Linux/TLV320AIC3XSW-LINUX: TLV320AIC as a master or as a slave

Tool/software: Linux

Hi Everyone..

We are using tlv320aic3x codec in our project and it is playing well.

I have a confusion regarding the configuration of codec..i.e whether it is acting as a master or a slave.

My device tree is :

&mcasp0 {
#sound-dai-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&mcasp0_pins>;
status = "okay";
op-mode = <0>; /* MCASP_IIS_MODE */
tdm-slots = <2>;
serial-dir = < /* 0: INACTIVE, 1: TX, 2: RX */
1 2 0 0 /* Changing from 0 0 1 0 to 1 2 0 0 */

>;

tx-num-evt = <32>;
rx-num-evt = <32>;
};

mcasp0_pins: mcasp0_pins {

pinctrl-single,pins = <

AM33XX_IOPAD(0x860, PIN_INPUT_PULLDOWN | MUX_MODE6) /* mcasp0_aclkx*/
AM33XX_IOPAD(0x864, PIN_INPUT_PULLDOWN | MUX_MODE6) /* mcasp0_fsx*/
AM33XX_IOPAD(0x868, PIN_OUTPUT_PULLDOWN | MUX_MODE6) /* mcasp0_axr0*/
AM33XX_IOPAD(0x86c, PIN_INPUT_PULLDOWN | MUX_MODE6) /* mcasp0_axr1 */
>;
};

sound {
compatible = "simple-audio-card";
simple-audio-card,name = "TI BeagleBone Black";
simple-audio-card,widgets =
"Headphone", "Headphone Jack",
"Line", "Line In";
simple-audio-card,routing =
"Headphone Jack", "HPLOUT",
"Headphone Jack", "HPROUT",
"LINE1L", "Line In",
"LINE1R", "Line In";
simple-audio-card,format = "dsp_b";
simple-audio-card,bitclock-master = <&sound_master>;
simple-audio-card,frame-master = <&sound_master>;
simple-audio-card,bitclock-inversion;

simple-audio-card,cpu {
sound-dai = <&mcasp0>;
};

sound_master:simple-audio-card,codec {
sound-dai = <&tlv320aic3106>;
system-clock-frequency = <24000000>;
};

};

As it is written above..bitclock and frame master is the codec..but in the pin muxing we are using ACLKX and FSX which are for Transmit.