petronel

@paradigmanbelow are messages from my box. Looks very similar but I have a different controller. I cannot help more...
From your messages - maybe this is the problem:

 
# dmesg | grep -i openvfd [ 351.437611] openvfd: loading out-of-tree module taints kernel. [ 351.438416] openvfd: module verification failed: signature and/or required key missing - tainting kernel [ 351.440096] OpenVFD: Version: V1.4.0 [ 351.440121] OpenVFD: vfd_gpio_clk: Empty. [ 351.440127] OpenVFD: vfd_gpio_dat: Empty. [ 351.440132] OpenVFD: vfd_gpio_stb: Empty. [ 351.440144] OpenVFD: vfd_gpio0: #0 = 0x00; #1 = 0x00; #2 = 0xFF; [ 351.440152] OpenVFD: vfd_gpio1: #0 = 0x00; #1 = 0x00; #2 = 0xFF; [ 351.440162] OpenVFD: vfd_gpio2: #0 = 0x00; #1 = 0x00; #2 = 0xFF; [ 351.440171] OpenVFD: vfd_gpio3: #0 = 0x00; #1 = 0x00; #2 = 0xFF; [ 351.440180] OpenVFD: vfd_gpio_protocol: #0 = 0x00; #1 = 0x00; [ 351.440188] OpenVFD: vfd_chars: Empty. [ 351.440193] OpenVFD: vfd_dot_bits: Empty. [ 351.440200] OpenVFD: vfd_display_type: Empty. [ 351.440216] OpenVFD: Detected gpio chips: gpio0, gpio1, gpio2, gpio3, ff100000.syscon:gpio. [ 351.440222] OpenVFD: Failed to verify VFD configuration file, attempt using device tree as fallback. [ 351.441087] OpenVFD: openvfd_gpio_clk: pin = 83, flags = 0x00 [ 351.441111] OpenVFD: openvfd_gpio_dat: pin = 86, flags = 0x00 [ 351.441138] OpenVFD: openvfd_gpio_stb: pin = 82, flags = 0x00 [ 351.441150] OpenVFD: openvfd_gpio0 pin entry not found [ 351.441156] OpenVFD: openvfd_gpio1 pin entry not found [ 351.441162] OpenVFD: openvfd_gpio2 pin entry not found [ 351.441171] OpenVFD: openvfd_gpio3 pin entry not found [ 351.441176] OpenVFD: chars_prop = 00000000c43836d4 [ 351.441185] OpenVFD: chars_prop->length = 5 [ 351.441189] OpenVFD: char #0: 4 [ 351.441195] OpenVFD: char #1: 0 [ 351.441202] OpenVFD: char #2: 1 [ 351.441208] OpenVFD: char #3: 2 [ 351.441213] OpenVFD: char #4: 3 [ 351.441222] OpenVFD: dot_bits_prop = 000000001c63f005 [ 351.441227] OpenVFD: dot_bits_prop->length = 7 [ 351.441233] OpenVFD: dot_bit #0: 0 [ 351.441240] OpenVFD: dot_bit #1: 1 [ 351.441246] OpenVFD: dot_bit #2: 2 [ 351.441251] OpenVFD: dot_bit #3: 3 [ 351.441258] OpenVFD: dot_bit #4: 4 [ 351.441262] OpenVFD: dot_bit #5: 5 [ 351.441269] OpenVFD: dot_bit #6: 6 [ 351.441277] OpenVFD: display.type = 3, display.controller = 0, pdata->dev->dtb_active.display.flags = 0x00 [ 351.442023] OpenVFD: Select FD628 controller [ 351.442217] OpenVFD: SW SPI 3-wire interface intialized (LSB mode)