For some reason, we need to use SGTL5000 DAC in I2S mode.
In my environment, fs=48khz, mclk=256fs=12.288Mhz, sck=64fs=3.072Mhz. VDDIO=VDDA=3.3V, VDDD=1.2V.
We set SGTL5000 in slave mode and SYS_FS=48k, MCLK_FREQ=256fs.
But no audio output.
(Same power supply was ok by using SGTL5000 in master mode by iMX6 driver,
but we change mclk to 12.288 , and using slave mode, no audio come out)
Anyone have the successful to use SGTL5000 in slave mode,
and can give us the setting sequence of I2C command ?
Or can some one can tell me how to debug by some I2C command ?
My SGTL5000 version is 0X11.
HI Kang
one can look at patch below
[alsa-devel] No sound captured with SGTL5000 on i.MX6 in I²S master mode
Best regards
igor
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Yes, applying the equivalent patch that Igor pointed out should fix the issue.
Which kernel version are you trying?
Regards,
Fabio Estevam
HI Kang
for configuring SGTL5000 to slave mode
please set register CHIP_I2S_CTRL 0x0006 bit MS=0x0 = Slave
Best regards
igor