This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Tool/software: Linux
We adapted TI's TAS5805 Linux driver to get to work with the TAS5825. Only moonier changes were needed. We also created a simple prototyping board that enables us to connect our processor to the TAS5825 via I2C and I2S. We provide 3.3V for digital power, and 12VDC for analog power. We can communicate with the chip via I2C, including setting registers and reading register values. We also created a minimal configuration. The driver asserts this configuration when it is loaded. However, no matter what we do, we do not get any switching on the speaker outputs.
The !mute pin is asserted high. The !shutdown pin is asserted high.
Status Register 0x03 reports a value of 0X03 when music is present on I2S (this indicates the chip is in play mode) and 0X0B when music is absent (this indicates mute-on + play mode). We are not externally controlling the muting of the chip, so the change from mute-off to mute-on is presumably being done by the chip, not us. Nevertheless, it seems to indicate that the chip is aware of the presence or absence of an I2S stream.
Interestingly, the fault registers report faults but we cannot figure out what the faults are due to:
Fault Register 0x70 reports 0x01, which indicates a right channel over current fault.
Fault Register 0x71 reports 0x04 which indicates a clock fault.
Our configuration is as follows, written to the chip in the order shown:
Register |
Value |
0x01 |
0 |
0x02 |
0 |
0x0F |
0 |
0x28 |
0x39 |
0x29 |
0 |
0x31 |
0 |
0x33 |
0x03 |
0x34 |
0 |
0x50 |
0 |
0x03 |
0x03 |
You might wonder if we have tried the TAS5825EVM eval kit, and the answer is that we have ordered it but have not yet received it.
Finally, for the moment, I would like to point out that the data sheet documentation for Table 11 is not correct. It describes bit 3 of register 0x28H as having four bits of information. Clearly four bits cannot fit into one bit! We looked at Table 11 in the data sheet for the TAS5805 and it makes sense. We used the values from the TAS5805 data sheet to set register 0x28 in our TAS5825.
Any help you can provide would be most appreciated.
Respectfully,
Robert Seliger
WHIM LLC
We used the driver that TI provided in this link: https://e2e.ti.com/support/audio/f/6/t/722027. The request for the driver source code originated with us, but was posted by a TI application engineer.
- Rob
Hi Rob,
Try this code below. I put the minimum configurations in that code. Let me know if you guys still see the same issue.
BTW, could you show me the schematic? Thanks.
/* * Driver for the TAS5825M Audio Amplifier * * Author: Andy Liu <andy-liu@ti.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/slab.h> #include <linux/of.h> #include <linux/init.h> #include <linux/i2c.h> #include <linux/regmap.h> #include <sound/soc.h> #include <sound/pcm.h> #include <sound/initval.h> #define TAS5825M_DRV_NAME "tas5825m" #define TAS5825M_RATES (SNDRV_PCM_RATE_48000) #define TAS5825M_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) #define TAS5825M_REG_00 (0x00) #define TAS5825M_REG_03 (0x03) #define TAS5825M_REG_0C (0x0c) #define TAS5825M_REG_0D (0x0d) #define TAS5825M_REG_0E (0x0e) #define TAS5825M_REG_0F (0x0f) #define TAS5825M_REG_10 (0x10) #define TAS5825M_REG_11 (0x11) #define TAS5825M_REG_12 (0x12) #define TAS5825M_REG_13 (0x13) #define TAS5825M_REG_35 (0x35) #define TAS5825M_REG_7F (0x7f) #define TAS5825M_PAGE_00 (0x00) #define TAS5825M_PAGE_0B (0x0b) #define TAS5825M_BOOK_00 (0x00) #define TAS5825M_BOOK_8C (0x8c) #define TAS5825M_VOLUME_MAX (158) #define TAS5825M_VOLUME_MIN (0) const uint32_t tas5825m_volume[] = { 0x0000001B, //0, -110dB 0x0000001E, //1, -109dB 0x00000021, //2, -108dB 0x00000025, //3, -107dB 0x0000002A, //4, -106dB 0x0000002F, //5, -105dB 0x00000035, //6, -104dB 0x0000003B, //7, -103dB 0x00000043, //8, -102dB 0x0000004B, //9, -101dB 0x00000054, //10, -100dB 0x0000005E, //11, -99dB 0x0000006A, //12, -98dB 0x00000076, //13, -97dB 0x00000085, //14, -96dB 0x00000095, //15, -95dB 0x000000A7, //16, -94dB 0x000000BC, //17, -93dB 0x000000D3, //18, -92dB 0x000000EC, //19, -91dB 0x00000109, //20, -90dB 0x0000012A, //21, -89dB 0x0000014E, //22, -88dB 0x00000177, //23, -87dB 0x000001A4, //24, -86dB 0x000001D8, //25, -85dB 0x00000211, //26, -84dB 0x00000252, //27, -83dB 0x0000029A, //28, -82dB 0x000002EC, //29, -81dB 0x00000347, //30, -80dB 0x000003AD, //31, -79dB 0x00000420, //32, -78dB 0x000004A1, //33, -77dB 0x00000532, //34, -76dB 0x000005D4, //35, -75dB 0x0000068A, //36, -74dB 0x00000756, //37, -73dB 0x0000083B, //38, -72dB 0x0000093C, //39, -71dB 0x00000A5D, //40, -70dB 0x00000BA0, //41, -69dB 0x00000D0C, //42, -68dB 0x00000EA3, //43, -67dB 0x0000106C, //44, -66dB 0x0000126D, //45, -65dB 0x000014AD, //46, -64dB 0x00001733, //47, -63dB 0x00001A07, //48, -62dB 0x00001D34, //49, -61dB 0x000020C5, //50, -60dB 0x000024C4, //51, -59dB 0x00002941, //52, -58dB 0x00002E49, //53, -57dB 0x000033EF, //54, -56dB 0x00003A45, //55, -55dB 0x00004161, //56, -54dB 0x0000495C, //57, -53dB 0x0000524F, //58, -52dB 0x00005C5A, //59, -51dB 0x0000679F, //60, -50dB 0x00007444, //61, -49dB 0x00008274, //62, -48dB 0x0000925F, //63, -47dB 0x0000A43B, //64, -46dB 0x0000B845, //65, -45dB 0x0000CEC1, //66, -44dB 0x0000E7FB, //67, -43dB 0x00010449, //68, -42dB 0x0001240C, //69, -41dB 0x000147AE, //70, -40dB 0x00016FAA, //71, -39dB 0x00019C86, //72, -38dB 0x0001CEDC, //73, -37dB 0x00020756, //74, -36dB 0x000246B5, //75, -35dB 0x00028DCF, //76, -34dB 0x0002DD96, //77, -33dB 0x00033718, //78, -32dB 0x00039B87, //79, -31dB 0x00040C37, //80, -30dB 0x00048AA7, //81, -29dB 0x00051884, //82, -28dB 0x0005B7B1, //83, -27dB 0x00066A4A, //84, -26dB 0x000732AE, //85, -25dB 0x00081385, //86, -24dB 0x00090FCC, //87, -23dB 0x000A2ADB, //88, -22dB 0x000B6873, //89, -21dB 0x000CCCCD, //90, -20dB 0x000E5CA1, //91, -19dB 0x00101D3F, //92, -18dB 0x0012149A, //93, -17dB 0x00144961, //94, -16dB 0x0016C311, //95, -15dB 0x00198A13, //96, -14dB 0x001CA7D7, //97, -13dB 0x002026F3, //98, -12dB 0x00241347, //99, -11dB 0x00287A27, //100, -10dB 0x002D6A86, //101, -9dB 0x0032F52D, //102, -8dB 0x00392CEE, //103, -7dB 0x004026E7, //104, -6dB 0x0047FACD, //105, -5dB 0x0050C336, //106, -4dB 0x005A9DF8, //107, -3dB 0x0065AC8C, //108, -2dB 0x00721483, //109, -1dB 0x00800000, //110, 0dB 0x008F9E4D, //111, 1dB 0x00A12478, //112, 2dB 0x00B4CE08, //113, 3dB 0x00CADDC8, //114, 4dB 0x00E39EA9, //115, 5dB 0x00FF64C1, //116, 6dB 0x011E8E6A, //117, 7dB 0x0141857F, //118, 8dB 0x0168C0C6, //119, 9dB 0x0194C584, //120, 10dB 0x01C62940, //121, 11dB 0x01FD93C2, //122, 12dB 0x023BC148, //123, 13dB 0x02818508, //124, 14dB 0x02CFCC01, //125, 15dB 0x0327A01A, //126, 16dB 0x038A2BAD, //127, 17dB 0x03F8BD7A, //128, 18dB 0x0474CD1B, //129, 19dB 0x05000000, //130, 20dB 0x059C2F02, //131, 21dB 0x064B6CAE, //132, 22dB 0x07100C4D, //133, 23dB 0x07ECA9CD, //134, 24dB 