[Test Result] HD7770 fail (probe)

[ballsystemlord]

Flashrom does not see my HD7770 by MSI. Here it is at an online retailer:
https://www.amazon.com/MSI-Radeon-DisplayPort-PCI-Express-R7770-PMD1GD5/dp/B0089KJRLG
And MSI's official page:
https://www.msi.com/Graphics-card/R7770-PMD1GD5/Specification

flashrom is the latest from git.

# flashrom -pati_spi -VVV
flashrom  on Linux 4.14.83-gentoo-nopreempt-dav8 (x86_64)
flashrom is free software, get the source code at https://flashrom.org

flashrom was built with libpci 3.5.2, GCC 6.3.0 20170516, little endian
Command line (2 args): flashrom -pati_spi -VVV
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
Initializing ati_spi programmer
Error: No supported PCI device found.
Error: Programmer initialization failed.

The cards info:

# hwinfo -vvv --gfxcard
18: PCI 100.0: 0300 VGA compatible controller (VGA)             
  [Created at pci.378]
  Unique ID: VCu0.3uzdW9mLbiA
  Parent ID: _Znp.mxGZ4sT7tg6
  SysFS ID: /devices/pci0000:00/0000:00:02.0/0000:01:00.0
  SysFS BusID: 0000:01:00.0
  Hardware Class: graphics card
  Model: "Micro-Star International Co., Ltd. [MSI] R7770-PMD1GD5"
  Vendor: pci 0x1002 "ATI Technologies Inc"
  Device: pci 0x683d "Cape Verde XT [Radeon HD 7770/8760 / R7 250X]"
  SubVendor: pci 0x1462 "Micro-Star International Co., Ltd. [MSI]"
  SubDevice: pci 0x2710 "R7770-PMD1GD5"
  Driver: "amdgpu"
  Driver Modules: "amdgpu"
  Memory Range: 0xc0000000-0xcfffffff (ro,non-prefetchable)
  Memory Range: 0xfea00000-0xfea3ffff (rw,non-prefetchable)
  I/O Ports: 0xe000-0xefff (rw)
  Memory Range: 0x000c0000-0x000dffff (rw,non-prefetchable,disabled)
  IRQ: 27 (22853298 events)
  I/O Ports: 0x3c0-0x3df (rw)
  Module Alias: "pci:v00001002d0000683Dsv00001462sd00002710bc03sc00i00"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #32 (PCI bridge)

Primary display adapter: #18

The relevant version info:

% Linux Phenom-II-x6 4.14.83-gentoo-nopreempt-dav8 #4 SMP Tue Feb 26 06:21:52 UTC 2019 x86_64 GNU/Linux
% apt show libftdi-dev
Package: libftdi-dev
Version: 0.20-4
Priority: optional
Section: libdevel
Source: libftdi
Maintainer: Aurelien Jarno <aurel32@debian.org>
Installed-Size: 2000 kB
Depends: libftdi1 (= 0.20-4), libusb-dev (>= 0.1.11)
<snip>
% apt show pciutils
Package: pciutils
Version: 1:3.5.2-1
Priority: standard
Section: admin
Maintainer: Anibal Monsalve Salazar <anibal@debian.org>
Installed-Size: 1249 kB
Depends: libc6 (>= 2.14), libkmod2 (>= 5~), libpci3 (= 1:3.5.2-1)
%  apt show libusb-dev
Package: libusb-dev
Version: 2:0.1.12-30
Priority: optional
Section: libdevel
Source: libusb
Maintainer: Aurelien Jarno <aurel32@debian.org>
Installed-Size: 232 kB
Depends: libusb-0.1-4 (= 2:0.1.12-30), libc6-dev | libc-dev

My custom kernel is a known good configuration. It is very modular so if I need to load something special then I would not know. flashrom does detect my motherboards flashable chips.
I'm running flashrom from my root account in case it was not obvious.
I'm using Devuan (Debian) Linux.