SPI support for A64-OLinuXino board Allwinner A64 processor

[Gary Otten]

Thanks,  I have created the following overlay and tried a variety of other
things but I haven't been able to get spigen0.0 to appear in  /dev.



/* $FreeBSD$ */
/dts-v1/;
/plugin/;

/ {
        compatible = "allwinner,sun50i-a64";
};

&{/soc/spi at 1c68000} {

                status = "okay";

                spigen0: spigen0 {
                compatible = "freebsd,spigen";
                reg = <0>;
                spi-max-frequency = <500000>;
                status = "okay";
        };

};



Some diagnostics

-------------------------------------------------------
On Boot

Loading DTB overlays: 'sun50i-a64-spi-spidev'
/boot/dtb/overlays/sun50i-a64-spi-spidev.dtbo size=0x15c
applying DTB overlay '/boot/dtb/overlays/sun50i-a64-spi-spidev.dtbo'
..
....
.....

Autoloading module: aw_spi.ko
aw_spi0: <Allwinner SPI> mem 0x1c68000-0x1c68fff irq 29 on simplebus0
spibus0: <OFW SPI bus> on aw_spi0
spibus0: <unknown card> at cs 0 mode 0


-------------------------------------------------------
root@:/boot/dtb/overlays # kldstat
Id Refs Address                Size Name
 1    5 0xffff000000000000  144dda8 kernel
 2    1 0xffff000054c00000    41000 aw_spi.ko

 -------------------------------------------------------
root@:/boot/dtb/overlays # devinfo
..
...
  aw_spi0
        spibus0

-------------------------------------------------------
root@:/boot/dtb/overlays # devinfo

....
......
 Node 0x2f60: spi at 1c68000
      Node 0x309c: spigen0