0x08E43299, //135, 25dB 0x09F9EF8E, //136, 26dB 0x0B319025, //137, 27dB 0x0C8F36F2, //138, 28dB 0x0E1787B8, //139, 29dB 0x0FCFB725, //140, 30dB 0x11BD9C84, //141, 31dB 0x13E7C594, //142, 32dB 0x16558CCB, //143, 33dB 0x190F3254, //144, 34dB 0x1C1DF80E, //145, 35dB 0x1F8C4107, //146, 36dB 0x2365B4BF, //147, 37dB 0x27B766C2, //148, 38dB 0x2C900313, //149, 39dB 0x32000000, //150, 40dB 0x3819D612, //151, 41dB 0x3EF23ECA, //152, 42dB 0x46A07B07, //153, 43dB 0x4F3EA203, //154, 44dB 0x58E9F9F9, //155, 45dB 0x63C35B8E, //156, 46dB 0x6FEFA16D, //157, 47dB 0x7D982575, //158, 48dB }; struct tas5825m_priv { struct regmap *regmap; struct mutex lock; int vol; }; const struct regmap_config tas5825m_regmap = { .reg_bits = 8, .val_bits = 8, .cache_type = REGCACHE_RBTREE, }; static int tas5825m_vol_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->access = (SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE); uinfo->count = 1; uinfo->value.integer.min = TAS5825M_VOLUME_MIN; uinfo->value.integer.max = TAS5825M_VOLUME_MAX; uinfo->value.integer.step = 1; return 0; } static int tas5825m_vol_locked_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); struct tas5825m_priv *tas5825m = snd_soc_codec_get_drvdata(codec); mutex_lock(&tas5825m->lock); ucontrol->value.integer.value[0] = tas5825m->vol; mutex_unlock(&tas5825m->lock); return 0; } static inline int get_volume_index(int vol) { int index; index = vol; if (index < TAS5825M_VOLUME_MIN) index = TAS5825M_VOLUME_MIN; if (index > TAS5825M_VOLUME_MAX) index = TAS5825M_VOLUME_MAX; return index; } static void tas5825m_set_volume(struct snd_soc_codec *codec, int vol) { unsigned int index; uint32_t volume_hex; uint8_t byte4; uint8_t byte3; uint8_t byte2; uint8_t byte1; index = get_volume_index(vol); volume_hex = tas5825m_volume[index]; byte4 = ((volume_hex >> 24) & 0xFF); byte3 = ((volume_hex >> 16) & 0xFF); byte2 = ((volume_hex >> 8) & 0xFF); byte1 = ((volume_hex >> 0) & 0xFF); //w 98 00 00 snd_soc_write(codec, TAS5825M_REG_00, TAS5825M_PAGE_00); //w 98 7f 8c snd_soc_write(codec, TAS5825M_REG_7F, TAS5825M_BOOK_8C); //w 98 00 0b snd_soc_write(codec, TAS5825M_REG_00, TAS5825M_PAGE_0B); //w 98 0c xx xx xx xx snd_soc_write(codec, TAS5825M_REG_0C, byte4); snd_soc_write(codec, TAS5825M_REG_0D, byte3); snd_soc_write(codec, TAS5825M_REG_0E, byte2); snd_soc_write(codec, TAS5825M_REG_0F, byte1); //w 98 10 xx xx xx xx snd_soc_write(codec, TAS5825M_REG_10, byte4); snd_soc_write(codec, TAS5825M_REG_11, byte3); snd_soc_write(codec, TAS5825M_REG_12, byte2); snd_soc_write(codec, TAS5825M_REG_13, byte1); } static int tas5825m_vol_locked_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); struct tas5825m_priv *tas5825m = snd_soc_codec_get_drvdata(codec); mutex_lock(&tas5825m->lock); tas5825m->vol = ucontrol->value.integer.value[0]; tas5825m_set_volume(codec, tas5825m->vol); mutex_unlock(&tas5825m->lock); return 0; } static const struct snd_kcontrol_new tas5825m_vol_control = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Master Playback Volume", .info = tas5825m_vol_info, .get = tas5825m_vol_locked_get, .put = tas5825m_vol_locked_put, }; static int tas5825m_snd_probe(struct snd_soc_codec *codec) { int ret; ret = snd_soc_add_codec_controls(codec, &tas5825m_vol_control, 1); return ret; } static struct snd_soc_codec_driver soc_codec_tas5825m = { .probe = tas5825m_snd_probe, }; static int tas5825m_mute(struct snd_soc_dai *dai, int mute) { u8 reg03_value = 0; u8 