CARRIER with populated second ETH
3. oscilloscope monitoring at carrier board SPI0.0 SPI0.1 SPI1.0 SPI1.1
SW
Many combination tried
-The standard kernel from delivered SDCARD
- Self build kernel from embedian GIT - it seems that SPI master is enable by default. McSPI is also enabled when I check with menuconfig
- arago rootfs tar.gz downloaded from embedian.
In user space I can see /dev/spidev2.0 /dev/spidev2.1 /dev/spidev3.0 /dev/spidev3.1
Write to this devices from C returns no error but I dont see any activity on EVM_STD_CARRIER SPI connectors.
Comments, suggestion, remarks are welcome.
Thanks in advance,
Mirtcho Maglijanov
(24949 views) - Kernel version?
What kernel version do you suggest to use?
(24973 views) - How can I check status of pinmux of some AM335x pin?
(51580 views) - LCD resolutions:
How could I change the LCD resolutions and other parameters?
(14426 views) - USB WiFi Dongle Driver: I'm not able to build the RTL8192C USB module driver. I need a module (.ko) file that I can load into the kernel to support my WiFi USB device.
(43700 views) - GPIO device busy error:
We are having trouble accessing the GPIO on the SMARC carrier board from the kernel v3.2. Are they somehow disabled?
# echo 7 > /sys/class/gpio/export
that gives me the device busy error.
(29136 views) - Firmware Preload:
When we reach production, and are ordering the SMARC modules from you, will they come pre-loaded with U-boot? Or should we be preparing the capability to connect to the JTAG on the module?
(26964 views)
Technical Questions of SMARC T335X Linux Development