[Buildroot] ALSA not working /dev/snd/* not mounted

Alejandro Ariel Fachini alefachinic at gmail.com
Mon Apr 16 15:58:48 UTC 2018


 Hello:
Working on SAM9x35 with buildroot and linux4sam 5.6
CODEC wm8731

Compiling buildroot with /dev managment auto devtmpfs

when i run the kernel get:
    input: at91_adc as /devices/soc0/ahb/ahb:apb/
f804c000.adc/input/input0
    wm8731 0-001a: Assuming static MCLK

    0-001a supply AVDD not found, using dummy regulator

    0-001a supply HPVDD not found, using dummy
regulator
    0-001a supply DCVDD not found, using dummy
regulator
    0-001a supply DBVDD not found, using dummy
regulator
    wm8731 0-001a: Failed to issue reset: -121

    wm8731: probe of 0-001a failed with error -121

    sam9x5-snd-wm8731 sound: ASoC: CODEC DAI wm8731-hifi not
registered
    sam9x5-snd-wm8731 sound: ASoC: Platform device allocation failed

ALSA device list:

  No soundcards found.


Tried:
http://elasticsheep.com/2011/01/adding-alsa-audio-support-
to-a-buildroot-based-system/

And tried:
http://lists.busybox.net/pipermail/buildroot/2012-October/059591.html

I cant get the /dev/audio and /dev/snd/* mounted.

1) Can you please tell me which path exactly to put custom_device_table.txt?
2) how can i mannually mount devices with a custom table?
3) How can i do this automatically?

If there is something missing please tell me.

