This page contains details about the latest kernel branch and any known quirks/special requirements.
It will be periodically updated to keep up to speed with the latest.
The current branch tracking mainline 3.16
Status of Linux Kernel Drivers
|Device Tree||Mostly||Parsed on boot, but compiled into the kernel. Would be good to allow it to be passed from the bootloader.|
|DMA||Mostly||Works, just missing priority support|
|PinCtrl||Mostly||Functional, may need DT binding changes based on feedback from upstream|
|Power Controller (LPCR Register)|
|Power Off & Reset||Works|
|ADC||WIP||Check branches on https://github.com/ZubairLK/CI20_linux|
|Audio (ALSA)||WIP||Check patches on https://groups.google.com/forum/#!forum/mips-creator-ci20-dev|
|HDMI||WIP||Check patches on https://groups.google.com/forum/#!forum/mips-creator-ci20-dev|
|USB(OTG)||Works||Upstream driver supports only host mode as of 3.15|
|Wifi||WIP||Check patches on https://groups.google.com/forum/#!forum/mips-creator-ci20-dev|
|BT||WIP||Check branches on https://github.com/ZubairLK/CI20_linux|
List of other possible issues
- /etc/init.d/iw8103 is the startup script for the BT/Wifi firmware in the default rootfs.
If using 3.16, the script can cause the boot to hang. Please move the script out of /etc/init.d
- bootargs are not passed from u-boot but via DT as of commit 91af30879aae68a8b2f22f54651a85057d3b6457 Add DT nodes for regulator.
Add "root=/dev/mmcblk0p1 rootwait" to bootargs in ci20.dts if you wish to boot a rootfs from mmc until this is patched.