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https://codeberg.org/libreboot/lbmk.git
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Leah Rowe
99a88ebfa2
Use patchset 15 instead of 14:
config/coreboot/default/patches/0061-WIP-OptiPlex-3050-Micro-port.patch
Rebase the verb patch; patchset 15 modified the Makefile:
config/coreboot/default/patches/0064-dell-optiplex_3050-add-hda_verb.c.patch
We were using patchset 14 for the 3050 micro:
https://review.coreboot.org/c/coreboot/+/82053/14
Now we use patchset 15:
https://review.coreboot.org/c/coreboot/+/82053/15
Without this patch, the fans are always on a low setting, on
the Dell OptiPlex 3050 Micro, even under stress conditions. With
this patch, the fans change speed according to CPU temperature.
I had to rebase my verb patch, because Mate modified the Makefile
to add his sch5555 handler, on the same line where I add hda_verb.
Mate tells me he will merge my verb and vbt patches into a further
patchset later on. For now, I've simply rebased these patches on
top of Mate's newer work; I've told him he can use them in his port.
I'm probably going to now issue a new revision ROM image for
Libreboot 20241008, so that users can get this fix sooner.
Signed-off-by: Leah Rowe <leah@libreboot.org>
53 lines
1.7 KiB
Diff
53 lines
1.7 KiB
Diff
From 265fb9f4fd017de635bc44b5a762c69a8bec6158 Mon Sep 17 00:00:00 2001
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From: Nicholas Chin <nic.c3.14@gmail.com>
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Date: Mon, 20 May 2024 10:24:16 -0600
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Subject: [PATCH 42/65] mb/dell/e6400: Use 100 MHz reference clock for display
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The E6400 uses a 100 MHz reference clock for spread spectrum support on
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LVDS, whereas libgfxinit previously assumed a 96 MHz input clock. For
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the more common 1280 x 800 display panels, the numerical error was not
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large enough to cause noticable issues, but the actual pixel clock
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frequency derived from a 100 MHz reference using PLL configs calculated
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assuming a 96 MHz reference was not close enough for 1440 x 900 panels,
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which require a much higher pixel clock. This resulted in a garbled
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display in the pre-OS graphics environment provided by libgfxinit.
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Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
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---
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src/mainboard/dell/e6400/Kconfig | 3 +++
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src/northbridge/intel/gm45/Kconfig | 4 ++++
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2 files changed, 7 insertions(+)
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diff --git a/src/mainboard/dell/e6400/Kconfig b/src/mainboard/dell/e6400/Kconfig
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index 417d95fd5d..6fe1b1c456 100644
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--- a/src/mainboard/dell/e6400/Kconfig
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+++ b/src/mainboard/dell/e6400/Kconfig
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@@ -19,6 +19,9 @@ config BOARD_SPECIFIC_OPTIONS
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select INTEL_GMA_HAVE_VBT
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select EC_DELL_MEC5035
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+config INTEL_GMA_DPLL_REF_FREQ
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+ default 100000000
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+
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config MAINBOARD_DIR
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default "dell/e6400"
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diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig
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index 8059e7ee80..5df5a93296 100644
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--- a/src/northbridge/intel/gm45/Kconfig
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+++ b/src/northbridge/intel/gm45/Kconfig
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@@ -14,6 +14,10 @@ config NORTHBRIDGE_INTEL_GM45
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if NORTHBRIDGE_INTEL_GM45
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+config INTEL_GMA_DPLL_REF_FREQ
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+ int
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+ default 96000000
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+
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config VBOOT
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select VBOOT_STARTS_IN_BOOTBLOCK
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--
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2.39.5
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