diff options
Diffstat (limited to 'config/coreboot/dell/patches/0010-mb-dell-e6400-Use-100-MHz-reference-clock-for-displa.patch')
| -rw-r--r-- | config/coreboot/dell/patches/0010-mb-dell-e6400-Use-100-MHz-reference-clock-for-displa.patch | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/config/coreboot/dell/patches/0010-mb-dell-e6400-Use-100-MHz-reference-clock-for-displa.patch b/config/coreboot/dell/patches/0010-mb-dell-e6400-Use-100-MHz-reference-clock-for-displa.patch deleted file mode 100644 index f64743a5..00000000 --- a/config/coreboot/dell/patches/0010-mb-dell-e6400-Use-100-MHz-reference-clock-for-displa.patch +++ /dev/null @@ -1,52 +0,0 @@ -From 6f4968919cf4e801caacf8392492457b79efa9c6 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] 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/e6400/Kconfig | 3 +++ - src/northbridge/intel/gm45/Kconfig | 4 ++++ - 2 files changed, 7 insertions(+) - -diff --git a/src/mainboard/dell/e6400/Kconfig b/src/mainboard/dell/e6400/Kconfig -index 034de4be2b..4cb16af697 100644 ---- a/src/mainboard/dell/e6400/Kconfig -+++ b/src/mainboard/dell/e6400/Kconfig -@@ -17,6 +17,9 @@ config BOARD_SPECIFIC_OPTIONS - select INTEL_GMA_HAVE_VBT - select EC_DELL_MEC5035 - -+config INTEL_GMA_DPLL_REF_FREQ -+ default 100000000 -+ - config MAINBOARD_DIR - default "dell/e6400" - -diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig -index 2a266b9771..2432c9d78e 100644 ---- a/src/northbridge/intel/gm45/Kconfig -+++ b/src/northbridge/intel/gm45/Kconfig -@@ -13,6 +13,10 @@ config NORTHBRIDGE_INTEL_GM45 - - if NORTHBRIDGE_INTEL_GM45 - -+config INTEL_GMA_DPLL_REF_FREQ -+ int -+ default 96000000 -+ - config VBOOT - select VBOOT_STARTS_IN_BOOTBLOCK - --- -2.45.1 - |