AM18x/OMAP-L138 driver status on Linux v3.x

Important Note:

The software discussed on this site is available for download, but is no longer being actively developed and maintained. This wiki is in maintenance mode and the software is supported on Sitara E2E forum

AM18x/OMAP-L138 Driver status

Peripheral	Functionality(arago, Linux v3.3-davinci1)	Mainline		CPU Freq(arago)	CPU Freq(mainline)	Suspend/Resume(arago)	Suspend/Resume(mainline)	Comments
		Functionality in non-DT kernel	DT support for the module
Audio (McASP)								McASP is always slave.
McBSP								Not supported as there are no devices connected to McBSP.
EMAC								CPUfreq patches submitted to community http://lkml.indiana.edu/hypermail/linux/kernel/1204.1/00281.html. Need work on review comments.
MUSB MSC Host								Community kernel dependent on platform patches to get PIO/DMA mode working. Bug fixes on CPPI DMA are pending to get DMA mode working.
MUSB HID Host								Community kernel dependent on platform patches to get PIO/DMA mode working. Bug fixes on CPPI DMA are pending to get DMA mode working.
MUSB Audio Host								Community kernel dependent on platform patches to get PIO/DMA mode working. Bug fixes on CPPI DMA are pending to get DMA mode working.
MUSB Video Host								Community kernel dependent on platform patches to get PIO/DMA mode working. Bug fixes on CPPI DMA are pending to get DMA mode working.
MUSB CDC Host								Community kernel dependent on platform patches to get PIO/DMA mode working. Bug fixes on CPPI DMA are pending to get DMA mode working.
MUSB WiFi Host								Community kernel dependent on platform patches to get PIO/DMA mode working. Bug fixes on CPPI DMA are pending to get DMA mode working. Functionality not tested in arago, it is expected to work.
MUSB MSC Gadget								Community kernel dependent on platform patches to get PIO/DMA mode working. Bug fixes on CPPI DMA are pending to get DMA mode working.
MUSB CDC/RNDIS Gadget								Community kernel dependent on platform patches to get PIO/DMA mode working. Bug fixes on CPPI DMA are pending to get DMA mode working.
OHCI MSC Host								Community Kernel dependent on platform patches. Need to work on review comments on submitted patch http://www.spinics.net/lists/linux-usb/msg59656.html
OHCI HID Host								Community Kernel dependent on platform patches. Need to work on review comments on submitted patch http://www.spinics.net/lists/linux-usb/msg59656.html
OHCI Audio Host								Community Kernel dependent on platform patches. Need to work on review comments on submitted patch http://www.spinics.net/lists/linux-usb/msg59656.html
NAND Flash								CPUFreq and Suspend/Resume patches present in arago.
NOR Flash								NOR driver doesn't require suspend and resume functions, according to this patch its taken care by the core, http://lists.infradead.org/pipermail/linux-mtd-cvs/2009-May/006486.html
GLCD
CLCD								Some attempts were made to push this driver upstream. http://lists.infradead.org/pipermail/linux-parport/2009-September/000664.html http://lists.infradead.org/pipermail/linux-parport/2009-September/000666.html http://lists.infradead.org/pipermail/linux-parport/2009-September/000665.html http://lists.infradead.org/pipermail/linux-parport/2009-September/000667.html http://lists.infradead.org/pipermail/linux-parport/2009-September/000668.html This needs to be planned for 2Q 2012. CPUFreq patches are available in arago.
SPI
MMC/SD
UART								UART CPUFreq patches were submitted earlier to community but did not make it to mainline http://lkml.indiana.edu/hypermail/linux/kernel/1001.1/01829.html http://lkml.indiana.edu/hypermail/linux/kernel/1001.1/01846.html This needs to be revisited. Patches were ported to AM18x and available in arago. Resubmitted to community. Currently under review.
I2C
RTC								RTC is wake up source on am18x.
Watchdog
SATA
Video Port Interface (VPIF)								Platform patches are also accepted and queued in media tree http://git.linuxtv.org/media_tree.git/shortlog/refs/heads/staging/for_v3.7
VPIF Raw Sensor support
Touchscreen
eCAP								Driver has to be ported to new PWM frame work of community. Current driver in arago follows Bill Gatliff's PWM frame work. Earlier attempt has been made for placing the eCAP driver in drivers/iio folder (http://www.spinics.net/lists/linux-iio/msg04392.html).
eHRPWM/APWM								Driver has to be ported to new PWM frame work of community. Current driver in arago follows Bill Gatliff's PWM frame work.

Legend

	Feature present
	Feature NOT present
	Present but not tested because of dependency.
	Feature NOT required

Supported Boot Modes in arago U-Boot (v2012.04-rc1)

Boot Mode	DA850/OMAP-L138/AM18x	Comments
SPI Flash		SPL SPI U-Boot
NAND Flash		SPL NAND U-Boot
NOR Flash		NOR U-Boot
MMC/SD		SPL is in SPI flash to boot MMC/SD U-Boot

Supported Boot Modes by Community SPL U-boot

Boot Mode	DA850/OMAP-L138/AM18x	Comments
SPI Flash		http://www.mail-archive.com/u-boot@lists.denx.de/msg86207.html
NAND Flash		http://www.mail-archive.com/u-boot@lists.denx.de/msg86207.html
NOR Flash		http://www.mail-archive.com/u-boot@lists.denx.de/msg86207.html
MMC/SD		http://www.mail-archive.com/u-boot@lists.denx.de/msg86207.html

NOTE
These are supported boot modes in PSP software, the actual hardware may support many more boot modes than shown here. Please refer to hardware documentation for list of all supported boot modes.