AnsweredAssumed Answered

SGTL5000 Audio test

Question asked by nishad kamdar on Mar 16, 2014
Latest reply on Mar 19, 2014 by Yuri Muhin

Hi,

 

I have a custom board iMX6 board which has a SGTL 5000 codec. I was able to probe it and it now shows in my /proc/asound directory.

 

However i do not know hoe i test it.

 

Can anyone tell me how i can test my Audio ?

 

Here is my log

 

U-Boot 2009.08 (Mar 16 2014 - 20:41:26)

 

 

CPU: Freescale i.MX6 family TO1.2 at 792 MHz

Thermal sensor with ratio = 179

Temperature:   34 C, calibration data 0x56b4b27d

mx6q pll1: 792MHz

mx6q pll2: 528MHz

mx6q pll3: 480MHz

mx6q pll8: 50MHz

ipg clock     : 66000000Hz

ipg per clock : 66000000Hz

uart clock    : 80000000Hz

cspi clock    : 60000000Hz

ahb clock     : 132000000Hz

axi clock   : 264000000Hz

emi_slow clock: 132000000Hz

ddr clock     : 528000000Hz

usdhc1 clock  : 198000000Hz

usdhc2 clock  : 198000000Hz

usdhc3 clock  : 198000000Hz

usdhc4 clock  : 198000000Hz

nfc clock     : 24000000Hz

Board: i.MX6Q-SABREAUTO: unknown-board Board: 0x63012 [POR]

Boot Device: NOR

DRAM:  512 MB

Flash: 128 MB

MMC:   FSL_USDHC: 0,FSL_USDHC: 1,FSL_USDHC: 2,FSL_USDHC: 3

*** Warning - bad CRC, using default environment

 

 

In:    serial

Out:   serial

Err:   serial

Net:   got MAC address from IIM: 00:00:00:00:00:00

FEC0 [PRIME]

Hit any key to stop autoboot:  0

## Booting kernel from Legacy Image at 10800000 ...

   Image Name:   Linux-3.0.35-2666-gbdde708

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    3857300 Bytes =  3.7 MB

   Load Address: 10008000

   Entry Point:  10008000

   Verifying Checksum ... OK

   Loading Kernel Image ... OK

OK

 

 

Starting kernel ...

 

 

Uncompressing Linux... done, booting the kernel.

Linux version 3.0.35-2666-gbdde708 (root@ubuntu) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) ) #31 SMP PREEMPT Sun Mar 16 15:14:07 IST 2014

CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d

CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache

Machine: Freescale i.MX 6Quad/DualLite/Solo Sabre Auto Board

Memory policy: ECC disabled, Data cache writealloc

CPU identified as i.MX6Q, silicon rev 1.2

PERCPU: Embedded 7 pages/cpu @8bc06000 s5440 r8192 d15040 u32768

Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 97280

Kernel command line: console=ttymxc0,115200 root=/dev/mtdblock3 rw rootfstype=jffs2 ip=none weim-nor

PID hash table entries: 2048 (order: 1, 8192 bytes)

Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)

Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)

Memory: 384MB = 384MB total

Memory: 377248k/377248k available, 147040k reserved, 0K highmem

Virtual kernel memory layout:

    vector  : 0xffff0000 - 0xffff1000   (   4 kB)

    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)

    DMA     : 0xf4600000 - 0xffe00000   ( 184 MB)

    vmalloc : 0xa0800000 - 0xf2000000   (1304 MB)

    lowmem  : 0x80000000 - 0xa0000000   ( 512 MB)

    pkmap   : 0x7fe00000 - 0x80000000   (   2 MB)

    modules : 0x7f000000 - 0x7fe00000   (  14 MB)

      .init : 0x80008000 - 0x8003c000   ( 208 kB)

      .text : 0x8003c000 - 0x80a5e7e8   (10378 kB)

      .data : 0x80a60000 - 0x80ac0880   ( 387 kB)

       .bss : 0x80ac08a4 - 0x80b0e44c   ( 311 kB)

SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=4, Nodes=1

Preemptible hierarchical RCU implementation.

