AM4378: About changing the initial value of a device by device tree

Hi,

Our customer is developing with AM4378 using TI-LinuxSDK (v7.03.0.005).
They are using AudioCodec (TLV320AIC3104) and they have confirmed that they can output 44.1kHz audio data with the following dts when MCLK is 24MHz.

< device tree >
sound0: sound0 {
              compatible = "simple-audio-card";

              simple-audio-card,name = "TEST";
              simple-audio-card,widgets = "Line", "Line Out";
              simple-audio-card,routing =
                            "Line Out",           "LLOUT",
                            "Line Out",           "RLOUT";

              simple-audio-card,format = "i2s";
              simple-audio-card,bitclock-master = <&sound0_master>;
              simple-audio-card,frame-master = <&sound0_master>;

              simple-audio-card,cpu {
                            sound-dai = <&mcasp1>;
                            system-clock-frequency = <24000000>;
              };

              sound0_master: simple-audio-card,codec {
                            sound-dai = <&tlv320aic3104>;
                            system-clock-frequency = <24000000>;
              };
};


&i2c2 {
              status = "okay";

              pinctrl-names = "default";
              pinctrl-0 = <&i2c2_pins>;

              tlv320aic3104: tlv320aic3104@18 {
                            #sound-dai-cells = <0>;
                            compatible = "ti,tlv320aic3104";
                            reg = <0x18>;
                            status = "okay";

                            reset-gpios = <&gpio5 19 GPIO_ACTIVE_LOW>;

                            IOVDD-supply = <&dummy_vcodec_vdd>;
                            AVDD-supply = <&dummy_vcodec_vdd>;
                            DRVDD-supply = <&dummy_vcodec_vdd>;
                            DVDD-supply = <&vldo1>;
              };
};


&mcasp1 {
              #sound-dai-cells = <0>;
              pinctrl-names = "default", "sleep";
              pinctrl-0 = <&mcasp1_pins>;
              pinctrl-1 = <&mcasp1_sleep_pins>;

              status = "okay";

              op-mode = <0>;
              tdm-slots = <2>;
              serial-dir = <
                            0 1 0 0
              >;
              tx-num-evt = <32>;
              rx-num-evt = <32>;
};

They are trying to change the MCLK of the AudioCodec to 12 MHz (output is 44.1 kHz).
They want to do it from DeviceTree for now, CLKOUT1SEL0DIV (bit[21-20]) in the PRCM_CM_CLKOUT1_CTRL register to set the PRCM output to 12MHz.
They add assigned-clocks, assigned-clock-parents, and assigned-clock-rates to the tlv320aic3104 property in the device tree and
They tried to set the OSC clock (24MHz) to 1/2 the OSC clock (12MHz).

tlv320aic3104: tlv320aic3104@18 {
    #sound-dai-cells = <0>;
    compatible = "ti,tlv320aic3104";
    reg = <0x18>;
    status = "okay";

    assigned-clocks = <&clkout1_mux_ck>;                    <-- Add
    assigned-clock-parents = <&clkout1_osc_div_ck>;         <-- Add
    assigned-clock-rates = <12000000>;                      <-- Add

    reset-gpios = <&gpio5 19 GPIO_ACTIVE_LOW>;

    IOVDD-supply = <&dummy_vcodec_vdd>;
    AVDD-supply = <&dummy_vcodec_vdd>;
    DRVDD-supply = <&dummy_vcodec_vdd>;
    DVDD-supply = <&vldo1>;
};

They assumed that with this modification they could set CLKOUT1SEL0DIV (bit[21-20]) in the PRCM_CM_CLKOUT1_CTRL register to b01, but it remained at its default value (b00).
Is there a mistake in the setting position or content?

Best Regards,

Kouji Nishigata