On 02/10/2013 04:21 PM, Anil Kumar wrote:
Hi All,
I am working on Devkit8000 and adding DT support for that. I am trying to add sound DT node support for this boards. I have nearly done with this but facing issue on record. I do not have much knowledge of twl4030 audio codec but with small Hack[1] (as MainMic connected to the input jack) i am able to record sound on Devkit8000. I do not know that MICBIAS1_EN can be enable by amixer commands. Could you please help me to get out of this ?
You need to pass the routing information via DT for Devkit8000. This is not done for the BeagleBoard since it works without it (no need for MICBIAS for example)
- Hack [1]
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c index 63b280b..6780681 100644 --- a/sound/soc/codecs/twl4030.c +++ b/sound/soc/codecs/twl4030.c @@ -1473,7 +1473,7 @@ static const struct snd_soc_dapm_widget twl4030_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("micbias2 select", TWL4030_REG_MICBIAS_CTL, 6, 0, NULL, 0),
SND_SOC_DAPM_MICBIAS("Mic Bias 1", TWL4030_REG_MICBIAS_CTL, 0, 0),
SND_SOC_DAPM_MICBIAS("Mic Bias 1", TWL4030_REG_MICBIAS_CTL, 0, 1),
Yes, this is HACK and it is wrong at the same time.
SND_SOC_DAPM_MICBIAS("Mic Bias 2", TWL4030_REG_MICBIAS_CTL, 1, 0), SND_SOC_DAPM_MICBIAS("Headset Mic Bias", TWL4030_REG_MICBIAS_CTL, 2, 0),
- Sound DT node patch for Devkit8000
diff --git a/arch/arm/boot/dts/omap3- devkit8000.dts b/arch/arm/boot/dts/omap3-devkit8000.dts index dc59272..5f3eec0 100644 --- a/arch/arm/boot/dts/omap3-devkit8000.dts +++ b/arch/arm/boot/dts/omap3-devkit8000.dts @@ -44,11 +44,22 @@ };
};
sound {compatible = "ti,omap-twl4030";ti,model = "devkit8000";ti,mcbsp = <&mcbsp2>;ti,codec = <&twl_audio>;
Here you should have something like: ti,audio-routing = "Ext Spk", "PREDRIVEL", "Ext Spk", "PREDRIVER", "MAINMIC", "Main Mic", "Main Mic", "Mic Bias 1";
So you connect the MicBias1 to Main Mic. When you start playback MicBias1 will be turned on for you.
};};
&omap3_pmx_core { pinctrl-names = "default";
pinctrl-0 = <&i2c1_pins>;
pinctrl-0 = <&i2c1_pins&mcbsp2_pins>; leds_pins: pinmux_led_pins { pinctrl-single,pins = <@@ -65,6 +76,21 @@ 0x18c 0x118 /* I2C1_SDA */ >; };
mcbsp2_pins: pinmux_mcbsp2_pins {pinctrl-single,pins = </** MCBSP2_FSX, OMAP_MUX_MODE0 | OMAP_PIN_INPUT,* MCBSP2_CLKX, OMAP_MUX_MODE0 | OMAP_PIN_INPUT*/0x10c 0x01000100/** MCBSP2_DR, OMAP_MUX_MODE0 | OMAP_PIN_INPUT,* MCBSP2_DX, OMAP_MUX_MODE0 | OMAP_PIN_OUTPUT*/0x110 0x00000100>;};};
&i2c1 { @@ -74,6 +100,14 @@ reg = <0x48>; interrupts = <7>; /* SYS_NIRQ cascaded to intc */ interrupt-parent = <&intc>;
twl_audio: audio {compatible = "ti,twl4030-audio";codec {ti,ramp_delay_value = <3>;ti,offset_cncl_path = <0x31>;};}; };};
- Playback amixer commands amixer set 'PredriveR Mixer AudioR2' on amixer set 'PredriveL Mixer AudioL2' on amixer set PreDriv 100 unmute amixer set 'DAC2 Digital Fine' 100
Thanks, Anil