NR_IRQS:624

MXC GPIO hardware

sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655ms

arm_max_freq=1GHz

MXC_Early serial console at MMIO 0x2020000 (options '115200')

bootconsole [ttymxc0] enabled

Console: colour dummy device 80x30

Calibrating delay loop... 1581.05 BogoMIPS (lpj=7905280)

pid_max: default: 32768 minimum: 301

Mount-cache hash table entries: 512

CPU: Testing write buffer coherency: ok

hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available

CPU1: Booted secondary processor

CPU2: Booted secondary processor

CPU3: Booted secondary processor

Brought up 4 CPUs

SMP: Total of 4 processors activated (6324.22 BogoMIPS).

print_constraints: dummy:

NET: Registered protocol family 16

print_constraints: vddpu: 725 <--> 1300 mV at 700 mV fast normal

print_constraints: vddcore: 725 <--> 1300 mV at 1150 mV fast normal

print_constraints: vddsoc: 725 <--> 1300 mV at 1200 mV fast normal

print_constraints: vdd2p5: 2000 <--> 2775 mV at 2400 mV fast normal

print_constraints: vdd1p1: 800 <--> 1400 mV at 1100 mV fast normal

print_constraints: vdd3p0: 2625 <--> 3400 mV at 3000 mV fast normal

I am in the NOR flash

 

 

hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.

hw-breakpoint: 1 breakpoint(s) reserved for watchpoint single-step.

hw-breakpoint: maximum watchpoint size is 4 bytes.

