From Texas Instruments Embedded Processors Wiki

Contents 1 Overview 1.1 Conventions 1.2 Boards 2 mach-davinci 2.1 Status 2.2 To Do 3 Ethernet 3.1 Status 4 Audio 4.1 Status 4.2 To Do 5 Video Display 5.1 Status 5.2 To Do 6 Video Capture 6.1 Status 6.2 TO DO 7 IPIPE - Previewer/Resizer 7.1 Status 7.2 TODO 8 H3A - AEW/AF 8.1 Status 8.2 TODO 9 VDCE 9.1 Status 9.2 TO DO 10 I2C 11 UART 12 USB Host 12.1 Status / To Do 13 USB Gadget 13.1 Status / To Do 14 USB OTG 14.1 Status / To Do 15 NAND 15.1 Status 15.2 TODO 16 SPI 16.1 Status 16.2 TODO 17 PCI Host 17.1 Status 17.2 TODO 18 MMC/SD 18.1 Status 18.2 To Do 19 EDMA 19.1 To Do 20 Graphical LCD 20.1 Status 21 Character LCD 21.1 Status 22 RTC 22.1 Status 23 Power Management 23.1 CPU Freq 23.1.1 Status 23.1.2 To Do 23.2 CPU Idle 23.2.1 Status 23.3 Suspend-to-RAM support 23.3.1 Status 23.3.2 To Do 24 uPP (Universal Parallel Port) 24.1 Status 25 SATA 25.1 Status 26 eQEP 26.1 Status 27 eCAP 27.1 Status 28 HRPWM 28.1 Status

Overview

The Linux support for the DaVinci family of processors is maintained in the linux-davinci GIT tree. Patches are sent upstream from this tree to the mainline (Linus') kernel regularly. This topic describes what is in the DaVinci kernel tree and corresponding status for each device and/or peripheral.

Location

GIT - git://gitorious.org/linux-davinci/linux-davinci.git

Web - http://gitorious.org/linux-davinci

Maintainer

Sekhar Nori (nsekhar@ti.com)/Kevin Hilman (khilman@ti.com)

Email List

Address - davinci-linux-open-source@linux.davincidsp.com

Info and Archives - http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source

Recommended Compiler Toolchain

CodeSourcery GNU Toolchain for ARM Processors: 2009q1-203 version - http://www.codesourcery.com/sgpp/lite/arm/portal/release858

Sample Target Filesystem (used by TI for testing)

Arago Project (OpenEmbedded-based project) - http://arago-project.org

Conventions

The sections below cover the major subsystems of the SoCs. A simple color-coding indicates the status, using the following approximate definitions:

• Red - not functional
• Yellow - functional, but incomplete or known bugs
• Green - functional, only minor bugs, if any
• Gray - not applicable

In addition, there is a column labeled "Mainline" which indicates how close the code is to being ready for acceptance in the mainline kernel.

• Red - lots of cleanup needed and/or no one working on it
• Yellow - cleanup needed but somebody is working on it
• Green - either ready to be submitted or already in mainline

Boards

The following boards are used for development and testing by TI.

• DM644x - DaVinci DM6446 DVEVM
• DM6467 - DaVinci DM6467 DVEVM
• DM355 - DaVinci DM355 DVEVM
• DM365 - DaVinci DM365 DVEVM
• DA830/OMAP-L137 - OMAP-L137/TMS320C6747 Floating Point Starter Kit
• DA850/OMAP-L138 - OMAP-L138/TMS320C6748 EVM

mach-davinci

The base level support for the DaVinci processors is in the arch/arm/mach-davinci directory, currently with support for DM644x, DM355, and DM6467.

Area	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Boot
IRQ
DMA
Clocks
GPIO
Timers

Status

To Do

Ethernet

Most DaVinci SoCs have an on-chip Ethernet MAC (exceptions are DM355).

DM355 uses the dm9000 driver from the kernel mainline.

Devices	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status

1. TI DaVinci EMAC driver is now mainline.
2. Support for interrupt pacing is added

Audio

Audio is provided through ALSA-SoC using McBSP/McASP drivers and external audio codecs.

Devices	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status

1. Platform support for Audio on all EVMs is has been accepted in community

To Do

1. Audio support for DA830 Audio daughter card needs to be worked on.

Video Display

Devices	DM644x	DM6467	DM355	DM365	DA850/OMAP-L138	Mainline
Status

Status

• VPBE display (V4L2) for DM644x is being posted for community acceptance. DM355/DM365 device support will come next.
• Board hookup for VPIF driver on DA850/OMAP-L138 needs to be added.
• Manju Hadli at TI currently working on this. Please see: http://git.linuxtv.org/mhadli/v4l-dvb-davinci_devices.git
• Please note: Port of LSP 02.10 display drivers to community kernel is available in linux-davinci staging tree on Arago. This is based on encoder manager & display manager architecture (THS8200 not supported).

To Do

1. push the patches to mainlne.

Video Capture

On DM644x, DM355 and DM365, Video Capture is handled by Video Peripheral Front End (VPFE) and CCDC. CCDC is interfaced with decoders - TVP514x and/or TVP7002 for SD/HD capture. It is also interfaced with Imagers (Camera) for raw capture. On DM6467, Video capture is handled by Video Port Interface (VPIF), which interfaces with decoders - TVP514x and TVP7002. VPIF is also used on DA850/OMAP-L138.

