SPI's CS active low state.

Hi! I am using Mainline kernel 4.14.19-sunxi Debian stretch. I am trying to get SPI's CS pin active low state without luck. I tried it with precompilied image and built from source both. Used HW is orangepi zero.

Here is armbianEnv.txt file:

$ cat /boot/armbianEnv.txt 
verbosity=1
logo=disabled
console=both
disp_mode=1920x1080p60
overlay_prefix=sun8i-h3
overlays=usbhost2 usbhost3 spi-spidev spi-add-cs1
rootdev=UUID=39059033-9dc5-4bc4-a4d2-61ef949d5b21
rootfstype=ext4
param_spidev_spi_bus=1
param_spidev_spi_cs=1

usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u

Here is sun8i-h3-spi-spidev.dts file that I converted to dtbo:

/dts-v1/;

/ {
        compatible = "allwinner,sun8i-h3";

        fragment@0 {
                target-path = "/aliases";

                __overlay__ {
                        spi0 = "/soc/spi@01c68000";
                        spi1 = "/soc/spi@01c69000";
                };
        };

        fragment@1 {
                target = <0xffffffff>;

                __overlay__ {
                        #address-cells = <0x1>;
                        #size-cells = <0x0>;

                        spidev {
                                compatible = "spidev";
                                status = "disabled";
                                reg = <0x0>;
                                spi-max-frequency = <0xf4240>;
                        };
                };
        };

        fragment@2 {
                target = <0xffffffff>;

                __overlay__ {
                        #address-cells = <0x1>;
                        #size-cells = <0x0>;

                        spidev {
                                compatible = "spidev";
                                status = "ok";
                                 reg = <0x0>;
                                spi-max-frequency = <0xf4240>;
                        };
                };
        };

        __fixups__ {
                spi0 = "/fragment@1:target:0";
                spi1 = "/fragment@2:target:0";
        };
};

I see /dev/spidev1.1 device. I see that all overlays are loaded:

04 bytes read in 1589 ms (0 Bytes/s)
Applying kernel provided DT overlay sun8i-h3-usbhost2.dtbo
504 bytes read in 1614 ms (0 Bytes/s)
Applying kernel provided DT overlay sun8i-h3-usbhost3.dtbo
780 bytes read in 1005 ms (0 Bytes/s)
Applying kernel provided DT overlay sun8i-h3-spi-spidev.dtbo
1215 bytes read in 1530 ms (0 Bytes/s)
Applying kernel provided DT overlay sun8i-h3-spi-add-cs1.dtbo

How I test it:

al@orangepizero:~$ sudo ./spi2
spi mode: 0x0
bits per word: 8
max speed: 500000 Hz (500 KHz)
al@orangepizero:~$ sudo ./spi2 -C
spi mode: 0x4
bits per word: 8
max speed: 500000 Hz (500 KHz)
al@orangepizero:~$ sudo ./spi2 -N
can't set spi mode: Invalid argument
Aborted

Unfortunately I still see on oscilloscope diagram that CS pin is active HIGH while I need it to be active LOW: https://cloud.mail.ru/public/GSQU/6YarzxVUU

I tried to add SPI-CS-HIGH in spi-spidev.dts for SPI, I tried to change reg<0> to reg<1>. Nothing helped me.

armbian / build

SPI's CS active low state. #893