L310 cache controller enabled

l2x0: 16 ways, CACHE_ID 0x410000c7, AUX_CTRL 0x02070000, Cache size: 1048576 B

bio: create slab <bio-0> at 0

mxs-dma mxs-dma-apbh: initialized

print_constraints: VDDA: 3300 mV

print_constraints: VDDIO: 3300 mV

machine_constraints_voltage: VDDD: unsupportable voltage constraints

reg-fixed-voltage reg-fixed-voltage.5: Failed to register regulator: -22

reg-fixed-voltage: probe of reg-fixed-voltage.5 failed with error -22

print_constraints: vmmc: 3300 mV

SCSI subsystem initialized

spi_imx imx6q-ecspi.0: probed

usbcore: registered new interface driver usbfs

usbcore: registered new interface driver hub

usbcore: registered new device driver usb

Freescale USB OTG Driver loaded, $Revision: 1.55 $

mc_pfuze 1-0008: ID: 0,Full lay: 1 ,Metal lay: 1

mc_pfuze 1-0008: FAB: 0 ,FIN: 0

print_constraints: SW1A: 300 <--> 1875 mV at 1375 mV

print_constraints: SW1B: 300 <--> 1875 mV at 300 mV

print_constraints: SW1C: 300 <--> 1875 mV at 1375 mV

print_constraints: SW2: 800 <--> 3950 mV at 3300 mV

print_constraints: SW3A: 400 <--> 1975 mV at 1500 mV

print_constraints: SW3B: 400 <--> 1975 mV at 1500 mV

print_constraints: SW4: 800 <--> 3950 mV at 3150 mV

print_constraints: SWBST: 5000 <--> 5150 mV at 5000 mV

print_constraints: VSNVS: 1200 <--> 3000 mV at 1800 mV

print_constraints: VREFDDR: at 750 mV

print_constraints: VGEN1: 800 <--> 1550 mV at 1500 mV

print_constraints: VGEN2: 800 <--> 1550 mV at 1500 mV

print_constraints: VGEN3: 1800 <--> 3300 mV at 2500 mV

print_constraints: VGEN4: 1800 <--> 3300 mV at 1800 mV

print_constraints: VGEN5: 1800 <--> 3300 mV at 2800 mV

print_constraints: VGEN6: 1800 <--> 3300 mV at 3300 mV

pca953x 2-0030: failed reading register

pca953x 2-0030: failed writing register

pca953x 2-0030: failed writing register

pca953x 2-0030: failed writing register

pca953x 2-0030: failed writing register

pca953x 2-0030: failed writing register

pca953x 2-0030: failed writing register

pca953x 2-0030: failed writing register

pca953x 2-0030: failed writing register

pca953x 2-0032: failed reading register

pca953x 2-0032: failed writing register

pca953x 2-0032: failed writing register

pca953x 2-0032: failed writing register

pca953x 2-0032: failed writing register

pca953x 2-0032: failed writing register

pca953x 2-0032: failed writing register

pca953x 2-0032: failed writing register

pca953x 2-0032: failed writing register

pca953x 2-0034: failed reading register

pca953x 2-0034: failed writing register

pca953x 2-0034: failed writing register

pca953x 2-0034: failed writing register

pca953x 2-0034: failed writing register

pca953x 2-0034: failed writing register

pca953x 2-0034: failed writing register

pca953x 2-0034: failed writing register

pca953x 2-0034: failed writing register

imx-ipuv3 imx-ipuv3.0: IPU DMFC NORMAL mode: 1(0~1), 5B(4,5), 5F(6,7)

imx-ipuv3 imx-ipuv3.1: IPU DMFC NORMAL mode: 1(0~1), 5B(4,5), 5F(6,7)

mxc_mipi_csi2 mxc_mipi_csi2: i.MX MIPI CSI2 driver probed

mxc_mipi_csi2 mxc_mipi_csi2: i.MX MIPI CSI2 dphy version is 0x3130302a

MIPI CSI2 driver module loaded

Advanced Linux Sound Architecture Driver Version 1.0.24.

Bluetooth: Core ver 2.16

NET: Registered protocol family 31

Bluetooth: HCI device and connection manager initialized

Bluetooth: HCI socket layer initialized

Bluetooth: L2CAP socket layer initialized

Bluetooth: SCO socket layer initialized

cfg80211: Calling CRDA to update world regulatory domain

i2c-core: driver [max17135] using legacy suspend method

i2c-core: driver [max17135] using legacy resume method

Switching to clocksource mxc_timer1

NET: Registered protocol family 2

IP route cache hash table entries: 4096 (order: 2, 16384 bytes)

TCP established hash table entries: 16384 (order: 5, 131072 bytes)

TCP bind hash table entries: 16384 (order: 5, 196608 bytes)

TCP: Hash tables configured (established 16384 bind 16384)

TCP reno registered

UDP hash table entries: 256 (order: 1, 8192 bytes)

UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)

NET: Registered protocol family 1

RPC: Registered named UNIX socket transport module.

RPC: Registered udp transport module.

RPC: Registered tcp transport module.

RPC: Registered tcp NFSv4.1 backchannel transport module.

Static Power Management for Freescale i.MX6

wait mode is enabled for i.MX6

cpaddr = a0880000 suspend_iram_base=a08fc000

PM driver module loaded

IMX usb wakeup probe

add wake up source irq 75

IMX usb wakeup probe

cpu regulator mode:ldo_enable

i.MXC CPU frequency driver

JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.

msgmni has been set to 736

alg: No test for stdrng (krng)

io scheduler noop registered

io scheduler deadline registered

io scheduler cfq registered (default)

mxc_mipi_dsi mxc_mipi_dsi: i.MX MIPI DSI driver probed

MIPI DSI driver module loaded

mxc_sdc_fb mxc_sdc_fb.0: register mxc display driver ldb

_regulator_get: get() with no identifier

imx-ipuv3 imx-ipuv3.1: IPU DMFC DP HIGH RESOLUTION: 1(0,1), 5B(2~5), 5F(6,7)

Console: switching to colour frame buffer device 128x48

mxc_sdc_fb mxc_sdc_fb.1: register mxc display driver ldb

mxc_sdc_fb mxc_sdc_fb.2: register mxc display driver lcd

imx-sdma imx-sdma: loaded firmware 1.1

imx-sdma imx-sdma: initialized

Serial: IMX driver

imx-uart.0: ttymxc0 at MMIO 0x2020000 (irq = 58) is a IMX

console [ttymxc0] enabled, bootconsole disabled

console [ttymxc0] enabled, bootconsole disabled

imx-uart.1: ttymxc1 at MMIO 0x21e8000 (irq = 59) is a IMX

imx-uart.2: ttymxc2 at MMIO 0x21ec000 (irq = 60) is a IMX

imx-uart.3: ttymxc3 at MMIO 0x21f0000 (irq = 61) is a IMX

loop: module loaded

Can't recover from RESET HBA!

