KrzyPacu

I did so, but openvfd still doesn't work and can't compile.

And how to compile openvfd with this patch? How to apply this patch to openvfd?

Is it enough to remove these entries from the dts file and recompile it to dtb? 3535-3540 openvfd { compatible = "open,vfd"; dev_name = "openvfd"; status = "okay"; phandle = <0x143>; }; 4031 openvfd = "/openvfd"; meson-sm1-x96-air-gbit.dts

But how do I do that? These are the original Armbian .dtb entries. I didn't add anything and I don't know how to remove it.

Here are the actions I take with the dtb file. Maybe I'm doing something wrong here? # cd /home/INSTALKI # git clone https://github.com/jefflessard/tm16xx-display.git # cd tm16xx-display # cp /boot/dtb/amlogic/meson-sm1-x96-air-gbit.dtb original.dtb # make hk1-box.dtb ORIGINAL_DTB=original.dtb # cp release/hk1-box.dtb /boot/dtb/amlogic/meson-sm1-x96-air-gbit.dtb # reboot

In the /proc/device-tree directory I do not see any "tm16xx" entry but there is an "openvfd" entry. Attached is the /proc/device-tree directory and the dmesg output. device-tree.tar.gz dmseg.txt

Yes it worked fine on the other Armbian OS. Unfortunately it still doesn't work. android-vontar-x3.dts

# make -j 4 make -C /lib/modules/6.12.33-current-meson64/build M=/home/INSTALKI/linux_openvfd/driver modules make[1]: Enter the directory '/usr/src/linux-headers-6.12.33-current-meson64' CC [M] /home/INSTALKI/linux_openvfd/driver/protocols/i2c_sw.o CC [M] /home/INSTALKI/linux_openvfd/driver/protocols/i2c_hw.o CC [M] /home/INSTALKI/linux_openvfd/driver/protocols/spi_sw.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/dummy.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/seg7_ctrl.o /home/INSTALKI/linux_openvfd/driver/controllers/seg7_ctrl.c:11:6: warning: no previous prototype for ‘transpose8rS64’ [-Wmissing-prototypes] 11 | void transpose8rS64(unsigned char* A, unsigned char* B) { | ^~~~~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/controllers/seg7_ctrl.c:40:8: warning: no previous prototype for ‘seg7_write_display_data’ [-Wmissing-prototypes] 40 | size_t seg7_write_display_data(const struct vfd_display_data *data, unsigned short *raw_wdata, size_t sz) | ^~~~~~~~~~~~~~~~~~~~~~~ CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/fd628.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/fd650.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/hd44780.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/gfx_mono_ctrl.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/ssd1306.o CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/pcd8544.o /home/INSTALKI/linux_openvfd/driver/controllers/gfx_mono_ctrl.c:239:6: warning: no previous prototype for ‘transpose_buffer’ [-Wmissing-prototypes] 239 | void transpose_buffer(unsigned char *buffer, const struct rect *rect) | ^~~~~~~~~~~~~~~~ CC [M] /home/INSTALKI/linux_openvfd/driver/controllers/il3829.o CC [M] /home/INSTALKI/linux_openvfd/driver/openvfd_drv.o /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:44:7: warning: "CONFIG_AMLOGIC_LEGACY_EARLY_SUSPEND" is not defined, evaluates to 0 [-Wundef] 44 | #elif CONFIG_AMLOGIC_LEGACY_EARLY_SUSPEND | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c: In function ‘register_openvfd_driver’: /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:400:75: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body] 400 | pr_dbg("%s: Succeeded to add openvfd module \n", __func__); | ^ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c: At top level: /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:622:19: warning: no previous prototype for ‘gpiochip_find’ [-Wmissing-prototypes] 622 | struct gpio_chip *gpiochip_find(void *data, | ^~~~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:669:5: warning: no previous prototype for ‘evaluate_pin’ [-Wmissing-prototypes] 669 | int evaluate_pin(const char *name, const unsigned int *vfd_arg, struct vfd_pin *pin, unsigned char enable_skip_evaluation) | ^~~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:752:6: warning: no previous prototype for ‘get_pin_from_dt’ [-Wmissing-prototypes] 752 | void get_pin_from_dt(const char *name, const struct platform_device *pdev, struct vfd_pin *pin) | ^~~~~~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:763:5: warning: no previous prototype for ‘request_pin’ [-Wmissing-prototypes] 763 | int request_pin(const char *name, struct vfd_pin *pin, unsigned char enable_skip) | ^~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:1034:19: error: initialization of ‘void (*)(struct platform_device *)’ from incompatible pointer type ‘int (*)(struct platform_device *)’ [-Werror=incompatible-pointer-types] 1034 | .remove = openvfd_driver_remove, | ^~~~~~~~~~~~~~~~~~~~~ /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:1034:19: note: (near initialization for ‘openvfd_driver.<anonymous>.remove’) /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c: In function ‘print_param_debug’: /home/INSTALKI/linux_openvfd/driver/openvfd_drv.c:611:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=] 611 | } | ^ cc1: some warnings being treated as errors make[3]: *** [scripts/Makefile.build:229: /home/INSTALKI/linux_openvfd/driver/openvfd_drv.o] Error 1 make[2]: *** [/usr/src/linux-headers-6.12.33-current-meson64/Makefile:1945: /home/INSTALKI/linux_openvfd/driver] Error 2 make[1]: *** [Makefile:224: __sub-make] Error 2 make[1]: Leaving the directory '/usr/src/linux-headers-6.12.33-current-meson64' make: *** [Makefile:5: modules] Error 2 I'm trying to compile the "openvfd" driver but the compilation ends with an error. I'm a complete noob at these things and I really want this driver so I'd be very grateful for any help.

I did everything again, as you wrote and it still doesn't work. So it looks like my TVbox has a different LED controller?

# dmesg | grep tm16xx [ 11.231194] tm16xx: loading out-of-tree module taints kernel. [ 11.233242] tm16xx 1-0024: Failed to set brightness: -6 [ 11.236531] tm16xx 1-0024: Failed to initialize display: -6

Will disassembling the TV box help get this display working? The TV box looks like it's glued together, but if that helps, I can open it.

hk1-x3.conf I haven't opened my TV box but I saw a picture and it seems to me that the controller is "FD6551"

Vontar X3 is the same as hk1-x3 and I used the one from hk1-x3. Here are the pictures because I didn't open mine: https://github.com/ophub/amlogic-s9xxx-armbian/issues/1006

# dmesg | grep tm16xx [ 21.189046] tm16xx: loading out-of-tree module taints kernel. [ 21.190997] tm16xx 1-0024: Failed to set brightness: -6 [ 21.194407] tm16xx 1-0024: Failed to initialize display: -6

# modprobe -r tm16xx modprobe: ERROR: ../libkmod/libkmod-module.c:856 kmod_module_remove_module() could not remove 'tm16xx': Device or resource busy # dmesg # modprobe tm16xx # modprobe -r tm16xx modprobe: ERROR: ../libkmod/libkmod-module.c:856 kmod_module_remove_module() could not remove 'tm16xx': Device or resource busy