From a15347ef1e677ca711ce706877db2416ddfd451a Mon Sep 17 00:00:00 2001 From: Leah Rowe Date: Tue, 6 Aug 2024 01:43:57 +0100 Subject: coreboot/dell: merge into coreboot/default The libgfxinit patch and other patches e.g. DDR2 fix, are now provided in coreboot/default. The Latitude E6400 is now using the newer coreboot revision from late July 2024. Some other configs had to change because of this, relating to the new way that Nicholas handles timing on LVDS displays with the E6400 port; a default 96MHz clock is still used for pixel reference clock, overridden with a value of 100MHz on other GM45 machines, where 96MHz was previously hardcoded. Signed-off-by: Leah Rowe --- ...gma-plls.adb-Make-reference-clock-frequen.patch | 42 ++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 config/submodule/coreboot/default/libgfxinit/patches/0001-g45-hw-gfx-gma-plls.adb-Make-reference-clock-frequen.patch (limited to 'config/submodule/coreboot/default/libgfxinit') diff --git a/config/submodule/coreboot/default/libgfxinit/patches/0001-g45-hw-gfx-gma-plls.adb-Make-reference-clock-frequen.patch b/config/submodule/coreboot/default/libgfxinit/patches/0001-g45-hw-gfx-gma-plls.adb-Make-reference-clock-frequen.patch new file mode 100644 index 00000000..2d248941 --- /dev/null +++ b/config/submodule/coreboot/default/libgfxinit/patches/0001-g45-hw-gfx-gma-plls.adb-Make-reference-clock-frequen.patch @@ -0,0 +1,42 @@ +From ba078864500de99c26b6ea7e3fdcef19bca582a7 Mon Sep 17 00:00:00 2001 +From: Nicholas Chin +Date: Mon, 20 May 2024 10:10:03 -0600 +Subject: [PATCH 1/1] g45/hw-gfx-gma-plls.adb: Make reference clock frequency + configurable + +Instead of assuming a 96 MHz reference clock frequency, use the value +specified by the new INTEL_GMA_DPLL_REF_FREQ Kconfig. This defaults to +96 MHz to preserve the existing behavior. An example of where this is +needed is the DPLL_REF_SSCLK input, which will typically be 100 MHz +to support LVDS spread spectrum clocking. + +Signed-off-by: Nicholas Chin +--- + common/g45/hw-gfx-gma-plls.adb | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +diff --git a/common/g45/hw-gfx-gma-plls.adb b/common/g45/hw-gfx-gma-plls.adb +index 67242f2..5e970d7 100644 +--- a/common/g45/hw-gfx-gma-plls.adb ++++ b/common/g45/hw-gfx-gma-plls.adb +@@ -12,6 +12,8 @@ + -- GNU General Public License for more details. + -- + ++with CB.Config; ++ + with HW.Time; + with HW.GFX.GMA.Config; + with HW.GFX.GMA.Registers; +@@ -460,7 +462,7 @@ is + (Display => Port_Cfg.Display, + Target_Dotclock => Target_Clock, + -- should be, but doesn't has to be always the same: +- Reference_Clock => 96_000_000, ++ Reference_Clock => CB.Config.INTEL_GMA_DPLL_REF_FREQ, + Best_Clock => Clk, + Valid => Success); + else +-- +2.39.2 + -- cgit v1.2.1