Devices	DM644x	DM6467	DM355	DM365	DA850/OMAP-L138	Mainline
Status

Status

• Supports TVP5146 capture on DM6446, DM355 & DM365.
• Supports TVP7002 driver

Note: following supported in linux-davinci staging tree on arago-project.org (not submitted to community):-

• Support for capture from TVP7002 on DM365 and DM6467
• Support for capture from MT9T031 on DM355 & DM365
• Support for capture from MT9T031 on DM355 & DM365 (on the fly mode mode)
• Support for capture from TVP7002 on DM365 (on the fly mode)

TO DO

1. Minor bug fixes and some cleanup.
2. Submit patches for for mainline.

IPIPE - Previewer/Resizer

Devices	DM644x	DM6467	DM355	DM365	DA850/OMAP-L138	Mainline
Status

Status

• IPIPE (Previewer/Resizer) for DM365 is submitted to community as RFC.DM355 and DM6446 will follow.
• The current arago linux-davinci supports the fully featured driver with one-shot and on-the-fly mode support using Media Controller framework.

TODO

1. Submit the driver to mainline acceptance.

H3A - AEW/AF

Devices	DM644x	DM6467	DM355	DM365	DA850/OMAP-L138	Mainline
Status

Status

• H3A - AEW/AF support is not submitted to community.
• Media Controller and event mechanism based support present on linux-davinci staging tree on arago-project.org

TODO

1. Submit the patches to mainline.

VDCE

Devices	DM644x	DM6467	DM355	DM365	DA850/OMAP-L138	Mainline
Status

Status

1. Interim patch for VDCE driver on DM6467 is maintained in the linux-davinci staging tree on Arago

TO DO

1. For upstream submission, this driver will require updates based on media controller framework

I2C

Devices	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

UART

Devices	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

USB Host

Devices	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status / To Do

1. OHCI and MUSB support need to be added in OMAPL138 board file.
2. CPPI4.1 DMA driver needs to be added for OMAPL1x.
3. USB patches to support DM365 and DM646x needs to be added.
4. CPPI3.0 DMA fine tuning for performance enhancements is pending.

USB Gadget

Devices	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status / To Do

1. MUSB support need to be added in OMAPL138 board file.
2. CPPI4.1 DMA driver needs to be added for OMAPL1x.
3. USB patches to support DM365 and DM646x needs to be added.
4. CPPI3.0 DMA fine tuning for performance enhancements is pending.

USB OTG

Devices	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status / To Do

1. MUSB support need to be added in OMAPL138 board file.
2. CPPI4.1 DMA driver needs to be added for OMAPL1x.
3. USB patches to support DM365 and DM646x needs to be added.
4. CPPI3.0 DMA fine tuning for performance enhancements is pending.

NAND

Devices	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status

1. 4-bit ECC patches accepted into the mtd subsystem
2. Patch submitted to mtd list for 4-Bit ECC error correction issue.

TODO

1. Support for 4K page size NAND devices requires changes to nand_ecclayout structures. Need to bring it up on the linux-mtd list for a generic solution

SPI

Devices	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status

1. SPI driver accepted into Linus's kernel
2. SPI was tested on DM355, DM365 and DM6467 using EEPROMs on the EVMs connected to SPI
3. SPI was tested on OMAP-L138 and OMAP-L137 using EEPROMS on the EVMs connected to SPI

TODO

PCI Host

Devices	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status

1. Aug03 2009: v2 patch set submitted to DaVinci ML for review

TODO

1. Submit boot driver

MMC/SD

Devices	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status

1. Platform support patches for DA830/OMAP-L137 have been merged.

To Do

1. SDIO patches submitted on the mailing list - require updates based on the comments received

EDMA

Devices	DM644x	DM6467	DM355	DM365	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

To Do

1. Naming the event queues wrt priority.
2. Implementing single tc err handler for all the Transfer controllers.
3. Getting the TC err interrupt numbers from platform resources.
4. Getting rid of the n_* fields in struct edma_soc_info with the help of EDMA_CCCFG register.

Graphical LCD

Devices	DM368	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status

1. OMAP-L1 FB driver is present in mainline.

Character LCD

Devices	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status

1. Patch adding dummy parallel port driver to support this has been rejected in LKML. Need to rework based on review received. Basically means cleaning up the panel.c driver before adding new support.

RTC

Devices	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status

1. RTC patch accepted into Linus's kernel.

Power Management

CPU Freq

Devices	DA850/OMAP-L138	Mainline
Status

Status

1. CPUFreq support is present in Linus's tree

To Do

1. Support driver notifications for all affected drivers. LCD and MMC/SD modifications are complete.

CPU Idle

Devices	DA850/OMAP-L138	Mainline
Status

Status

1. CPUIdle support is present in Linus's tree.

Suspend-to-RAM support

Devices	DA850/OMAP-L138	DM355	DM365	Mainline
Status

Status

1. Support for DA850/OMAP-L138 is present in Linus's tree

To Do

1. Support suspend/resume for all drivers. Support Suspend-to-RAM on DM355 and DM365

uPP (Universal Parallel Port)

Devices	DA850/OMAP-L138	Mainline
Status

Status

1. Need to start work on driver development

SATA

Devices	DA850/OMAP-L138	Mainline
Status

Status

1. SATA patches queued in linux-next. Slated to appear in v3.2 kernel

eQEP

Devices	DA830/OMAP-L137	Mainline
Status

Status

1. Driver available in MV Linux. Need to work on submitting patches to input subsystem mailing list.

eCAP

Devices	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status

1. Patches to support APWM on eCAP module submitted to DaVinci mailing list and under review

HRPWM

Devices	DA830/OMAP-L137	DA850/OMAP-L138	Mainline
Status

Status

1. Patches to support PWM control using eHRPWM module submitted to DaVinci mailing list and under review.

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