AM335x-PSP 04.06.00.07 Release Notes

Content is no longer maintained and is being kept for reference only!

AM335x-PSP 04.06.00.07 Release Notes

Linux PSP

AM335x PSP 04.06.00.07

Content is no longer maintained and is being kept for reference only!

Release Notes

Release Date:  March 26, 2012

Read This First

The kernel sources packaged in this release do not have the required PM firmware binary already copied in the firmware/ folder of the kernel sources. Due to this building the kernel using the default kernel configuration will fail with this error:

 MK_FW   firmware/am335x-pm-firmware.bin.gen.S
make[2]: *** No rule to make target `firmware/am335x-pm-firmware.bin', needed by `firmware/am335x-pm-firmware.bin.gen.o'.  Stop.
make[1]: *** [firmware] Error 2
make: *** [uImage] Error 2

To resolve this, after you untar the kernel sources, copy the firmware binary into the firmware/ folder of kernel sources

$ cd <topdir>/AM335X-LINUX-PSP-04.06.00.07/src/firmware
$ tar xf pm-firmware-04.06.00.07.tar.gz
$ cp pm-firmware-04.06.00.07/bin/am335x-pm-firmware.bin ../../src/kernel/linux-04.06.00.07/firmware

Then, continue with the kernel build procedure as documented in User's Guide. This issue will be resolved with the next release.

Introduction

This is Release 04.06.00.07 of AM335x Linux PSP. This release supports BeagleBoard Bone and AM335x Evaluation Module version 1.1A and above.

The Linux PSP serves to provide a fundamental software platform for development, deployment and execution of Linux based applications on Texas Instruments silicon. The Linux kernel and U-Boot software in this release are based on the following open source repositories:

Component	Version	Base Repository	Base Tag (or commit id)
Linux Kernel	v3.2	http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap.git;a=summary	6489f6de3a219dfd23a91261eea1b09fba7ae128
U-Boot	2011.09	http://git.denx.de/?p=u-boot.git;a=summary	v2011.09

The code base for Linux kernel, U-Boot and power management firmware included in this release is hosted at the following repositories:

Component	Repository & Branch	Release Tag
Linux Kernel	http://arago-project.org/git/projects/?p=linux-am33x.git;a=shortlog;h=refs/heads/AM335XPSP_04.06.00.07 (The kernel obtained directly from the above repository needs PM firmware to build when building using default configuration. Link to PM firmware repository containing the firmware binary is available below in this table. Copy the firmware binary .bin file into the firmware/ folder of the kernel sources)	v3.2_AM335xPSP_04.06.00.07
U-Boot	http://arago-project.org/git/projects/?p=u-boot-am33x.git;a=shortlog;h=refs/heads/AM335XPSP_04.06.00.07	v2011.09_AM335xPSP_04.06.00.07
Power Management Firmware	http://arago-project.org/git/projects/?p=am33x-cm3.git;a=shortlog;h=refs/heads/AM335XPSP_04.06.00.07	AM335xPSP_04.06.00.07

Obtaining the Release Package

The PSP release package can be obtained from TI's Technology and Software Publicly Available (TSPA) download site.

Dependencies

Tool/Component	Description	Release Version	Required for
Code Composer Studio (CCS)	IDE and ARM compiler	5.1.0.09000	Building CCS based flash writers
Arago Toolchain	GCC ARM cross compiler	2011.09 (GCC 4.5.3)	Building Linux kernel, U-Boot, Linux examples
Filesystem	Target filesystem	NA	Linux boot

Documentation

The User's Guide provides instructions on how to use the PSP Release package.

The AM335x-PSP 04.06.00.07 Features and Performance Guide provides information on various device driver features and provides performance numbers.

