SK-AM62: AM62x SKEVM McSPI Interface

Tool/software:

Hello Support Team,

With AM62x SKEVM board, McSPI interface is being done in order to use EXP_SPI0 in the board, but there is no device name in /dev/ like /dev/spidev0.0 after loading dtbo as an overlay.
What has been done...

1. 'k3-am625-sk-mcspi-loopback.dtso' is used.

2. menuconfig has been changed 'McSPI' enabled.

Here is the dt source

#include <dt-bindings/gpio/gpio.h>
#include "k3-pinctrl.h"

&main_pmx0 {
        main_spi0_pins_default: main-spi0-pins-default {
                pinctrl-single,pins = <
                        AM62X_IOPAD(0x01bc, PIN_INPUT, 0) /* (A14) SPI0_CLK */
                        AM62X_IOPAD(0x01c0, PIN_INPUT, 0) /* (B13) SPI0_D0 */
                        AM62X_IOPAD(0x01c4, PIN_INPUT, 0) /* (B14) SPI0_D1 */
                        AM62X_IOPAD(0x01b4, PIN_INPUT, 0) /* (A13) SPI0_CS0 */
                >;
        };
};

&main_i2c1 {
        gpio@22 {
                en_rpi_3v3 {
                        gpio-hog;
                        gpios = <5 GPIO_ACTIVE_HIGH>;
                        output-high;
                        line-name = "EXP_PS_3V3_EN";
                };
        };
};

&main_spi0 {
        status = "okay";
        #address-cells = <1>;
        #size-cells = <0>;
        pinctrl-0 = <&main_spi0_pins_default>;
        pinctrl-names = "default";
        spidev@0 {
                /*
                 * Using spidev compatible is warned loudly,
                 * thus use another equivalent compatible id
                 * from spidev.
                 */
                compatible = "rohm,dh2228fv";
                spi-max-frequency = <24000000>;
                reg = <0>;
        };
};

Here is the result on the shell of the board.

root@am62xx-evm:~# ls /dev/spi*
ls: cannot access '/dev/spi*': No such file or directory
root@am62xx-evm:~# dmesg | grep spi
[    0.000000] Kernel command line: console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000 mtdparts=spi-nand0:512k(ospi_nand.tiboot3),2m(ospi_nand.tispl),4m(ospi_nand.u-boot),256k(ospi_nand.env),256k(ospi_nand.env.backup),98048k@32m(ospi_nand.rootfs),256k@130816k(ospi_nand.phypattern) root=PARTUUID=076c4a2a-02 rw rootfstype=ext4 rootwait
[    1.358534] spi-nor spi0.0: s28hs512t (65536 Kbytes)
[    1.363665] 7 fixed-partitions partitions found on MTD device fc40000.spi.0
[    1.370630] Creating 7 MTD partitions on "fc40000.spi.0":
[    1.376030] 0x000000000000-0x000000080000 : "ospi.tiboot3"
[    1.383046] 0x000000080000-0x000000280000 : "ospi.tispl"
[    1.389733] 0x000000280000-0x000000680000 : "ospi.u-boot"
[    1.396379] 0x000000680000-0x0000006c0000 : "ospi.env"
[    1.402783] 0x0000006c0000-0x000000700000 : "ospi.env.backup"
[    1.409816] 0x000000800000-0x000003fc0000 : "ospi.rootfs"
[    1.416570] 0x000003fc0000-0x000004000000 : "ospi.phypattern"

Thanks in advance,

Kal Kim