Revert "cb/default: use rev 62c8197dd25376cb7b18d272af167cb176d28bcf"

This reverts commit fedeb6ecd8b5f3ed79dad754e452aecf88cbdde2.

this, along with several other updates, have been reverted.
dell 3050 micro had boot issues, on the update. i therefore
revert the recent revision update, pending further investigation.

1 files changed, 51 insertions, 0 deletions

diff --git a/config/coreboot/default/patches/0018-mb-dell-e6400-Use-100-MHz-reference-clock-for-displa.patch b/config/coreboot/default/patches/0018-mb-dell-e6400-Use-100-MHz-reference-clock-for-displa.patch
new file mode 100644
index 00000000..fdb225e8
--- /dev/null
+++ b/config/coreboot/default/patches/0018-mb-dell-e6400-Use-100-MHz-reference-clock-for-displa.patch
@@ -0,0 +1,51 @@
+From 130a5ca25fbedb58e49b613e4a7cece715b545ae Mon Sep 17 00:00:00 2001
+From: Nicholas Chin <nic.c3.14@gmail.com>
+Date: Mon, 20 May 2024 10:24:16 -0600
+Subject: [PATCH 18/48] mb/dell/e6400: Use 100 MHz reference clock for display
+
+The E6400 uses a 100 MHz reference clock for spread spectrum support on
+LVDS, whereas libgfxinit previously assumed a 96 MHz input clock. For
+the more common 1280 x 800 display panels, the numerical error was not
+large enough to cause noticable issues, but the actual pixel clock
+frequency derived from a 100 MHz reference using PLL configs calculated
+assuming a 96 MHz reference was not close enough for 1440 x 900 panels,
+which require a much higher pixel clock. This resulted in a garbled
+display in the pre-OS graphics environment provided by libgfxinit.
+
+Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
+---
+ src/mainboard/dell/gm45_latitude/Kconfig | 2 ++
+ src/northbridge/intel/gm45/Kconfig       | 4 ++++
+ 2 files changed, 6 insertions(+)
+
+diff --git a/src/mainboard/dell/gm45_latitude/Kconfig b/src/mainboard/dell/gm45_latitude/Kconfig
+index edc79b0d43..5020744990 100644
+--- a/src/mainboard/dell/gm45_latitude/Kconfig
++++ b/src/mainboard/dell/gm45_latitude/Kconfig
+@@ -22,6 +22,8 @@ config BOARD_DELL_E6400
+ 	select BOARD_DELL_GM45_LATITUDE_COMMON
+ 
+ if BOARD_DELL_GM45_LATITUDE_COMMON
++config INTEL_GMA_DPLL_REF_FREQ
++	default 100000000
+ 
+ config MAINBOARD_DIR
+ 	default "dell/gm45_latitude"
+diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig
+index a776217475..35e89b0c88 100644
+--- a/src/northbridge/intel/gm45/Kconfig
++++ b/src/northbridge/intel/gm45/Kconfig
+@@ -14,6 +14,10 @@ config NORTHBRIDGE_INTEL_GM45
+ 
+ if NORTHBRIDGE_INTEL_GM45
+ 
++config INTEL_GMA_DPLL_REF_FREQ
++	int
++	default 96000000
++
+ config VBOOT
+ 	select VBOOT_STARTS_IN_BOOTBLOCK
+ 
+-- 
+2.47.3
+