On 06/29/2017 01:37 PM, Fabio Estevam wrote:
Hi Gianluca,
On Wed, Jun 28, 2017 at 12:34 PM, gianluca
<gianlucarenzi@xxxxxxxxxxxxxxxxxxx> wrote:
Hello list,
I have some issue using the sgtl5000 on two custom boards based with iMX6.
One board has iMX6DL and the other has iMX6QP.
The issue is I have a (dramatically high) strange value on mixer settings
(looks like a int32 limit or similar)
This is the output of amixer:
# amixer
Simple mixer control 'Headphone',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 127
Mono:
Front Left: Playback 0 [2147483647%] [-51.50dB] [on]
Front Right: Playback 0 [2147483647%] [-51.50dB] [on]
Double check the codec hardware: is I2C communication working,are you
able to dump the SGTL5000 registers,
The i2c communication is working:
# i2cdetect -y -a -r 0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: 00 -- -- -- -- -- -- -- -- -- UU -- -- -- -- --
10: -- -- -- -- -- -- -- -- 18 -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- --
50: UU UU -- -- 54 -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
sgtl-5000 is 0xa address like specified in the device-tree:
&i2c1 {
clock-frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c1>;
status = "okay";
sgtl5000: codec@0a {
compatible = "fsl,sgtl5000";
reg = <0x0a>;
clocks = <&clks IMX6QDL_CLK_CKO>;
VDDA-supply = <®_3p3v>;
VDDIO-supply = <®_3p3v>;
VDDD-supply = <®_1p2v>;
status = "okay";
};
I did not check the voltage supply yet, but during bootup the kernel is
saying:
[ 0.620196] sgtl5000 0-000a: sgtl5000 revision 0x11
So I suppose (at least) the Codec is powered and the i2c lines are
working correctly.
[ 0.650568] fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW
[ 0.673984] imx-sgtl5000 sound: sgtl5000 <-> 2028000.ssi mapping ok
It looks like some basic initialization stuff and probing are working
good...
[ 0.698683] ALSA device list:
[ 0.698689] #0: imx6-ek360-sgtl5000
...and the device is added to ALSA device-list.
In the device-tree the sound node is so configured:
sound {
compatible = "fsl,imx-audio-sgtl5000";
model = "imx6-ek360-sgtl5000";
ssi-controller = <&ssi1>;
audio-codec = <&sgtl5000>;
audio-routing =
"MIC_IN", "Mic Jack",
"Mic Jack", "Mic Bias",
"Headphone Jack", "HP_OUT";
mux-int-port = <1>;
mux-ext-port = <4>;
micbias-resistor-k-ohms = <2>;
micbias-voltage-m-volts = <3000>;
status = "okay";
};
I do not know about the mux-int-port or mux-ext-port. The only thing I
know is the hardware guy told me he routed the ssi (CLK and DAT) to:
AUD3_TXC_R (i2s_sclk)
AUD3_TXD (i2s_din)
AUD3_TXFS (i2s_lrclk)
AUD3_RXD (i2s_dout)
SYS_MCLK (GPIO_0_CLKO sys_mclk)
So I configured the pinmux for audio in the following way:
pinctrl_audmux: audmuxgrp {
fsl,pins = <
/* SGTL5000 sys_mclk */
MX6QDL_PAD_GPIO_0__CCM_CLKO1 0x030b0
MX6QDL_PAD_CSI0_DAT4__AUD3_TXC 0x130b0
MX6QDL_PAD_CSI0_DAT5__AUD3_TXD 0x110b0
MX6QDL_PAD_CSI0_DAT6__AUD3_TXFS 0x130b0
MX6QDL_PAD_CSI0_DAT7__AUD3_RXD 0x130b0
>;
};
Are the values correct for that?
I was looking at the device-tree for imx6qdl-nit6xlite.dtsi because they
are using the same pinout as ours.
check the codec power supplies,
MCLK, etc.
How can I check or dump the SGTL5000 registers?
Regards,
--
Eurek s.r.l. |
Electronic Engineering | http://www.eurek.it
via Celletta 8/B, 40026 Imola, Italy | Phone: +39-(0)542-609120
p.iva 00690621206 - c.f. 04020030377 | Fax: +39-(0)542-609212
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