Linux-omap-open-source Digest, Vol 21, Issue 52

1. cat endoftheworld > /dev/dsp
This gives me the error "No such device"
Thus, I am not able to use Audio on the board.
So can anybody please tell where I am wrong. Has anybody successfully made Audio working on board?
I desperately need help. so please reply soon.

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Today's Topics:

1. Audio driver on OMAP 1510 Innovator with MontaVista Linux (Madhu Punjabi)

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Message: 1
Date: Mon, 30 Jan 2006 07:16:40 -0800 (PST)
From: Madhu Punjabi <[email protected]>
Subject: Audio driver on OMAP 1510 Innovator with MontaVista Linux
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=iso-8859-1

Hi,
I am new to arm. I am trying to enable Audio on MontaVista Linux 2.4.20 on my OMAP 1510 Innovator board. So please be patient in reading the following and answering for the same. I am having the following hardware:
1. OMAP 1510 Innovator board
2. JTAG
3. Serial cable connected to COM1 on my PC.
I am using the following software/tools:
1. Redhat linux 7.2 on my Build PC
2. MontaVista Linux 2.4.20
3. Prebuilt rrload image used as bootloader for Omap 1510 Innovator board
4. Prebuilt arm_v4t_le- toolchain on my Build PC
5. minicom as a terminal program which in turn is using the serial cable connected to my PC.
I am using the following steps for building MontaVista linux-kernel image for OMAP 1510
Innovator:
1. cd mvlcee-2.4.20
2. make ARCH=arm CROSS_COMPILE=/opt/mvlcee/devkit/arm/v4t_le/bin/arm_v4t_le- menuconfig
Here, in the "Menu" I select the "Sound" menu, where I make the following changes:
a. For the "Omap Sound Drivers" submenu I select the "Allow DSP to control Audio McBSP" option for configuration
3. make ARCH=arm CROSS_COMPILE=/opt/mvlcee/devkit/arm/v4t_le/bin/arm_v4t_le- dep
4. make ARCH=arm CROSS_COMPILE=/opt/mvlcee/devkit/arm/v4t_le/bin/arm_v4t_le- vmlinux
5. ./../rrload/mkimage --LAddr 0x10008000 --EAddr 0x10008000 vmlinux vmlinux.rr
This gives me the vmlinux.rr file to be put on the board using rrload.
I am using rrload as bootloader. My Minicom terminal program shows me the rrload prompt:
Here are I am using the following steps to download the kernel image:
1. Boot arguments are set as follows:
console=ttyS0,115200n8 nointrd root=/dev/nfs rw ip=bootp
nfsroot=10.41.1.73:/opt/mvlcee/devkit/arm/v4t_le/target,nolock
2. I then burn the kernel image vmlinux.rr to Flash.
I am then able to boot the kernel successfully.
Here I am testing the sound device as follows:
1. cat endoftheworld > /dev/dsp
This gives me the error "No such device"
Thus, I am not able to use Audio on the board.
So can anybody please tell where I am wrong. Has anybody successfully made Audio working on board?
I desperately need help. so please reply soon.
--Riya

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End of Linux-omap-open-source Digest, Vol 21, Issue 52
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