Hi, guys! I had S78 box, this is a rikomagic rkm mk25 clone on S922x. I got working the HBS658 vfd. Below is a chunk from dtb and config:
hbs658 {
compatible = "amlogic, hbs658";
dev_name = "hbs658";
status = "okay";
gpio-scl = <0x2c 0x17 0x0>;
gpio-sda = <0x2c 0x18 0x0>;
vfd.conf:
vfd_gpio_clk='0,0x17,0x10'
vfd_gpio_dat='0,0x18,0x10'
vfd_gpio_stb='0,0,0xFF'
vfd_chars='4,0,1,2,3'
vfd_dot_bits='0,1,2,3,4,5,6'
vfd_display_type='0x06,0x00,0x00,0x04'