FOR INFO MY KERNEL CONFIG FILE:
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_IRQ_DOMAIN_DEBUG=y
CONFIG_LOG_BUF_SHIFT=16
CONFIG_CGROUPS=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_EMBEDDED=y
CONFIG_SLAB=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARCH_MULTI_V4T=y
CONFIG_ARCH_MULTI_V5=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_AT91=y
CONFIG_SOC_AT91RM9200=y
CONFIG_SOC_AT91SAM9=y
CONFIG_AEABI=y
CONFIG_UACCESS_WITH_MEMCPY=y
# CONFIG_ATAGS is not set
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ARM_APPENDED_DTB=y
CONFIG_ARM_ATAG_DTB_COMPAT=y
CONFIG_CMDLINE="console=ttyS0,115200 initrd=0x21100000,25165824
root=/dev/ram0 rw"
CONFIG_KEXEC=y
CONFIG_CPU_IDLE=y
# CONFIG_ARM_AT91_CPUIDLE is not set
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_PM_DEBUG=y
CONFIG_PM_ADVANCED_DEBUG=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_DIAG is not set
# CONFIG_INET6_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET6_XFRM_MODE_TUNNEL is not set
# CONFIG_INET6_XFRM_MODE_BEET is not set
CONFIG_IPV6_SIT_6RD=y
CONFIG_NETFILTER=y
CONFIG_IP_NF_IPTABLES=y
CONFIG_IP_NF_FILTER=y
CONFIG_CAN=y
CONFIG_CAN_AT91=y
CONFIG_CFG80211=y
CONFIG_MAC80211=y
# CONFIG_UEVENT_HELPER is not set
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
CONFIG_MTD=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI=y
CONFIG_MTD_DATAFLASH=y
CONFIG_MTD_NAND=y
CONFIG_MTD_NAND_ATMEL=y
CONFIG_MTD_UBI=y
CONFIG_MTD_UBI_FASTMAP=y
CONFIG_MTD_UBI_GLUEBI=m
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=4
CONFIG_BLK_DEV_RAM_SIZE=8192
CONFIG_ATMEL_TCLIB=y
CONFIG_ATMEL_SSC=y
CONFIG_EEPROM_AT24=y
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
# CONFIG_SCSI_LOWLEVEL is not set
CONFIG_NETDEVICES=y
CONFIG_MACB=y
# CONFIG_NET_VENDOR_BROADCOM is not set
CONFIG_DM9000=y
# CONFIG_NET_VENDOR_FARADAY is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_MARVELL is not set
# CONFIG_NET_VENDOR_MICREL is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_SEEQ is not set
# CONFIG_NET_VENDOR_SMSC is not set
# CONFIG_NET_VENDOR_STMICRO is not set
CONFIG_DAVICOM_PHY=y
CONFIG_MICREL_PHY=y
CONFIG_MWIFIEX=m
CONFIG_MWIFIEX_USB=m
CONFIG_RT2X00=m
CONFIG_RT2500USB=m
CONFIG_RT73USB=m
CONFIG_RT2800USB=m
CONFIG_RT2800USB_RT53XX=y
CONFIG_RT2800USB_RT55XX=y
CONFIG_RT2800USB_UNKNOWN=y
CONFIG_RTL8187=m
CONFIG_INPUT_POLLDEV=y
# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
CONFIG_INPUT_MOUSEDEV_SCREEN_X=480
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=272
CONFIG_INPUT_JOYDEV=y
CONFIG_INPUT_EVDEV=y
# CONFIG_KEYBOARD_ATKBD is not set
CONFIG_KEYBOARD_QT1070=y
CONFIG_KEYBOARD_GPIO=y
# CONFIG_INPUT_MOUSE is not set
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_TOUCHSCREEN_ADS7846=y
# CONFIG_SERIO is not set
CONFIG_LEGACY_PTY_COUNT=4
CONFIG_SERIAL_ATMEL=y
CONFIG_SERIAL_ATMEL_CONSOLE=y
CONFIG_HW_RANDOM=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_AT91=y
CONFIG_I2C_GPIO=y
CONFIG_SPI=y
CONFIG_SPI_ATMEL=y
CONFIG_SPI_GPIO=y
CONFIG_SPI_SPIDEV=m
CONFIG_DEBUG_GPIO=y
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_GENERIC_PLATFORM=y
CONFIG_POWER_RESET=y
CONFIG_POWER_SUPPLY=y
# CONFIG_HWMON is not set
CONFIG_WATCHDOG=y
CONFIG_AT91SAM9X_WATCHDOG=y
CONFIG_MFD_ATMEL_HLCDC=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_MEDIA_SUPPORT=y
CONFIG_MEDIA_CAMERA_SUPPORT=y
CONFIG_MEDIA_USB_SUPPORT=y
CONFIG_USB_VIDEO_CLASS=m
# CONFIG_USB_GSPCA is not set
CONFIG_V4L_PLATFORM_DRIVERS=y
CONFIG_VIDEO_ATMEL_ISI=y
# CONFIG_MEDIA_SUBDRV_AUTOSELECT is not set
CONFIG_VIDEO_OV2640=m
CONFIG_VIDEO_OV2659=m
CONFIG_VIDEO_OV7640=m
CONFIG_VIDEO_OV7670=m
# CONFIG_DVB_AU8522_V4L is not set
# CONFIG_DVB_TUNER_DIB0070 is not set
# CONFIG_DVB_TUNER_DIB0090 is not set
CONFIG_DRM=y
CONFIG_DRM_ATMEL_HLCDC=y
CONFIG_DRM_PANEL_SIMPLE=y
CONFIG_FB_ATMEL=y
# CONFIG_LCD_CLASS_DEVICE is not set
CONFIG_BACKLIGHT_ATMEL_LCDC=y
# CONFIG_BACKLIGHT_GENERIC is not set
CONFIG_BACKLIGHT_PWM=y
CONFIG_SOUND=y
CONFIG_SND=y
CONFIG_SND_ATMEL_AC97C=y
CONFIG_SND_SOC=y
CONFIG_SND_ATMEL_SOC=y
CONFIG_SND_AT91_SOC_SAM9G20_WM8731=y
CONFIG_SND_ATMEL_SOC_WM8904=y
CONFIG_SND_AT91_SOC_SAM9X5_WM8731=y
CONFIG_SND_SOC_AC97_CODEC=y
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_ACM=y
CONFIG_USB_STORAGE=y
CONFIG_USB_SERIAL=y
CONFIG_USB_SERIAL_GENERIC=y
CONFIG_USB_SERIAL_FTDI_SIO=y
CONFIG_USB_SERIAL_PL2303=y
CONFIG_USB_GADGET=y
CONFIG_USB_ATMEL_USBA=m
CONFIG_USB_CONFIGFS=m
CONFIG_USB_CONFIGFS_ACM=y
CONFIG_USB_CONFIGFS_MASS_STORAGE=y
CONFIG_USB_ZERO=m
CONFIG_USB_MASS_STORAGE=m
CONFIG_USB_G_SERIAL=m
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_PWM=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_LEDS_TRIGGER_GPIO=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_AT91RM9200=y
CONFIG_RTC_DRV_AT91SAM9=y
CONFIG_DMADEVICES=y
CONFIG_AT_HDMAC=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_IIO=y
CONFIG_AT91_ADC=y
CONFIG_PWM=y
CONFIG_PWM_ATMEL=y
CONFIG_PWM_ATMEL_HLCDC_PWM=y
CONFIG_PWM_ATMEL_TCB=y
CONFIG_EXT4_FS=y
CONFIG_FANOTIFY=y
CONFIG_VFAT_FS=y
CONFIG_TMPFS=y
CONFIG_CONFIGFS_FS=y
CONFIG_JFFS2_FS=y
CONFIG_JFFS2_FS_DEBUG=2
CONFIG_UBIFS_FS=y
CONFIG_UBIFS_FS_ADVANCED_COMPR=y
CONFIG_NFS_FS=y
CONFIG_ROOT_NFS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_CODEPAGE_850=y
CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_UTF8=y
CONFIG_STRIP_ASM_SYMS=y
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_BUGVERBOSE is not set
# CONFIG_FTRACE is not set
CONFIG_ARM_PTDUMP=y
CONFIG_DEBUG_USER=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_USER_API_HASH=m
CONFIG_CRYPTO_USER_API_SKCIPHER=m
# CONFIG_CRYPTO_HW is not set
CONFIG_CRC_CCITT=y
CONFIG_CRC_ITU_T=y
CONFIG_CRC7=y

Regards
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.busybox.net/pipermail/buildroot/attachments/20180416/b95e055d/attachment-0002.html>


More information about the buildroot mailing list