What's Supported

The Linux PSP package supports the following components:

• SPL and U-Boot supporting NAND and MMC/SD boot modes
• Linux Kernel v3.2 and device drivers

Linux support for various devices on EVM (Rev 1.1A)

Peripheral	Instance	Support Status
UART	UART0	Supported.
	UART1	Supported in SDK using Bluetooth module
	UART2	Supported
	UART3	Planned
	UART4	Planned
	UART5	Planned
Ethernet Switch	CPSW0	Supported. Some advanced features are planned, please see features and performance guide for missing features.
SPI	SPI0	Supported
	SPI1	Not available in EVM
I2C	I2C0	Supported
	I2C1	Supported
McASP	McASP0	Not available in EVM
	McASP1	Supported
DCAN	DCAN0	Not available in EVM
	DCAN1	Supported
EDMA	EDMA0	Supported
Timer	Timer0	Not Tested (Not used in Linux)
	Timer1	Supported (Schedule Tick)
	Timer2	Supported (Clocksource)
	Timer3	Not Tested (Not used in Linux)
	Timer4	Not Tested (Not used in Linux)
	Timer5	Supported (CPSW Interrupt pacing)
	Timer6	Supported (CPSW Interrupt pacing)
	Timer7	Not Tested (Not used in Linux)
	Watchdog timer	Supported
RTC	RTC0	Supported
ePWM	eHRPWM0	Not available in EVM
	eHRPWM1	Not available in EVM
	eHRPWM2	Supported (used by Haptics module on EVM)
	eQEP0	Not available in EVM
	eQEP1	Not available in EVM
	eQEP2	Not available in EVM
	eCAP0	Supported in PWM mode (APWM), used as LCD backlight control. Capture mode not supported.
	eCAP1	Not available in EVM
	eCAP2	Not available in EVM
Touchscreen/ADC	TSCADC0	Touchscreen supported, Raw ADC not supported.
MMC/SD	MMC/SD0	Supported
	MMC/SD1	Supported (Profile 2)
	MMC/SD2	Not available in EVM
GPIO	GPIO0	Supported
	GPIO1	Supported
	GPIO2	Supported
	GPIO3	Tested using WLAN/Bluetooth in SDK
USB	USB0	Supported
	USB1	Supported
GPMC	GPMC0	NAND is Supported, NOR is planned.
LCD Controller	LCDC0	GLCD is supported, Character LCD is not supported in EVM

Linux support for EVM (Rev 1.1A and above) specific components

Peripheral	Support Status
Accelerometer	Supported
Ambient Light Sensor	Supported
Temperature Sensor	Supported
Haptics	Supported
GPIO keypad	Supported

Linux support for various IPs on BeagleBone (Rev A3)

Peripheral	Support Status
UART0	Supported.
Ethernet Switch	Supported. Some advanced features are planned, please see features and performance guide for missing features.
MMC/SD0	Supported.
USB0	Supported.
USB1	Supported.

Other Linux Features

Feature	Support Status
Power Management (CPU Idle)	Supported
Power Management (CPU Freq)	Supported
Power Management (Suspend-to-RAM)	Supported

• CCS based NAND flash writers.
• Linux examples.

The PSP package also includes:

• Pre-built binaries for U-Boot, Linux kernel, flash writers and examples
• Relevant Documents

New in this Release

• Suspend-to-RAM support

Fixed in this Release

This section lists issues fixed in this release:

Issue Identifier	Issue Headline
SDOCM00085673	USB File storage gadget: instability when pendrive connected to host port exposed as storage media from gadget port to PC
SDOCM00085737	After soft reboot, dhcp or tftp sometimes timeout in uboot
SDOCM00087173	AM335x: MassStorageGadget: Issues when MMC card is used as storage media or gadget port
SDOCM00089687	Regulator is not set for mmc1 in profile 2
SDOCM00089790	AM335x: McASP 0 AXR3 Pin mux-mode details not as per pin-mux sheets

Known Issues

This section lists known issues in this release.

Base Port

This section notes issues with U-Boot and basic kernel board support.

