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$
Solved! Go to Solution.
You may use aplay and arecord utility as shown in section 23.5.1 (Stereo CODEC Unit Test)
of "i.MX_6Dual6Quad_Linux_Reference_Manual.pdf".
Hi,
How do I test the read and write cycles of the SGTL5000 chip using the Interrupt registers (IRQ)? Currently, I have all the alsa utilities attached in the kernel, but I do not have i2ctools.
I want to toggle read/write of SGTL audio every 32ms using interrupts inside SGTL.
Best,
Abhijeet
You may use aplay and arecord utility as shown in section 23.5.1 (Stereo CODEC Unit Test)
of "i.MX_6Dual6Quad_Linux_Reference_Manual.pdf".
Hello Yuri,
Can you post this manual here, it would be helpful in accomplishing my task.
Thanks and Regards,
Purvi