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https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1589740/adc3120evm-pdk-tlv320adc3120irter-linux-file
器件型号： ADC3120EVM-PDK
你（们）好
请提供 TLV320ADC3120IRTER Linux 文件
您好、
我们没有专门用于 ADC3120 的 Linux 驱动程序、但有一个适用于 ADC3140 的驱动程序、即 3120 的 4 通道版本。 所以、它应该除了输入通道 3 和 4 之外仍然可以工作。
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/sound/soc lv320adcx140.c
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/sound/soc lv320adcx140.h
此致、 Mir
您好、Jeffres、
目前、MCLK 为 11.2MHz、BCLK 为 2.8MHz、FSYNC 为 44.1kHz、SDOUT 始终为低电平。 您能否查看寄存器？
[ 36.948602] reg 0x0 0x0 [ 36.951623] reg 0x1 0x0 [ 36.954154] reg 0x2 0x81 [ 36.956793] reg 0x3 0x0 [ 36.959337] reg 0x4 0x0 [ 36.961865] reg 0x5 0x5 [ 36.964409] reg 0x6 0x0 [ 36.966951] reg 0x7 0x40 [ 36.969565] reg 0x8 0x0 [ 36.972108] reg 0x9 0x0 [ 36.974636] reg 0xa 0x0 [ 36.977181] reg 0xb 0x0 [ 36.979722] reg 0xc 0x1 [ 36.982249] reg 0xd 0x2 [ 36.984814] reg 0xe 0x3 [ 36.987358] reg 0xf 0x4 [ 36.989887] reg 0x10 0x5 [ 36.992517] reg 0x11 0x6 [ 36.995146] reg 0x12 0x7 [ 36.997760] reg 0x13 0x2 [ 37.000390] reg 0x14 0x48 [ 37.003586] reg 0x15 0x44 [ 37.006290] reg 0x16 0x10 [ 37.009015] reg 0x17 0x0 [ 37.011644] reg 0x18 0x0 [ 37.014260] reg 0x19 0x0 [ 37.016901] reg 0x1a 0x0 [ 37.019531] reg 0x1b 0x0 [ 37.022146] reg 0x1c 0x0 [ 37.024776] reg 0x1d 0x0 [ 37.027407] reg 0x1e 0x0 [ 37.030022] reg 0x1f 0x40 [ 37.032737] reg 0x20 0x50 [ 37.035451] reg 0x21 0x0 [ 37.038066] reg 0x22 0x1 [ 37.040695] reg 0x23 0x0 [ 37.043324] reg 0x24 0x0 [ 37.045940] reg 0x25 0x0 [ 37.048568] reg 0x26 0x0 [ 37.051210] reg 0x27 0x0 [ 37.053826] reg 0x28 0x0 [ 37.056457] reg 0x29 0x0 [ 37.059085] reg 0x2a 0x0 [ 37.061699] reg 0x2b 0x45 [ 37.064416] reg 0x2c 0x67 [ 37.067131] reg 0x2d 0x0 [ 37.069746] reg 0x2e 0x0 [ 37.072375] reg 0x2f 0x0 [ 37.075003] reg 0x30 0x0 [ 37.077618] reg 0x31 0x0 [ 37.080247] reg 0x32 0x0 [ 37.082874] reg 0x33 0xff [ 37.085576] reg 0x34 0x0 [ 37.088206] reg 0x35 0x0 [ 37.090832] reg 0x36 0x0 [ 37.093447] reg 0x37 0x0 [ 37.096076] reg 0x38 0x0 [ 37.098691] reg 0x39 0x0 [ 37.101325] reg 0x3a 0x0 [ 37.103953] reg 0x3b 