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TWR-LS1021A:SDKv1.7 Sound card not detecting when booting linux via SDCARD.

Question asked by khandavalli on Feb 5, 2015
Latest reply on Feb 5, 2015 by Sinan Akman

Hi,

 

while trying to boot linux via sdcard, sound card is not getting detected, where as the same kernel when booted via NOR is getting detected without any issues. Followed http://www.freescale.com/infocenter/index.jsp?topic=%2FQORIQSDK%2F1323833.htmlinstructions provided in QorIQ SDK 1.7 Documentation > Linux Kernel Drivers > Audio SAI section to enable Soundcard

 

Scenario1 Log Snippet (u-boot from NOR flash):

 

sgtl5000 1-000a: sgtl5000 revision 0x11

mmc0: new high speed SDHC card at address aaaa

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

mmcblk0: mmc0:aaaa SU08G 7.40 GiB

1-000a: 1200 mV normal

sgtl5000 1-000a: Using internal LDO instead of VDDD

mmcblk0: p1 p2

vf610-sgtl5000 sound.9:  sgtl5000 <-> 2b50000.sai mapping ok ()

oprofile: using timer interrupt.

TCP: cubic registered

Initializing XFRM netlink socket

NET: Registered protocol family 17

NET: Registered protocol family 15

can: controller area network core (rev 20120528 abi 9)

NET: Registered protocol family 29

can: raw protocol (rev 20120528)

Key type dns_resolver registered

regulator-dummy: disabling

drivers/rtc/hctosys.c: unable to open rtc device (rtc0)

ALSA device list:

  #0: FSL-VF610-TWR-BOARD


Scenario2 (u-boot from SDCARD, same kernel)

sgtl5000: probe of 1-000a failed with error -110

vf610-sgtl5000 sound.9: ASoC: CODEC (null) not registered

vf610-sgtl5000 sound.9: TWR-AUDIO-SGTL board required :-517

platform sound.9: Driver vf610-sgtl5000 requests probe deferral

can: controller area network core (rev 20120528 abi 9)

NET: Registered protocol family 29

can: raw protocol (rev 20120528)

Key type dns_resolver registered

regulator-dummy: disabling

vf610-sgtl5000 sound.9: ASoC: CODEC (null) not registered

vf610-sgtl5000 sound.9: TWR-AUDIO-SGTL board required :-517

platform sound.9: Driver vf610-sgtl5000 requests probe deferral

ALSA device list:

  No soundcards found.


Are there any clock or regulator settings to be made in u-boot or have to be passed when using bootloader from the SDCARD?


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