From bc1533e08975b285e589447f329ef25bfe585ef9 Mon Sep 17 00:00:00 2001 From: Won Chung Date: Thu, 27 Jul 2023 20:10:25 +0000 Subject: [PATCH] mb/google: Add more comment on GFX devices for the future reference Add more details to instruct future boards/models implementers regarding how GFX devices should be added. If HDMI and DP connectors are enumerated by the kernel in /sys/class/drm/ then corresponding GFX device should be added to ACPI. It is possible that some connectors do not have dedicated ports, but still enumerated. The order of GFX devices is DDIA -> DDIB -> TCPX. BUG=b:277629750 TEST=emerge-brya coreboot Change-Id: I59e82ee954a7d502e419046c1c2d7a20ea8a9224 Signed-off-by: Won Chung Reviewed-on: https://review.coreboot.org/c/coreboot/+/76776 Reviewed-by: Kapil Porwal Tested-by: build bot (Jenkins) Reviewed-by: Jakub Czapiga --- src/mainboard/google/brya/variants/brya0/overridetree.cb | 3 ++- src/mainboard/google/brya/variants/redrix/overridetree.cb | 8 ++++---- .../google/brya/variants/redrix4es/overridetree.cb | 8 ++++---- src/mainboard/google/brya/variants/skolas/overridetree.cb | 3 ++- .../google/brya/variants/skolas4es/overridetree.cb | 3 ++- src/mainboard/google/rex/variants/rex0/overridetree.cb | 5 +++-- 6 files changed, 17 insertions(+), 13 deletions(-) diff --git a/src/mainboard/google/brya/variants/brya0/overridetree.cb b/src/mainboard/google/brya/variants/brya0/overridetree.cb index 31d78a4a18..50fadbcef2 100644 --- a/src/mainboard/google/brya/variants/brya0/overridetree.cb +++ b/src/mainboard/google/brya/variants/brya0/overridetree.cb @@ -122,6 +122,7 @@ chip soc/intel/alderlake # DDIA for eDP register "device[0].name" = ""LCD"" # DDIB for HDMI + # If HDMI is not enumerated in the kernel, then no GFX device should be added for DDIB register "device[1].name" = ""DD01"" # TCP0 (DP-1) for port C0 register "device[2].name" = ""DD02"" @@ -135,7 +136,7 @@ chip soc/intel/alderlake register "device[4].name" = ""DD04"" register "device[4].use_pld" = "true" register "device[4].pld" = "ACPI_PLD_TYPE_C(LEFT, LEFT, ACPI_PLD_GROUP(3, 1))" - # TCP3 (DP-4) unused + # TCP3 (DP-4) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP3 register "device[5].name" = ""DD05"" device generic 0 on end end diff --git a/src/mainboard/google/brya/variants/redrix/overridetree.cb b/src/mainboard/google/brya/variants/redrix/overridetree.cb index 26b15e2764..e825996b75 100644 --- a/src/mainboard/google/brya/variants/redrix/overridetree.cb +++ b/src/mainboard/google/brya/variants/redrix/overridetree.cb @@ -117,13 +117,13 @@ chip soc/intel/alderlake register "device[2].name" = ""DD02"" register "device[2].use_pld" = "true" register "device[2].pld" = "ACPI_PLD_TYPE_C(LEFT, LEFT, ACPI_PLD_GROUP(1, 1))" - # TCP1 (DP-2) unused + # TCP1 (DP-2) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP1 register "device[3].name" = ""DD03"" # TCP2 (DP-3) for port C2 register "device[4].name" = ""DD04"" register "device[4].use_pld" = "true" register "device[4].pld" = "ACPI_PLD_TYPE_C(RIGHT, LEFT, ACPI_PLD_GROUP(2, 1))" - # TCP3 (DP-4) unused + # TCP3 (DP-4) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP3 register "device[5].name" = ""DD05"" device generic 0 on probe EPS PRIVACY_SCREEN @@ -139,13 +139,13 @@ chip soc/intel/alderlake register "device[2].name" = ""DD02"" register "device[2].use_pld" = "true" register "device[2].pld" = "ACPI_PLD_TYPE_C(LEFT, LEFT, ACPI_PLD_GROUP(1, 1))" - # TCP1 (DP-2) unused + # TCP1 (DP-2) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP1 register "device[3].name" = ""DD03"" # TCP2 (DP-3) for port C2 register "device[4].name" = ""DD04"" register "device[4].use_pld" = "true" register "device[4].pld" = "ACPI_PLD_TYPE_C(RIGHT, LEFT, ACPI_PLD_GROUP(2, 1))" - # TCP3 (DP-4) unused + # TCP3 (DP-4) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP3 register "device[5].name" = ""DD05"" device generic 0 on probe EPS PRIVACY_SCREEN_ABSENT diff --git a/src/mainboard/google/brya/variants/redrix4es/overridetree.cb b/src/mainboard/google/brya/variants/redrix4es/overridetree.cb index 65090610db..a2cac5a323 100644 --- a/src/mainboard/google/brya/variants/redrix4es/overridetree.cb +++ b/src/mainboard/google/brya/variants/redrix4es/overridetree.cb @@ -98,13 +98,13 @@ chip soc/intel/alderlake register "device[2].name" = ""DD02"" register "device[2].use_pld" = "true" register "device[2].pld" = "ACPI_PLD_TYPE_C(LEFT, LEFT, ACPI_PLD_GROUP(1, 1))" - # TCP1 (DP-2) unused + # TCP1 (DP-2) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP1 register "device[3].name" = ""DD03"" # TCP2 (DP-3) for port C2 register "device[4].name" = ""DD04"" register "device[4].use_pld" = "true" register "device[4].pld" = "ACPI_PLD_TYPE_C(RIGHT, LEFT, ACPI_PLD_GROUP(2, 1))" - # TCP3 (DP-4) unused + # TCP3 (DP-4) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP3 register "device[5].name" = ""DD05"" device generic 0 on probe EPS PRIVACY_SCREEN @@ -120,13 +120,13 @@ chip soc/intel/alderlake register "device[2].name" = ""DD02"" register "device[2].use_pld" = "true" register "device[2].pld" = "ACPI_PLD_TYPE_C(LEFT, LEFT, ACPI_PLD_GROUP(1, 1))" - # TCP1 (DP-2) unused + # TCP1 (DP-2) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP1 register "device[3].name" = ""DD03"" # TCP2 (DP-3) for port C2 register "device[4].name" = ""DD04"" register "device[4].use_pld" = "true" register "device[4].pld" = "ACPI_PLD_TYPE_C(RIGHT, LEFT, ACPI_PLD_GROUP(2, 1))" - # TCP3 (DP-4) unused + # TCP3 (DP-4) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP3 register "device[5].name" = ""DD05"" device generic 0 on probe EPS PRIVACY_SCREEN_ABSENT diff --git a/src/mainboard/google/brya/variants/skolas/overridetree.cb b/src/mainboard/google/brya/variants/skolas/overridetree.cb index 1740432a02..8cc5157b9d 100644 --- a/src/mainboard/google/brya/variants/skolas/overridetree.cb +++ b/src/mainboard/google/brya/variants/skolas/overridetree.cb @@ -122,6 +122,7 @@ chip soc/intel/alderlake # DDIA for eDP register "device[0].name" = ""LCD"" # DDIB for HDMI + # If HDMI is not enumerated in the kernel, then no GFX device should be added for DDIB register "device[1].name" = ""DD01"" # TCP0 (DP-1) for port C0 register "device[2].name" = ""DD02"" @@ -135,7 +136,7 @@ chip soc/intel/alderlake register "device[4].name" = ""DD04"" register "device[4].use_pld" = "true" register "device[4].pld" = "ACPI_PLD_TYPE_C(LEFT, LEFT, ACPI_PLD_GROUP(3, 1))" - # TCP3 (DP-4) unused + # TCP3 (DP-4) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP3 register "device[5].name" = ""DD05"" device generic 0 on end end diff --git a/src/mainboard/google/brya/variants/skolas4es/overridetree.cb b/src/mainboard/google/brya/variants/skolas4es/overridetree.cb index 0c0aa82f43..407e0a1b17 100644 --- a/src/mainboard/google/brya/variants/skolas4es/overridetree.cb +++ b/src/mainboard/google/brya/variants/skolas4es/overridetree.cb @@ -118,6 +118,7 @@ chip soc/intel/alderlake # DDIA for eDP register "device[0].name" = ""LCD"" # DDIB for HDMI + # If HDMI is not enumerated in the kernel, then no GFX device should be added for DDIB register "device[1].name" = ""DD01"" # TCP0 (DP-1) for port C0 register "device[2].name" = ""DD02"" @@ -131,7 +132,7 @@ chip soc/intel/alderlake register "device[4].name" = ""DD04"" register "device[4].use_pld" = "true" register "device[4].pld" = "ACPI_PLD_TYPE_C(LEFT, LEFT, ACPI_PLD_GROUP(3, 1))" - # TCP3 (DP-4) unused + # TCP3 (DP-4) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP3 register "device[5].name" = ""DD05"" device generic 0 on end end diff --git a/src/mainboard/google/rex/variants/rex0/overridetree.cb b/src/mainboard/google/rex/variants/rex0/overridetree.cb index 793a46d7c5..0cbea7b052 100644 --- a/src/mainboard/google/rex/variants/rex0/overridetree.cb +++ b/src/mainboard/google/rex/variants/rex0/overridetree.cb @@ -154,18 +154,19 @@ chip soc/intel/meteorlake # DDIA for eDP register "device[0].name" = ""LCD"" # DDIB for HDMI + # If HDMI is not enumerated in the kernel, then no GFX device should be added for DDIB register "device[1].name" = ""DD01"" # TCP0 (DP-1) for port C0 register "device[2].name" = ""DD02"" register "device[2].use_pld" = "true" register "device[2].pld" = "ACPI_PLD_TYPE_C(LEFT, LEFT, ACPI_PLD_GROUP(1, 1))" - # TCP1 (DP-2) unused + # TCP1 (DP-2) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP1 register "device[3].name" = ""DD03"" # TCP2 (DP-3) for port C1 register "device[4].name" = ""DD04"" register "device[4].use_pld" = "true" register "device[4].pld" = "ACPI_PLD_TYPE_C(RIGHT, LEFT, ACPI_PLD_GROUP(2, 1))" - # TCP3 (DP-4) unused + # TCP3 (DP-4) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP3 register "device[5].name" = ""DD05"" device generic 0 on end end