)]}'
{
  "log": [
    {
      "commit": "450c24cbf61b758ffa39cde702015c99eb46a8f0",
      "tree": "7ea770b5c3f41d73f1e4c7bc25139b7083b427ac",
      "parents": [
        "3f86b0b121ff5f07d5d1ab5c1b210ea92620bb30"
      ],
      "author": {
        "name": "Angel Pons",
        "email": "th3fanbus@gmail.com",
        "time": "Wed May 13 00:49:52 2020 +0200"
      },
      "committer": {
        "name": "Nico Huber",
        "email": "nico.h@gmx.de",
        "time": "Sun Jul 19 18:04:00 2020 +0000"
      },
      "message": "haswell: Make VGA on FDI work\n\nAttempting to light up a 1920x1080 monitor through VGA with libgfxinit\non Haswell would either hang the system or show garbage on the monitor.\nThis was due to two different problems around FDI initialization code.\n\nThe system would only hang if libgfxinit was the first program to light\nup a monitor on VGA. This is because no one had performed the required\nFDI mPHY initialization that is described on the Haswell graphics PRMs.\nAdd it to libgfxinit alongside some code to disable bending CLKOUT_DP.\n\nEven with the FDI mPHY initialization in place, the garbage would still\nbe present on the VGA monitor. Digital interfaces were not affected.\nBy carefully dumping and comparing the display registers of a good and\na bad case, it was determinted that the fault was due to a mismatched\nlink width for FDI. The FDI link between the iGPU and the Lynxpoint PCH\ncan operate in either x1 or x2 width, depending on the bandwidth needs\nof the monitor on the PCH\u0027s VGA port. To drive a 1920x1080 VGA monitor,\nit is necessary to use both FDI lanes. Moreover, both ends of the link\nneed to be configured to use the same link width. However, the wrong\nlink width was assumed when configuring the display pipe, because\n`DP.Lane_Count` was used unconditionally instead of `FDI.Lane_Count`.\n\nAfter fixing both issues, gfx_test is able to light up a 1920x1080 VGA\nmonitor on the Asrock B85M Pro4 successfully, even after a S3 resume.\n\nChange-Id: Ieabe3b7f947be2ef488ddb57bfeae85fa055d360\nSigned-off-by: Angel Pons \u003cth3fanbus@gmail.com\u003e\nReviewed-on: https://review.coreboot.org/c/libgfxinit/+/41343\nTested-by: Nico Huber \u003cnico.h@gmx.de\u003e\nReviewed-by: Nico Huber \u003cnico.h@gmx.de\u003e\n"
    }
  ]
}