Linux/BEAGLEBN: Problem while interfacing MMC card through SPI

Part Number:BEAGLEBN

Tool/software: Linux

Hi,

I am trying to interface MMC card via SPI (see attachment) to Beagle bone Black,

It is running linux-4.4.19 version,

I have selected the "MMC/SD/SDIO over SPI" from kernel config (CONFIG_MMC_SPI), and added following entries in the device tree.

        spi0_pins: pinmux_spi0_pins {
                pinctrl-single,pins = <
                  0x150 (PIN_OUTPUT_PULLUP | MUX_MODE0)  /* spi0_sclk, INPUT_PULLUP | MODE0 */
                  0x154 (PIN_INPUT_PULLDOWN | MUX_MODE0) /* spi0_d0, INPUT_PULLUP | MODE0 */
                  0x158 (PIN_OUTPUT_PULLUP | MUX_MODE0)  /* spi0_d1, OUTPUT_PULLUP | MODE0 */
                  0x15c (PIN_OUTPUT_PULLUP | MUX_MODE0)  /* spi0_cs0, OUTPUT_PULLUP | MODE0 */
                >;
        };


&spi0 {
        pinctrl-names = "default";
        pinctrl-0 = <&spi0_pins>;
        status = "okay";

        mmcsdcard@0 {
                compatible = "mmc-spi-slot";
                reg = <0>;
                voltage-ranges = <3200 3400>;
                spi-max-frequency = <2000000>;
        };
};

but after it boots , I cannot see node /dev/mmblk2 created 

from kernel log we can see that the driver has not initialized the MMC card,

root@am335x-evm:~# dmesg | grep spi
[    1.290601] of_get_named_gpiod_flags: can't parse 'gpios' property of node '/ocp/spi@48030000/mmcsdcard@0[0]'
[    1.290624] of_get_named_gpiod_flags: can't parse 'gpios' property of node '/ocp/spi@48030000/mmcsdcard@0[1]'
[    1.290832] mmc_spi spi1.0: mmc_spi: power up (22)
[    1.310113] mmc_spi spi1.0: mmc_spi: power on (22)
[    4.320330] mmc_spi spi1.0: mmc_spi:  clock to 400000 Hz, 0
[    4.340145] mmc_spi spi1.0: SD/MMC host mmc2, no WP, no poweroff, cd polling
[    4.347265] mmc_spi spi1.0:   mmc_spi: CMD52, resp R2/R5

Please let me know if anything , I am missing ?

Regards,

Nitesh

&spi0 {
        pinctrl-names = "default";
        pinctrl-0 = <&spi0_pins>;
        status = "okay";

        mmcsdcard@0 {
                compatible = "mmc-spi-slot";
                reg = <0>;
                voltage-ranges = <3200 3400>;
                spi-max-frequency = <2000000>;
        };
};