0x60 [ 37.106655] reg 0x3c 0x0 [ 37.109286] reg 0x3d 0x0 [ 37.111914] reg 0x3e 0xc9 [ 37.114615] reg 0x3f 0x80 [ 37.117330] reg 0x40 0x0 [ 37.119958] reg 0x41 0x0 [ 37.122573] reg 0x42 0x0 [ 37.125202] reg 0x43 0xc9 [ 37.127916] reg 0x44 0x80 [ 37.130618] reg 0x45 0x0 [ 37.133247] reg 0x46 0x0 [ 37.135874] reg 0x47 0x0 [ 37.138489] reg 0x48 0xc9 [ 37.141206] reg 0x49 0x80 [ 37.143920] reg 0x4a 0x0 [ 37.146535] reg 0x4b 0x0 [ 37.149163] reg 0x4c 0x0 [ 37.151791] reg 0x4d 0xc9 [ 37.154492] reg 0x4e 0x80 [ 37.157207] reg 0x4f 0x0 [ 37.159834] reg 0x50 0x0 [ 37.162449] reg 0x51 0x0 [ 37.165078] reg 0x52 0xc9 [ 37.167792] reg 0x53 0x80 [ 37.170493] reg 0x54 0x0 [ 37.173121] reg 0x55 0x0 [ 37.175760] reg 0x56 0x0 [ 37.178375] reg 0x57 0xc9 [ 37.181092] reg 0x58 0x80 [ 37.183806] reg 0x59 0x0 [ 37.186420] reg 0x5a 0x0 [ 37.189049] reg 0x5b 0x0 [ 37.191678] reg 0x5c 0xc9 [ 37.194379] reg 0x5d 0x80 [ 37.197101] reg 0x5e 0x0 [ 37.199730] reg 0x5f 0x0 [ 37.202344] reg 0x60 0x0 [ 37.204977] reg 0x61 0xc9 [ 37.207690] reg 0x62 0x80 [ 37.210391] reg 0x63 0x0 [ 37.213021] reg 0x64 0x0 [ 37.215649] reg 0x65 0x0 [ 37.218262] reg 0x66 0x0 [ 37.220893] reg 0x67 0x0 [ 37.223521] reg 0x68 0x0 [ 37.226135] reg 0x69 0x0 [ 37.228767] reg 0x6a 0x0 [ 37.231395] reg 0x6b 0x1 [ 37.234010] reg 0x6c 0x40 [ 37.236729] reg 0x6d 0x7b [ 37.239443] reg 0x6e 0x0 [ 37.242058] reg 0x6f 0x0 [ 37.244689] reg 0x70 0xe7 [ 37.247404] reg 0x71 0x0 [ 37.250017] reg 0x72 0x0 [ 37.252648] reg 0x73 0xf0 [ 37.255363] reg 0x74 0x0 [ 37.257978] reg 0x75 0xe0 [ 37.261172] reg 0x76 0xc0 [ 37.264381] reg 0x77 0xe0 [ 37.267108] reg 0x78 0x0 [ 37.269724] reg 0x79 0x0 [ 37.272361] reg 0x7a 0x0 [ 37.274989] reg 0x7b 0x40 [ 37.277691] reg 0x7c 0x0 [ 37.280319] reg 0x7d 0x0 [ 37.282946] reg 0x7e 0x0 [ 37.285560] reg 0x7f 0x0
尊敬的 Kevin：
由于假期,我的回复将延迟几天。 我会很快浏览寄存器、然后返回到这里。
-米尔
我浏览了寄存器、似乎可以进行操作、但假设有 4 个通道、因此所有 4 个通道都加电、并且 BCLK 与 FSYNC 之比设置为 64（寄存器 0x15）。 SDOUT 处于低电平可能来自寄存器 0x74、其中所有输出时隙都处于 tri 状态、即未启用。 启用输出可能是 DTS 中缺少的设置、也可能是 alsamixer GUI 中缺少的设置。 请检查这些,如果你能把它们发送到这里,我会看一下。 我将在您的注册表上附上我的注释。 请注意、有许多寄存器是“保留“或设置的、数据表中未提及、这些寄存器仅适用于 ADC3140、而不是 3120。 但是、它应该不会影响操作。
