TI中文支持网板子启动后会有如下提示：
4] mousedev: PS/2 mouse device common for all mice
[ 3.782724] i2c /dev entries driver
[ 3.791958] Linux video capture interface: v2.00
[ 3.802012] usbcore: registered new interface driver uvcvideo
[ 3.808002] USB Video Class driver (1.1.1)
[ 3.822635] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[ 3.852504] cpuidle: using governor ladder
[ 3.871818] cpuidle: using governor menu
[ 3.933052] usbcore: registered new interface driver usbhid
[ 3.938906] usbhid: USB HID core driver
[ 4.972292] omap_i2c omap_i2c.3: controller timed out
[ 4.977624] _regulator_get: 3-0018 supply IOVDD not found, using dummy regulator
[ 4.985447] _regulator_get: 3-0018 supply DVDD not found, using dummy regulator
[ 4.993118] _regulator_get: 3-0018 supply AVDD not found, using dummy regulator
[ 5.000776] _regulator_get: 3-0018 supply DRVDD not found, using dummy regulator
[ 5.022593] asoc: tlv320aic3x-hifi <-> davinci-mcasp.1 mapping ok
[ 6.021463] omap_i2c omap_i2c.3: controller timed out
[ 7.021437] omap_i2c omap_i2c.3: controller timed out
[ 8.041440] omap_i2c omap_i2c.3: controller timed out
[ 9.061590] omap_i2c omap_i2c.3: controller timed out
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[ 100.861765] omap_i2c omap_i2c.3: controller timed out
[ 101.881773] omap_i2c omap_i2c.3: controller timed out
[ 102.901690] omap_i2c omap_i2c.3: controller timed out
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[ 104.941587] omap_i2c omap_i2c.3: controller timed out
[ 105.961618] omap_i2c omap_i2c.3: controller timed out
[ 106.981638] omap_i2c omap_i2c.3: controller timed out
[ 108.001594] omap_i2c omap_i2c.3: controller timed out
[ 108.023238] ALSA device list:
[ 108.026337] #0: AM335X EVM
[ 108.029334] oprofile: hardware counters not available
[ 108.034632] oprofile: using timer interrupt.
[ 108.039104] nf_conntrack version 0.5.0 (8011 buckets, 32044 max)
[ 108.045905] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 108.051593] TCP cubic registered
[ 108.054961] NET: Registered protocol family 17
[ 108.059599] can: controller area network core (rev 20090105 abi 8)
[ 108.066146] NET: Registered protocol family 29
[ 108.070801] can: raw protocol (rev 20090105)
[ 108.075266] can: broadcast manager protocol (rev 20090105 t)
[ 108.081200] Registering the dns_resolver key type
[ 108.086192] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[ 108.094200] ThumbEE CPU extension supported.
[ 108.098713] mux: Failed to setup hwmod io irq -22
[ 108.104305] Power Management for AM33XX family
[ 108.109151] Trying to load am335x-pm-firmware.bin (60 secs timeout)
[ 108.115835] Copied the M3 firmware to UMEM
[ 108.120180] Cortex M3 Firmware Version = 0x181
[ 108.129961] clock: disabling unused clocks to save power
在/dev/snc/ 下有如下设备
root@ok335x:/dev/snd# ls
by-path controlC0 pcmC0D0c pcmC0D0p timer
运行aplay后如下
root@ok335x:~# aplay
^CAborted by signal Interrupt…
[ 549.451494] omap_i2c omap_i2c.3: controller timed out
[ 550.451481] omap_i2c omap_i2c.3: controller timed out
鄙人新手 ，求大神帮忙解决下。谢谢。
user151383853：
[ 4.972292] omap_i2c omap_i2c.3: controller timed out[ 4.977624] _regulator_get: 3-0018 supply IOVDD not found, using dummy regulator
从字面意思看, 是 OMAP 芯片的 I2C 接口没有响应, 二下面有提到电源有问题. 你先查查你的板子的硬件吧
peiqi xu：
回复 user151383853:
您好，我在内核里面配置了这两个地方如下所示，请问还要修改别的地方吗
修改文件:kernel-3.2\sound\soc\davinci\Davinci-evm.c
static struct snd_soc_dai_link am335x_evm_sk_dai = { .name = "TLV320AIC3X", .stream_name = "AIC3X", .cpu_dai_name = "davinci-mcasp.1", .codec_dai_name = "tlv320aic3x-hifi", .codec_name = "tlv320aic3x-codec.3-0018", .platform_name = "davinci-pcm-audio", .init = evm_aic3x_init, .ops = &evm_ops,};
将.codec_name = "tlv320aic3x-codec.2-001b",改成 .codec_name = "tlv320aic3x-codec.3-0018",
修改kernel-3.2/arch/arm/mach-omap2/board-arm335xevm.ci2c设备地址是0x18
添加static struct i2c_board_info am335x_i2c2_boardinfo3[] = { { I2C_BOARD_INFO("tlv320aic3x", 0x18), },};
i2c_init直接改成如下static void i2c_init(int evm_id, int profile) alias fck already exists{ setup_pin_mux(i2c1_pin_mux);
omap_register_i2c_bus(3, 100, am335x_i2c2_boardinfo3,ARRAY_SIZE(am335x_i2c2_boardinfo3)); return;}
Mickey Zhang：
回复 peiqi xu:
建议去MCU的窗口问。
