OMAP35x LowPower Demos v3.01.00.06 releaseNotes

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Introduction

This is the first release of Power demos showcasing low power usage based on the PSP 3.x GIT based release. This release consists of Audio playback demo on the PSP kernel modified to use lower power. The measurements are done for the AAC decoder.

System Requirements

System Requirements should be similar to the DVSDK demos. Refer DVSDK Release Notes for DVSDK System Requirements

Installing OMAP3x Power Demos

Execute the powerdemos_3_01_00_06 installer to your host machine by specifying the install location

$./powerdemos_setupLinux_3_01_00_06.bin

Uninstall OMAP3x Power Demos

Uninstall the power demos from installed location

$cd /home/<user_acct>/dvsdk_#_##_##_##

$rm -rf powerdemos_3_01_00_05

Release Contents

S.NO	Folder	Contents
1	powerdemos_3_01_00_06\omap3x\audiodecode	Application source code
2	powerdemos_3_01_00_06\omap3x\binaries	Pre-build codec server, application executable and kernel module loading, unloading scripts
3	powerdemos_3_01_00_06\omap3x\binaries\kernelmodules\prebuilt_default	Prebuilt default configured kernel modules
4	powerdemos_3_01_00_06\omap3x\binaries\kernelmodules\prebuilt_min	Prebuilt minimum kernel configured kernel modules
5	powerdemos_3_01_00_06\omap3x\binaries\targetfs	Pre-built nfs, jffs2 images and corresponding Makefile
6	powerdemos_3_01_00_06\omap3x\binaries\kernelmodules\prebuilt_min	omap3_evm_minconfig is the sample minimum kernel configuration file
7	powerdemos_3_01_00_06\omap3x\audiodecode	pwr_optimal_setting_audio.sh is a script for executing the demo
8	powerdemos_3_01_00_06\docs\omap3x	Power demos documents

Dependent Component Version Details

S.NO	Component	Version
1	Target Linux Software	AM35x-OMAP35x-PSP-SDK-03.00.01.06
2	DVSDK	DVSDK_03_01_00_08
3	Power demos	POWERDEMOS_3_01_00_06
4	ARM tool chain	arm-2009q1-203-arm-none-linux-gnueabi-i686-pc-linux-gnu
5	Target file system	AM35x-OMAP35x-PSP-SDK-03.00.01.06

Evaluation Steps

1. Use nfs_power_3_01_00_##.tar.gz image located under powerdemos_3_01_00_06\omap3x\binaries\targetfs for network file system.

Refer this for exporting a shared file system

2. For stand alone purpose use rootfs_power_3_01_00_##.jffs2 file system which is under powerdemos_3_01_00_06\omap3x\binaries\targetfs

Refer this for flashing JFFS2 image

3. Run the demo after bootup

$cd /opt/power/omap3530

$./loadmodules.sh

$./pwr_optimal_setting_audio.sh

Enter AAC file location: data/sounds/davincieffect_LC.aac

Note: NFS and JFFS2 images are created with minimum kernel configured kernel modules. Use minimum kernel configured uImage for booting up the board. Pre-built uImage under powerdemos_3_01_00_06\omap3x\binaries\kernelmodules\prebuilt_min

Change Log

Latest power demos version 3.01.00.06 is validated against AM35x-OMAP35x-PSP-SDK-03.00.01.06 and DVSDK_03_01_00_08.

Defects Fixed in this Release

NA

Known Issues

SDOCM00071069: Unable to run power demos out of the box