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authorStefan Tauner <stefan.tauner@gmx.at>2018-07-30 17:56:28 +0200
committerPatrick Georgi <pgeorgi@google.com>2018-08-13 15:47:51 +0000
commit6f9c84dc88fc4fcc351ec91b2bb9ff5ae6e4f1a6 (patch)
treed14e41c234ac6140a9982d2322888d15f0883ab3
parente08ffa615e56307d3badf04059f01db038dfc6e2 (diff)
downloadcoreboot-6f9c84dc88fc4fcc351ec91b2bb9ff5ae6e4f1a6.tar.xz
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>
-rw-r--r--Documentation/gfx/libgfxinit.md7
1 files changed, 5 insertions, 2 deletions
diff --git a/Documentation/gfx/libgfxinit.md b/Documentation/gfx/libgfxinit.md
index 472e967972..2086a90529 100644
--- a/Documentation/gfx/libgfxinit.md
+++ b/Documentation/gfx/libgfxinit.md
@@ -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;