Issue Identifier	Issue Headline	Known Workaround(s)
SDOCM00085443	WDT1 timeout inaccurate.	None
SDOCM00086716	HWMOD warnings upon doing WDT file operations	The warning is harmless and can be ignored.
SDOCM00086508	U-Boot doesn't work when profile switch is set to 3	None
SDOCM00089686	U-Boot does not support booting from MMC/SD1	Please use MMC/SD0 for booting
SDOCM00085737	After soft reboot, dhcp or tftp sometimes timeout in U-Boot.	Power cycle the board (hard reboot).
SDOCM00091114	AM335x: Mux - debugfs provides wrong value.	None.

Power Management

Issue Identifier	Issue Headline	Known Workaround(s)
SDOCM00087097	cpu_idle reports wrong power consumption numbers for WFI and DDR SR states	None
SDOCM00089584	cpufreq: Unable to change OPP in AM335x evm	This issue is because of misbehavior of I2C client contained inside the CPLD on the EVM. BeagleBone can be used to test CPUFreq on AM335x. BeagleBone does not have a CPLD and does not suffer from the same limitation as the EVM.
SDOCM00090470	Suspend/Resume during MMC/SD write using dd with large block size write causes the file write to not complete	Please use "sync" command before suspending to avoid losing data. Also, please use small block size (eg 512/1024 bytes) for transfer if there is chance of system going to suspend while transfer is going on.
SDOCM00090946	Sometimes suspend attempt may be aborted if there is an ongoing MMC/SD transfer while suspend is attempted.	User should re-attempt the suspend command.
SDOCM00090689	AM335x: USB: aplay/arecord exit with error if system is suspended while playback/recording is ongoing	This issue is because of limitation of USB audio stack in Linux and can be observed on a PC too. Please wait for USB audio to finish before suspending or alternately, retry the audio operation after resume completes.
SDOCM00090962	Resume operation fails on some beaglebone boards	On the boards which exhibit this issue, the behavior is pretty consistent. On boards which do not exhibit this issue, the issue never comes up even in extended testing. There is no known workaround for the failing boards.
SDOCM00090692	USB: IO Error observed when copying files from USB device to another USB device connected to the same port with suspend/resume operation.	None.
SDOCM00091071	AM335x: Suspend-to-RAM does not reduce core voltage	None.
SDOCM00091498	AM335x: cpuidle C2 state is not entered	None.
SDOCM00091330	AM335x: i2cdetect throw timeout errors and after that dut hangs after soft reboot	On the EVMs where this issues comes up, i2c usage in suspend-resume via cpufreq should be avoided by disabling cpufreq in the kernel.

USB

Issue Identifier	Issue Headline	Known Workaround(s)
SDOCM00085670	USB: NFS stops working when CDC/RNDIS gadget module is inserted with Arago FS	None. This is being tracked as a filesystem issue. http://arago-project.org/cgi-bin/bugzilla3/show_bug.cgi?id=11
SDOCM00085673	USB File storage gadget: instability when pendrive connected to host port exposed as storage media from gadget port to PC	None
SDOCM00087173	USB: MassStorageGadget: Issues when MMC card is used as storage media or gadget port	None
SDOCM00087229	USB: PIO mode read performance numbers are almost 50% less as compared to that of DMA mode read performance	Use DMA mode of operation if performance is critical. There are some outstanding issues with DMA mode, please go through the rest of this table for information regarding them.
SDOCM00087342, , SDOCM00089599	USB: CPPI4.1 DMA locks up when CPU mode transfer is done in parallel to DMA transfer. Sometimes USB resets are seen.	Use PIO mode when there is possibility of control transfer in parallel to DMA transfers. Such as when using WiFi and mass storage together or when connecting and disconnecting devices connected to a hub port when DMA transfers are active on another port. Please refer to USB User's Guide for detail on how to enable PIO mode.
SDOCM00089422	USB Wifi driver can not be initialized on AM335x EVM (works on BeagleBone)	None
SDOCM00090690	AM335x-USB audio: Corrupted audio heard after pause.	None
SDOCM00088841	USB capture: USB video capture is not working for 640x480 resolution and exits with the message "select timeout"	Please use lower resolutions (320x240)
SDOCM00089374	USB: High cpu loading with CDC gadget when connected to another EVM or local loopback	None
SDOCM00089782	USB command verifier (CV) test fails	None

