AM3352: MAX3421 SPI interface issue

Hi,

I am trying to interface MAX3421 usb controller with AM3352. I am not able to communicate with controller via spi0.

.config enabled "CONFIG_USB_MAX3421_HCD=m"

did insmod with  max3421-hcd.ko

Please find below dts file

&spi0 {

pinctrl-names = "default";
pinctrl-0 = <&spi0_pins_default>;
compatible = "maxim,max3421";
reg = <0>;
maxim,vbus-en-pin = <3 1>;
spi-max-frequency = <26000000>;
// interrupt-parent = <&PIC>; // what is this PIC
interrupts = <42>;
};

spi0_pins_default: spi0_pins_default {
pinctrl-single,pins = <
AM33XX_IOPAD(0x150, PIN_INPUT | MUX_MODE0) /* (A17) spi0_sclk.spi0_sclk */

AM33XX_IOPAD(0x154, PIN_INPUT | MUX_MODE0) /* (B17) spi0_d0.spi0_d0 */

AM33XX_IOPAD(0x158, PIN_INPUT | MUX_MODE0) /* (B16) spi0_d1.spi0_d1 */

AM33XX_IOPAD(0x15c, PIN_INPUT | MUX_MODE0) /* (A16) spi0_cs0.spi0_cs0 */
>;
};

Please let me know above dts is perfect or not.

What is this &PIC to define in .dts file.

Checked with oscilloscope sclk is not generating.

Please help me to solve this problem.

How to probe sclk of spi0 in kernel. To check in oscilloscope.

Regards,

Subramanya