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Documentation/gfx: explain port mapping in libgfxinit's config 

Change-Id: Id24ded4ba641aade66468313e33ede1a82090f05
Signed-off-by: Stefan Tauner <stefan.tauner@gmx.at>
Reviewed-on: https://review.coreboot.org/27854
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
Stefan Tauner 2018-07-30 17:56:28 +02:00 committed by Patrick Georgi
parent e08ffa615e
commit 6f9c84dc88
1 changed files with 5 additions and 2 deletions
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7
Documentation/gfx/libgfxinit.md
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@ -76,8 +76,11 @@ know through which interface the EDID can be queried:
select GFX_GMA_ANALOG_I2C_HDMI_D
Beside Kconfig options, *libgfxinit* needs to know which ports are
implemented on a board and should be probed for displays. Each
board has to implement the package `GMA.Mainboard` with a list:
implemented on a board and should be probed for displays. The mapping
between the physical ports and these entries depends on the hardware
implementation and can be recovered by testing or studying the output
of `intelvbttool` or `intel_vbt_decode`.
Each board has to implement the package `GMA.Mainboard` with a list:
ports : HW.GFX.GMA.Display_Probing.Port_List;