Messages in this thread Patch in this message | | | Date | Sat, 25 Jul 2015 15:17:13 +0200 | From | Lars-Peter Clausen <> | Subject | Re: Nokia N900 - audio TPA6130A2 problems |
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On 07/25/2015 12:28 PM, Pali Rohár wrote: > Hello, > > sometimes after rebooting Nokia N900 initializing alsa audio fails. > Here output from dmesg log when it happen: > > [ 6.925140] tpa6130a2 2-0060: Write failed > [ 6.929534] tpa6130a2 2-0060: Failed to initialize chip > [ 6.935272] tpa6130a2: probe of 2-0060 failed with error -121 > [ 7.624237] rx51-audio n900-audio: Failed to add TPA6130A2 controls > [ 7.635101] rx51-audio n900-audio: ASoC: failed to init TLV320AIC34: -19 > [ 7.645874] rx51-audio n900-audio: ASoC: failed to instantiate card -19 > [ 7.665740] rx51-audio n900-audio: snd_soc_register_card failed (-19) > [ 8.063049] ALSA device list: > [ 8.070343] No soundcards found. > > Any idea what to do?
Looks like the chip is not responding. Try to add a small delay after powerup to give the device to be fully ready, something like the following:
--- a/sound/soc/codecs/tpa6130a2.c +++ b/sound/soc/codecs/tpa6130a2.c @@ -152,6 +152,8 @@ static int tpa6130a2_power(u8 power) if (data->power_gpio >= 0) gpio_set_value(data->power_gpio, 1);
+ msleep(5); + data->power_state = 1; ret = tpa6130a2_initialize(); if (ret < 0) {
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