reg35_value = 0; struct snd_soc_codec *codec = dai->codec; if (mute) { //mute both left & right channels reg03_value = 0x0b; reg35_value = 0x00; } else { //umute reg03_value = 0x03; reg35_value = 0x11; } snd_soc_write(codec, TAS5825M_REG_00, TAS5825M_PAGE_00); snd_soc_write(codec, TAS5825M_REG_7F, TAS5825M_BOOK_00); snd_soc_write(codec, TAS5825M_REG_00, TAS5825M_PAGE_00); snd_soc_write(codec, TAS5825M_REG_03, reg03_value); snd_soc_write(codec, TAS5825M_REG_35, reg35_value); return 0; } static const struct snd_soc_dai_ops tas5825m_dai_ops = { .digital_mute = tas5825m_mute, }; static struct snd_soc_dai_driver tas5825m_dai = { .name = "tas5825m-amplifier", .playback = { .stream_name = "Playback", .channels_min = 2, .channels_max = 2, .rates = TAS5825M_RATES, .formats = TAS5825M_FORMATS, }, .ops = &tas5825m_dai_ops, }; #if 1 /* #Get TAS5825M into play mode w 98 00 00 w 98 7f 00 w 98 00 00 w 98 03 03 # Clear FAULT w 98 78 80 */ static const struct reg_sequence tas5825m_init_sequence[] = { { 0x00, 0x00 }, { 0x7f, 0x00 }, { 0x00, 0x00 }, { 0x03, 0x03 }, { 0x78, 0x80 }, }; #endif static int tas5825m_probe(struct device *dev, struct regmap *regmap) { struct tas5825m_priv *tas5825m; int ret; tas5825m = devm_kzalloc(dev, sizeof(struct tas5825m_priv), GFP_KERNEL); if (!tas5825m) return -ENOMEM; dev_set_drvdata(dev, tas5825m); tas5825m->regmap = regmap; tas5825m->vol = 100; //100, -10dB mutex_init(&tas5825m->lock); ret = regmap_register_patch(regmap, tas5825m_init_sequence, ARRAY_SIZE(tas5825m_init_sequence)); if (ret != 0) { dev_err(dev, "Failed to initialize TAS5825M: %d\n",ret); goto err; } ret = snd_soc_register_codec(dev, &soc_codec_tas5825m, &tas5825m_dai, 1); if (ret != 0) { dev_err(dev, "Failed to register CODEC: %d\n", ret); goto err; } return 0; err: return ret; } static int tas5825m_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct regmap *regmap; struct regmap_config config = tas5825m_regmap; regmap = devm_regmap_init_i2c(i2c, &config); if (IS_ERR(regmap)) return PTR_ERR(regmap); return tas5825m_probe(&i2c->dev, regmap); } static int tas5825m_remove(struct device *dev) { snd_soc_unregister_codec(dev); return 0; } static int tas5825m_i2c_remove(struct i2c_client *i2c) { tas5825m_remove(&i2c->dev); return 0; } static const struct i2c_device_id tas5825m_i2c_id[] = { { "tas5825m", }, { } }; MODULE_DEVICE_TABLE(i2c, tas5825m_i2c_id); #ifdef CONFIG_OF static const struct of_device_id tas5825m_of_match[] = { { .compatible = "ti,tas5825m", }, { } }; MODULE_DEVICE_TABLE(of, tas5825m_of_match); #endif static struct i2c_driver tas5825m_i2c_driver = { .probe = tas5825m_i2c_probe, .remove = tas5825m_i2c_remove, .id_table = tas5825m_i2c_id, .driver = { .name = TAS5825M_DRV_NAME, .of_match_table = tas5825m_of_match, }, }; module_i2c_driver(tas5825m_i2c_driver); MODULE_AUTHOR("Andy Liu <andy-liu@ti.com>"); MODULE_DESCRIPTION("TAS5825M Audio Amplifier Driver"); MODULE_LICENSE("GPL v2");
Andy
We tried your latest code, but still no sound. I sent you a private message regarding your request for the schematic.
- Rob
Although we have the TI eval board working via a Windows PC, we have not yet resolved the issue with the combination of our own board and the Raspberry Pi platform that we use for prototyping.
We are waiting for more chips from TI (the TAS5825 has been on back order) so that we can build more of our own boards for trouble-shooting.
We hope to receive more chips next week (week of 10/1).
- Rob