APF28 Linux kernel status
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The APF28 Linux distribution can be found here: latest stable installation tarball from SourceForge
Current version
Currently (in armadeus-5.3-devt-git) supported Linux versions are: Freescale's 2.6.35.3 (version by default) and mainline/vanilla 3.7 (which requires some special instructions).
- NT = Not Tested
- NA = Not Available / Not possible
APF28 (~ i.MX28 internal controllers)
| Freescale's 2.6.35 | Mainline 3.7 | ||||||||
| Driver | Compiling ? Static / Module |
Working ? | Comments | Compiling ? Static / Module |
Working ? | Comments | |||
|---|---|---|---|---|---|---|---|---|---|
| NAND Flash | OK | NA | OK | Boot linux + rootfs | OK | NA | OK | Boot linux + rootfs | |
| DUART | OK | OK | OK | console (ttyAM0) | OK | NA | OK | console (ttyAMA0) | |
| Ethernet | OK | NA | OK | Ethernet 0 | OK | NA | OK | Ethernet 0 | |
| RTC | OK | OK | OK | internal RTC | OK | NT | OK | internal RTC | |
| PM | OK | NA | OK | use standby mode | NT | ||||
| Battery | OK | OK | NT | NT | |||||
| Watchdog | OK | OK | OK | internal Watchdog | NT | ||||
| Security/DCP | OK | OK | OK | tested with tcrypt module | NT | ||||
APF28Dev development baseboard
- NT = Not Tested
- NA = Not Available / Not possible
| Freescale's 2.6.35 | Mainline 3.7 | ||||||||
| Driver | Compiling ? Static / Module |
Working ? | Comments | Compiling ? Static / Module |
Working ? | Comments | |||
|---|---|---|---|---|---|---|---|---|---|
| SPI | OK | NT | OK | OK | OK | OK | Tested with spidev and in-kernel drivers | ||
| I2C | OK | NT | OK | OK | OK | OK | Can't use SMBus Quick Write on bus 0 | ||
| MMC/SD/SDIO | OK | NT | OK | OK | OK | OK | |||
| AUART | OK | OK | OK | NT | NT | NT | |||
| Ethernet (1) | OK | NA | NT | 2nd optionnal Ethernet port | OK | NA | NT | 2nd optionnal Ethernet port | |
| USB OTG | OK | OK | OK | OTG and DR modes | NT | NT | NT | ||
| USB HOST | OK | NT | OK | OK | NT | OK | (ChipIdea driver) | ||
| ADC (LRADC) | OK | OK | OK | OK | NT | NT | |||
| ADC (HSADC) | NT | NT | NT | NT | NT | NT | |||
| PWM | OK | OK | OK | OK | NT | OK | used by backlight | ||
| LCD | OK | NT | OK | OK | NT | OK | |||
| Backlight | OK | OK | OK | OK | NT | OK | uses PWM driver | ||
| LW700 LCD | OK | NT | OK | OK | NA | OK | |||
| MT035 LCD | OK | NT | OK | remove linux patch 459 with apf28dev boards rev1 |
NT | NT | NT | ||
| Touchscreen | OK | OK | OK | NT | NT | NT | |||
| PXP | OK | NT | NT | NT | NT | NT | |||
| Digital Audio | OK | OK | NT | NT | NT | NT | |||
| CAN Bus | OK | OK | ~OK | bitrate changing from userspace not functionnal ! | NT | NT | NT | ||
| User LED | OK | NT | OK | GPIO_LEDS | OK | NT | OK | GPIO_LEDS | |
| User Button | OK | OK | OK | GPIO_keys, can wakeup the board from standby mode |
NT | NT | NT | GPIOlib | |
| Power Button | OK | NT | OK | OK only when the system is powered by a battery. The board reboots automatically when powered by 5V or USB. That's a chipset feature that cannot be disabled. |
NT | NT | NT | ||