No sata disk.

physmap platform flash device: 08000000 at 08000000

physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank. Manufacturer ID 0x000001 Chip ID 0x002801

Amd/Fujitsu Extended Query Table at 0x0040

  Amd/Fujitsu Extended Query version 1.5.

number of CFI chips: 1

Using physmap partition information

Creating 4 MTD partitions on "physmap-flash.0":

0x000000000000-0x000000040000 : "bootloader"

mtd: Giving out device 0 to bootloader

0x000000040000-0x000000080000 : "bootenv"

mtd: Giving out device 1 to bootenv

0x000000080000-0x000000480000 : "kernel"

mtd: Giving out device 2 to kernel

0x000000480000-0x000008000000 : "rootfs"

mtd: Giving out device 3 to rootfs

GPMI NAND driver registered. (IMX)

vcan: Virtual CAN interface driver

CAN device driver interface

flexcan netdevice driver

flexcan imx6q-flexcan.1: device registered (reg_base=a09b0000, irq=143)

FEC Ethernet Driver

fec_enet_mii_bus: probed

ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver

fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller

fsl-ehci fsl-ehci.0: new USB bus registered, assigned bus number 1

fsl-ehci fsl-ehci.0: irq 75, io base 0x02184000

fsl-ehci fsl-ehci.0: USB 2.0 started, EHCI 1.00

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 1 port detected

add wake up source irq 72

pca953x 2-0032: failed writing register

fsl-ehci fsl-ehci.1: Freescale On-Chip EHCI Host Controller

fsl-ehci fsl-ehci.1: new USB bus registered, assigned bus number 2

fsl-ehci fsl-ehci.1: irq 72, io base 0x02184200

fsl-ehci fsl-ehci.1: USB 2.0 started, EHCI 1.00

hub 2-0:1.0: USB hub found

hub 2-0:1.0: 1 port detected

Initializing USB Mass Storage driver...

usbcore: registered new interface driver usb-storage

USB Mass Storage support registered.

ARC USBOTG Device Controller driver (1 August 2005)

mousedev: PS/2 mouse device common for all mice

input: gpio-keys as /devices/platform/gpio-keys/input/input0

egalax_ts 1-0004: egalax_ts: failed to read firmware version

egalax_ts: probe of 1-0004 failed with error -5

i2c-core: driver [isl29023] using legacy suspend method

i2c-core: driver [isl29023] using legacy resume method

snvs_rtc snvs_rtc.0: rtc core: registered snvs_rtc as rtc0

i2c /dev entries driver

Linux video capture interface: v2.00

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video16

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video17

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video18

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video19

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video20

mag3110 2-000e: check mag3110 chip ID

mag3110 2-000e: read chip ID 0xffffff92 is not equal to 0xc4!

mag3110: probe of 2-000e failed with error -22

i2c-core: driver [mag3110] using legacy suspend method

i2c-core: driver [mag3110] using legacy resume method

mma8451 2-001c: read chip ID 0x1 is not equal to 0x1a or 0x2a!

mma8451: probe of 2-001c failed with error -22

imx2-wdt imx2-wdt.0: IMX2+ Watchdog Timer enabled. timeout=60s (nowayout=1)

Bluetooth: Virtual HCI driver ver 1.3

Bluetooth: HCI UART driver ver 2.2

Bluetooth: HCIATH3K protocol initialized

Bluetooth: Generic Bluetooth USB driver ver 0.6

usbcore: registered new interface driver btusb

sdhci: Secure Digital Host Controller Interface driver

sdhci: Copyright(c) Pierre Ossman

mmc0: SDHCI controller on platform [sdhci-esdhc-imx.3] using DMA

mmc1: no vmmc regulator found

mmc1: SDHCI controller on platform [sdhci-esdhc-imx.0] using DMA

mxc_vdoa mxc_vdoa: i.MX Video Data Order Adapter(VDOA) driver probed

VPU initialized

mxc_asrc registered

Galcore version 4.6.9.6622

Thermal calibration data is 0x56b4b27d

Thermal sensor with ratio = 179

Anatop Thermal registered as thermal_zone0

anatop_thermal_probe: default cooling device is cpufreq!