0x00 0x0 #page 0 0x01 0x0 #do not reset 0x02 0x81 #areg is internal generated, device not in sleep mode 0x03 0x0 0x04 0x0 0x05 0x5 #default 0x06 0x0 0x07 0x40 #i2s, 16 bit 0x08 0x0 0x09 0x0 0x0a 0x0 0x0b 0x0 0x0c 0x1 0x0d 0x2 0x0e 0x3 #should be last reg for slot nums but is not 0x0f 0x4 0x10 0x5 0x11 0x6 0x12 0x7 0x13 0x2 #slave mode, auto clocking, 48k multiple (default) 0x14 0x48 #defaults, 48k 0x15 0x44 #!!detected sample rate=48k, 64 bclk to fsync ratio (slightly interesting, means it is 16 bit plus 16 bits of silence) 0x16 0x10 #defaults 0x17 0x0 0x18 0x0 0x19 0x0 0x1a 0x0 0x1b 0x0 0x1c 0x0 0x1d 0x0 0x1e 0x0 0x1f 0x40 #def 0x20 0x50 #def 0x21 0x0 #no gpio1 0x22 0x1 #gpo1 disabled, active low and active high 0x23 0x0 0x24 0x0 0x25 0x0 0x26 0x0 0x27 0x0 0x28 0x0 0x29 0x0 0x2a 0x0 0x2b 0x45 #gpi1 is pdm data input for ch 1 and 2 pdmdin1, gpi2 is pdm data input for ch3 and 4 pdmdin2 0x2c 0x67 #reserved 0x2d 0x0 0x2e 0x0 0x2f 0x0 0x30 0x0 0x31 0x0 0x32 0x0 0x33 0xff #def 0x34 0x0 #no interrupts 0x35 0x0 0x36 0x0 0x37 0x0 0x38 0x0 0x39 0x0 0x3a 0x0 0x3b 0x60 #micbias is set to avdd 0x3c 0x0 0x3d 0x0 0x3e 0xc9 #default. 0db dig volume control 0x3f 0x80 #default. gain=0db 0x40 0x0 0x41 0x0 0x42 0x0 0x43 0xc9 #default ch2 dig volume control =0db 0x44 0x80 #gain=0db ch2 0x45 0x0 0x46 0x0 0x47 0x0 0x48 0xc9 0x49 0x80 0x4a 0x0 0x4b 0x0 0x4c 0x0 0x4d 0xc9 0x4e 0x80 0x4f 0x0 0x50 0x0 0x51 0x0 0x52 0xc9 0x53 0x80 0x54 0x0 0x55 0x0 0x56 0x0 0x57 0xc9 0x58 0x80 0x59 0x0 0x5a 0x0 0x5b 0x0 0x5c 0xc9 0x5d 0x80 0x5e 0x0 0x5f 0x0 0x60 0x0 0x61 0xc9 0x62 0x80 0x63 0x0 0x64 0x0 0x65 0x0 0x66 0x0 0x67 0x0 0x68 0x0 0x69 0x0 0x6a 0x0 0x6b 0x1 #default. linear phase dec filters, hpf with cutoff of 12 hz selected 0x6c 0x40 #default. 0x6d 0x7b #reserved 0x6e 0x0 0x6f 0x0 0x70 0xe7 #default. agc 0x71 0x0 0x72 0x0 0x73 0xf0 #ch1-4 enabled 0x74 0x0 #!!ch1-4 output slots in tri-state (not enabled) 0x75 0xe0 #powered up micbias, adc and pdm channels, pll 0x76 0xc0 #adc ch1 and 2 powered up 0x77 0xe0 #device in active mode 0x78 0x0 0x79 0x0 0x7a 0x0 0x7b 0x40 #reserved 0x7c 0x0 0x7d 0x0 0x7e 0x0 0x7f 0x0
