Linux/PROCESSOR-SDK-AM437X: SPI communication issues

Part Number: PROCESSOR-SDK-AM437X

Tool/software: Linux

In which file to enable the SPI_SPIDEV for both SPI support and user mode support? 

Part Number: PROCESSOR-SDK-AM437X

Tool/software: Linux

Dear Sir/Madam,

I am using AM437x Starter Kit EVM as reference design for our product. I have added spi2 as following:

spi2_pins: pinmux_spi2_pins {
pinctrl-single,pins = <
AM4372_IOPAD(0xa60, PIN_INPUT | MUX_MODE3) /* spi2_clk */
AM4372_IOPAD(0xa64, PIN_OUTPUT | MUX_MODE3) /* spi2_d0 */
AM4372_IOPAD(0xa68, PIN_INPUT | MUX_MODE3) /* spi2_d1 */
AM4372_IOPAD(0xa6c, PIN_OUTPUT | MUX_MODE3) /* spi2_cs0 */
>;
};

&spi2 {
pinctrl-0 = <&spi2_pins>;
status = "okay";

spidev@2 {
compatible = "ti, tianma";
spi-max-frequency = <24000000>;
reg = <0>;
    };
};

when I try to use spidev_test to test the spi driver, I got 

can't open device: No such file or directory
Aborted (core dumped)

What I did wrong. What would be the parameters for spidev_test if my device configuration tree is correct. (I have tried several options but got same results).

Thanks

Part Number: PROCESSOR-SDK-AM437X

Tool/software: Linux

OK, here is all my changes. But I still don't see spi device in /dev.

aliases {
i2c0 = &i2c0;
i2c1 = &i2c1;
i2c2 = &i2c2;
serial0 = &uart0;
serial1 = &uart1;
serial2 = &uart2;
serial3 = &uart3;
serial4 = &uart4;
serial5 = &uart5;
ethernet0 = &cpsw_emac0;
ethernet1 = &cpsw_emac1;
spi0 = &qspi;
spi2 = &spi2;
};

spi2_pins: pinmux_spi2_pins {
pinctrl-single,pins = <
AM4372_IOPAD(0xa60, PIN_INPUT | MUX_MODE3) /* spi2_clk */
AM4372_IOPAD(0xa64, PIN_OUTPUT | MUX_MODE3) /* spi2_d0 */
AM4372_IOPAD(0xa68, PIN_INPUT | MUX_MODE3) /* spi2_d1 */
AM4372_IOPAD(0xa6c, PIN_OUTPUT | MUX_MODE3) /* spi2_cs0 */
>;
};

&spi2 {
pinctrl-0 = <&spi2_pins>;
status = "okay";

spidev@0 {
compatible = "rohm, dh228fv";
spi-max-frequency = <24000000>;
reg = <0>;
};
};

And tisdk_am437x_evm_defconfig changes:

#
# SPI Master Controller Drivers
#
CONFIG_SPI=y
# CONFIG_SPI_DEBUG is not set
CONFIG_SPI_MASTER=y
# CONFIG_SPI_ALTERA is not set
# CONFIG_SPI_AXI_SPI_ENGINE is not set
CONFIG_SPI_BITBANG=m
# CONFIG_SPI_CADENCE is not set
# CONFIG_SPI_DESIGNWARE is not set
CONFIG_SPI_GPIO=m
# CONFIG_SPI_FSL_SPI is not set
# CONFIG_SPI_OC_TINY is not set
CONFIG_SPI_OMAP24XX=y
CONFIG_SPI_TI_QSPI=y
# CONFIG_SPI_PXA2XX is not set
# CONFIG_SPI_PXA2XX_PCI is not set
# CONFIG_SPI_ROCKCHIP is not set
# CONFIG_SPI_SC18IS602 is not set
# CONFIG_SPI_XCOMM is not set
# CONFIG_SPI_XILINX is not set
# CONFIG_SPI_ZYNQMP_GQSPI is not set

#
# SPI Protocol Masters
#
CONFIG_SPI_SPIDEV=y
CONFIG_SPI_LOOPBACK_TEST=y
# CONFIG_SPI_TLE62X0 is not set
CONFIG_SPMI=y
# CONFIG_HSI is not set

Where did I do wrong or what I missed?

Thanks.