mmc0: new high speed DDR MMC card at address 0001

mmcblk0: mmc0:0001 MMC32G 29.5 GiB

mmcblk0boot0: mmc0:0001 MMC32G partition 1 16.0 MiB

mmcblk0boot1: mmc0:0001 MMC32G partition 2 16.0 MiB

mmcblk0: p1

mmcblk0boot1: unknown partition table

mmcblk0boot0: unknown partition table

caam caam.0: device ID = 0x0a16010000000000

caam caam.0: job rings = 2, qi = 0

alg: No test for authenc(hmac(md5),cbc(aes)) (authenc-hmac-md5-cbc-aes-caam)

caam caam.0: authenc-hmac-md5-cbc-aes-caam

alg: No test for authenc(hmac(sha1),cbc(aes)) (authenc-hmac-sha1-cbc-aes-caam)

caam caam.0: authenc-hmac-sha1-cbc-aes-caam

alg: No test for authenc(hmac(sha224),cbc(aes)) (authenc-hmac-sha224-cbc-aes-caam)

caam caam.0: authenc-hmac-sha224-cbc-aes-caam

alg: No test for authenc(hmac(sha256),cbc(aes)) (authenc-hmac-sha256-cbc-aes-caam)

caam caam.0: authenc-hmac-sha256-cbc-aes-caam

alg: No test for authenc(hmac(md5),cbc(des3_ede)) (authenc-hmac-md5-cbc-des3_ede-caam)

caam caam.0: authenc-hmac-md5-cbc-des3_ede-caam

alg: No test for authenc(hmac(sha1),cbc(des3_ede)) (authenc-hmac-sha1-cbc-des3_ede-caam)

caam caam.0: authenc-hmac-sha1-cbc-des3_ede-caam

alg: No test for authenc(hmac(sha224),cbc(des3_ede)) (authenc-hmac-sha224-cbc-des3_ede-caam)

caam caam.0: authenc-hmac-sha224-cbc-des3_ede-caam

alg: No test for authenc(hmac(sha256),cbc(des3_ede)) (authenc-hmac-sha256-cbc-des3_ede-caam)

caam caam.0: authenc-hmac-sha256-cbc-des3_ede-caam

alg: No test for authenc(hmac(md5),cbc(des)) (authenc-hmac-md5-cbc-des-caam)

caam caam.0: authenc-hmac-md5-cbc-des-caam

alg: No test for authenc(hmac(sha1),cbc(des)) (authenc-hmac-sha1-cbc-des-caam)

caam caam.0: authenc-hmac-sha1-cbc-des-caam

alg: No test for authenc(hmac(sha224),cbc(des)) (authenc-hmac-sha224-cbc-des-caam)

caam caam.0: authenc-hmac-sha224-cbc-des-caam

alg: No test for authenc(hmac(sha256),cbc(des)) (authenc-hmac-sha256-cbc-des-caam)

caam caam.0: authenc-hmac-sha256-cbc-des-caam

caam caam.0: cbc-aes-caam

caam caam.0: ecb-aes-caam

caam caam.0: cbc-3des-caam

caam caam.0: cbc-des-caam

platform caam_jr.0: registering rng-caam

platform caam_sm.0: caam_sm_test: 8-byte key test match OK

platform caam_sm.0: caam_sm_test: 16-byte key test match OK

platform caam_sm.0: caam_sm_test: 32-byte key test match OK

platform caam_secvio.0: security violation service handlers armed

usbcore: registered new interface driver usbhid

usbhid: USB HID core driver

usbcore: registered new interface driver snd-usb-audio

imx-hdmi-soc-dai imx-hdmi-soc-dai.0: Failed: Load HDMI-video first.

sgtl5000 1-000a: Failed to get supply 'VDDD': -19

print_constraints: 1-000a: 850 <--> 1600 mV at 1200 mV normal

sgtl5000 1-000a: sgtl5000 revision 17

asoc: sgtl5000 <-> imx-ssi.1 mapping ok

ALSA device list:

  #0: sgtl5000-audio

NET: Registered protocol family 26

TCP cubic registered

NET: Registered protocol family 17

can: controller area network core (rev 20090105 abi 8)

