SGTL5000 SGTL5000_CHIP_ID read fail

[Anira]

Hi All,

i am working on SGTL5000 bring up, still the module is not functional. following are my observations.

MCLK- fed to SGTL5000 is 11.36 MHz,

i2c detect is showing the sgtl5000 chip active in i2c bus, 

but SGTL5000_CHIP_ID read chip ID is failed.

sgtl5000.c - sound/soc/codecs/sgtl5000.c - Linux source code

/* read chip information */
ret = regmap_read(sgtl5000->regmap, SGTL5000_CHIP_ID, &reg);
if (ret) {
dev_err(&client->dev, "Error reading chip id %d\n", ret);
goto disable_clk;
}

Any suggestion why its failing, ?

[Anira]

Hi Igor,

the sgtl5000 bring on stm32mp1 cpu using i2s 

some time speaker-test utility is getting passed, some times i hear lot of noisy with no audio

speaker-test --device hw:0,0 --rate 48000 --channels 2 --format S16_LE --test wav

what will start point to debug,

[Anira]

sgtl5000 i2c query works  confirmed by i2cdetect -y 0,  but no reply from SGTL5000

Error reading chip id -6

sgtl5000.c - sound/soc/codecs/sgtl5000.c - Linux source code (v4.8) - Bootlin

/* read chip information */
ret = regmap_read(sgtl5000->regmap, SGTL5000_CHIP_ID, &reg);
if (ret) {
dev_err(&client->dev, "Error reading chip id %d\n", ret);
goto disable_clk;
}

[igorpadykov]

Hi Anit

reason may be  SGTL5000 Silicon Errata - Errata

Best regards
igor

[Anira]

Hi Igor,

This is my existing design, which is confusing to me what to, may you elaborate what's the software solution here ?