Intel MID

The Intel Mobile Internet Devices are a discontinued series of SoCs made by Intel. The SoFIA platform was made together with Rockchip.

Mainline support
There seems to be support for Moorefield, Moorestown, Medfield, Merrifield, in. Menlow seems to be based on classic ACPI. SoFIA is unsupported on mainline, but Asus has published a downstream kernel with SoFIA support.

Firmware
Most (if not all) seem to be using the Simple Firmware Interface, which contains some elements of ACPI but is not ACPI compatible. At least Merrifield and Moorefield use SFI according to this config option (because these CPU cores are only used in Merrifield and Moorefield). SFI has been marked obsolete in the Linux kernel due to missing maintainers, but is not yet dropped. SFI was written for Moorestown, but the Linux kernel later renamed Moorestown to Intel MID which includes different SoC series, see https://lkml.org/lkml/2013/10/10/81

Graphics
Merrifield and Moorefield make use of a PowerVR GPU, SoFIA uses a Mali GPU. The Lima driver has not yet been tested on x86, as Mali is normally used on ARM platforms.

Platforms that use PowerVR could benefit from the openpvrsgx project which is upstreaming the kernel modules so the proprietary userspace software can be used on the mainline kernel.

Menlow platform (Silverthorne processor)
Menlow devices *should* be supported because it uses regular ACPI. There might be missing drivers for peripherals.

Moorestown platform (Lincroft processor)

 * Cisco Cius
 * Samsung Sliding PC 7
 * HP Slate 2: Ubuntu works, but slow due to PowerVR
 * Wortmann Terra Mobile Pad 1051
 * Wortmann Terra Mobile Pad 1080
 * Fujitsu Stylistic Q550 (Z670, product sheet lists also Z690 but is probably a typo as it does not have an Intel Ark entry). Some Gentoo user noted that there are some problems with power management: the backlight doesn't turn off and the tablets runs quite hot: https://forums.gentoo.org/viewtopic-p-7056608.html
 * ViewSonic ViewPad 10Pro

Medfield platform (Penwell processor)

 * Intel ECS TM75A
 * Intel ECS TM105A
 * Asus FonePad

Merrifield platform (Tangier processor)

 * Dell Venue 7 (Z3460, some sources claim a different core, I'm not really sure)
 * Dell Venue 3840 8 (Intel Z3480, different from Moorfield platform version)

Moorefield platform (Anniedale processor)

 * Asus ZenPad S 8.0 (Z580C)
 * Asus Fonepad 7 (FE375CXG)
 * Asus Zenfone 2 (ZE551ML, Z3560)
 * Asus Memo Pad 7 (ME572C) (which is a different model from the other Memo Pad 7 listed on this wiki)
 * Asus Memo Pad 8 (ME581C)
 * Asus ZenPad 10 (Z300CNL)
 * Nokia N1
 * Dell Venue 8 (Intel Z3580, different from Merrifield platform version)
 * Asus Zenfone Zoom (ZX551ML)

SoFIA platform (x3-C3xxx processor)

 * Asus ZenPad 10 (Z300CG)
 * Asus ZenPad 8.0 (Z380C)
 * Asus ZenPad 7.0 (Z370C)
 * TrekStor SurfTab Theatre 13.3
 * TrekStor SurfTab breeze 9.6 quad
 * TrekStor SurfTab xintron i 10.1 3G
 * eSTAR GO!

Cloverview
Cloverview seems to have regular ACPI, but the same debugging capabilities as MID platforms: https://www.spinics.net/lists/platform-driver-x86/msg03871.html