NET: Registered protocol family 29

can: raw protocol (rev 20090105)

can: broadcast manager protocol (rev 20090105 t)

Bluetooth: RFCOMM TTY layer initialized

Bluetooth: RFCOMM socket layer initialized

Bluetooth: RFCOMM ver 1.11

Bluetooth: BNEP (Ethernet Emulation) ver 1.3

Bluetooth: BNEP filters: protocol multicast

Bluetooth: HIDP (Human Interface Emulation) ver 1.2

lib80211: common routines for IEEE802.11 drivers

VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4

Bus freq driver module loaded

Bus freq driver Enabled

mxc_dvfs_core_probe

DVFS driver module loaded

regulator_init_complete: VGEN6: incomplete constraints, leaving on

regulator_init_complete: VGEN5: incomplete constraints, leaving on

regulator_init_complete: VGEN4: incomplete constraints, leaving on

regulator_init_complete: VGEN3: incomplete constraints, leaving on

regulator_init_complete: VGEN2: incomplete constraints, leaving on

regulator_init_complete: VGEN1: incomplete constraints, leaving on

snvs_rtc snvs_rtc.0: setting system clock to 1970-01-01 00:02:15 UTC (135)

MTDSB: dev_name "/dev/root"

MTDSB: lookup_bdev() returned 0

MTDSB: New superblock for device 3 ("rootfs")

VFS: Mounted root (jffs2 filesystem) on device 31:3.

Freeing init memory: 208K

starting pid 1563, tty '': '/etc/rc.d/rcS'

Mounting /proc and /sys

Starting the hotplug events dispatcher udevd

udevd (1572): /proc/1572/oom_adj is deprecated, please use /proc/1572/oom_score_adj instead.

Synthesizing initial hotplug events

Setting the hostname to freescale

Mounting filesystems

mount: mounting usbfs on /proc/bus/usb failed: No such file or directory

starting pid 3040, tty '': '/etc/rc.d/rc_gpu.S'

starting pid 3046, tty '': '/etc/rc.d/rc_mxc.S'

 

 

arm-none-linux-gnueabi-gcc (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) 4.6.2 20110630 (prerelease)

root filesystem built on Sun, 09 Mar 2014 17:31:44 +0530

Freescale Semiconductor, Inc.

 

 

freescale login: root

Password:

rooLogin incorrect

freescale login:root

Password:

Login incorrect

freescale login: root

login[3048]: root login on 'ttymxc0'

root@freescale ~$ cd ..

root@freescale /$ ls

bin         home        opt         sbin        tmp         var

dev         lib         proc        share       unit_tests

etc         mnt         root        sys         usr

root@freescale /$ cd proc/

root@freescale /proc$ ls

1              15             457            cmdline        misc

10             1516           458            config.gz      modules

11             1552           459            consoles       mounts

12             1561           470            cpu            mtd

1251           1572           473            cpuinfo        net

1286           16             475            crypto         pagetypeinfo

1291           17             5              devices        partitions

1296           2              561            diskstats      sched_debug

13             3              568            driver         scsi

1301           3018           570            execdomains    self

14             3019           574            fb             slabinfo

1422           3046           585            filesystems    softirqs

1425           3048           586            fs             stat

1462           3049           6              interrupts     swaps

1468           3051           648            iomem          sys

1473           331            664            ioports        sysrq-trigger

1474           333            670            irq            sysvipc

1475           335            7              kallsyms       timer_list

1476           370            8              kmsg           tty

1477           374            9              kpagecount     uptime

1478           383            apm            kpageflags     version

1489           395            asound         loadavg        vmallocinfo

1490           4              buddyinfo      locks          vmstat

1491           456            bus            meminfo        zoneinfo

root@freescale /proc$ cd asound/

root@freescale /proc/asound$ ls

card0          devices        pcm            timers

cards          hwdep          sgtl5000audio  version

root@freescale /proc/asound$ cd sgtl5000audio

root@freescale /proc/asound/sgtl5000audio$ ls

id     pcm0c  pcm0p

root@freescale /proc/asound/sgtl5000audio$

Outcomes