Unexpected behavior on SPI Device on kernel 4.19

[juvinski]

Hi.

I detected this problem.
I have 2 SPI Devices on the same bus (spidev2.0 and spidev2.1).
On kernel 4.14 is working fine. After the upgrade to 4.19 I cannot use both devices. If I tried to initialize the first device(on CS1) and after that I tried to initialize the second device (on CS0) I cannot initilize this device - is like the SPIbus is in on wait or in block state.
There is a way do debug the spi bus ? There is a way to check what is happening ? I'm using ardupilot software and everything as I said is working on 4.14 but in 4.19 not.

Thanks
root@beaglebone:# /opt/scripts/tools/version.sh
git:/opt/scripts/:[20c080bc91f243ef852a704758788a31083b0f9e]
eeprom:[A335BNLTBBG1BBG219100724]
model:[TI_AM335x_BeagleBone_Green]
dogtag:[BeagleBoard.org Debian Stretch Console Image 2020-09-21]
bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot 2019.04-00002-gc9b3922522]:[location: dd MBR]
UBOOT: Booted Device-Tree:[am335x-boneblack-uboot-univ.dts]
UBOOT: Loaded Overlay:[AM335X-PRU-UIO-00A0]
UBOOT: Loaded Overlay:[BB-ADC-00A0]
UBOOT: Loaded Overlay:[BB-BONE-eMMC1-01-00A0]
UBOOT: Loaded Overlay:[M-BB-BBG-00A0]
kernel:[4.19.142-bone-rt-r56]
/boot/uEnv.txt Settings:
uboot_overlay_options:[enable_uboot_overlays=1]
uboot_overlay_options:[disable_uboot_overlay_video=1]
uboot_overlay_options:[disable_uboot_overlay_audio=1]
uboot_overlay_options:[disable_uboot_overlay_wireless=1]
uboot_overlay_options:[uboot_overlay_pru=AM335X-PRU-UIO-00A0.dtbo]
uboot_overlay_options:[enable_uboot_cape_universal=1]
pkg check: to individually upgrade run: [sudo apt install --only-upgrade ]
pkg:[bb-cape-overlays]:[4.14.20201021.1-0stretch+20201021]
pkg:[bb-customizations]:[1.20200826.0-0stretch+20200826]
pkg:[bb-usb-gadgets]:[1.20200504.0-0stretch+20200504]
pkg:[bb-wl18xx-firmware]:[1.20200813.1-0stretch+20200813]
pkg:[kmod]:[23-2rcnee1stretch+20171005]
WARNING:pkg:[librobotcontrol]:[NOT_INSTALLED]
pkg:[firmware-ti-connectivity]:[20190717-2rcnee1~stretch+20200305]
groups:[debian : debian adm kmem dialout cdrom floppy audio dip video plugdev users systemd-journal input bluetooth netdev gpio admin spi iio i2c docker tisdk weston-launch xenomai cloud9ide pwm eqep remoteproc]
cmdline:[console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 lpj=1990656 rng_core.default_quality=100 quiet]
dmesg | grep remote
[ 1.047028] remoteproc remoteproc0: wkup_m3 is available
[ 1.152080] remoteproc remoteproc0: powering up wkup_m3
[ 1.152101] remoteproc remoteproc0: Booting fw image am335x-pm-firmware.elf, size 217168
[ 1.154288] remoteproc remoteproc0: remote processor wkup_m3 is now up
dmesg | grep pru
dmesg | grep pinctrl-single
[ 0.606521] pinctrl-single 44e10800.pinmux: 142 pins, size 568
dmesg | grep gpio-of-helper
[ 0.617964] gpio-of-helper ocp:cape-universal: ready
END