MMC/SD

Issue Identifier	Issue Headline	Known Workaround(s)
SDOCM00085738	mmcsd write performance is very low when card is mounted as sync.	It is highly recommended to use async mode for good MMC/SD performance
SDOCM00085770	MMC 8bit is not supported.	None
SDOCM00085920	Beaglebone: multiple times of insert/remove mmc modules with R/W operation cause dut hanging	Give a delay of 3 sec (# sleep 3s) between Module removal & Module insertion.
SDOCM00087204	EVM: write protection for mmc1 in daughter board doesn't work	None
SDOCM00089663	SD card removal results in noise during ALSA playback/loopback	None
SDOCM000090498	MMC: hsmmc driver doesnt support 1.8v MMC cards	None
SDOCM00090756	MMC1: One SD card could not be used as rootfs when in slot1; The same card works in slot0	This issue happens with one card at the moment and needs further debug.
SDOCM00090970	MMC1 in profile 2: some SD or MMC cards cause DUT to hang	None

NAND

Issue Identifier	Issue Headline	Known Workaround(s)
SDOCM00086033	Nand mtdtest oob test and subpage test fail.	None
SDOCM00090530	Nand performance in this release is lower than the previous (04.06.00.06) release.	None

Audio

Issue Identifier	Issue Headline	Known Workaround(s)
SDOCM00086121	ALSA: Audio loopback prints error messages	The warnings are harmless and can be ignored.
SDOCM00089719	ALSA audio capture-playback loopback fails when driver is built as module	Please use ALSA as a driver built into the kernel and not as module
SDOCM00089663	SD card removal results in noise during ALSA playback/loopback	None
SDOCM00088830	ALSA: arecord: Unable to capture audio at exact 24KHz sample rate	None

Ethernet

Issue Identifier	Issue Headline	Known Workaround(s)
SDOCM00086213	Running ethtool doesnt provide complete information	None
SDOCM00086066	Ethernet: MAC address configuration is not supported in kernel	None
SDOCM00086717	EVM: NFS: arecord takes longer than expected time to record file to NFS filesystem	None
SDOCM00085982	Beaglebone: UDP client performance at 100Mbps and the throughput is less than 1 Mbps	None
SDOCM00090654	AM335x: Ethernet: Kernel crash and DUT hang observed when removing Ethernet module	Please use ethernet driver as statically built into the kernel

UART

Issue Identifier	Issue Headline	Known Workaround(s)
SDOCM00085586	UART: hardware flow control is not working	This is an issue because of mis-configuration of CPLD present on EVM. The UART driver is expected to work correctly with flow-control. Bluetooth module on EVM used UART flow control successfully.

I2C

Issue Identifier	Issue Headline	Known Workaround(s)
SDOCM00087207	I2C controller timeout for some slave devices connected on i2c1 at 400KHz	Operating at 100Khz does not cause these timeouts.

Haptics

Issue Identifier	Issue Headline	Known Workaround(s)
SDOCM00091115	AM335X: HAPTICS doesn't work on all board revisions	update CPLD to version 1.0E or later.

Installation and Usage

Please look for detailed installation and usage instructions in the AM335x PSP User's Guide

Upgrade and Compatibility Information

There are no known incompatibilities from previous release.

Technical Support and Product Updates

For further information or to report any problems, contact http://community.ti.com or http://support.ti.com.

OMAP Linux Mailing List: http://vger.kernel.org/vger-lists.html#linux-omap