diff options
| author | Nico Huber <nico.h@gmx.de> | 2020-03-22 20:12:13 +0100 |
|---|---|---|
| committer | Nico Huber <nico.h@gmx.de> | 2020-03-24 20:36:36 +0000 |
| commit | d07ac8ee13ce7f1af5a9d9a5d2e194ab27b8fb9a (patch) | |
| tree | 018e611167eebe530fe3e56656d8e9adea25c911 /src/mainboard/hp | |
| parent | e47132be6601bfd485076d6520e56a8b8ecb0737 (diff) | |
drivers/intel/gma: Ditch `link_frequency_270_mhz` setting
The `link_frequency_270_mhz` setting was originally used by the native
graphics init code for Sandy/Ivy Bridge, which is long gone.
The value of this information (which board had it set) is questionable.
The only board that had an LVDS panel and set it to 0 was the ThinkPad
L520, where native graphics init was never reported to work. Also, the
native graphics init only used it for calculations, but never confi-
gured the hardware to use a specific frequency. A look into the docu-
mentation also doesn't reveal any straps that could be used to confi-
gure it.
Change-Id: Ieceaa13e4529096a8ba9036479fd84969faebd14
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39763
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/hp')
| -rw-r--r-- | src/mainboard/hp/compaq_8200_elite_sff/devicetree.cb | 1 | ||||
| -rw-r--r-- | src/mainboard/hp/snb_ivb_laptops/devicetree.cb | 1 | ||||
| -rw-r--r-- | src/mainboard/hp/z220_sff_workstation/devicetree.cb | 1 |
3 files changed, 0 insertions, 3 deletions
diff --git a/src/mainboard/hp/compaq_8200_elite_sff/devicetree.cb b/src/mainboard/hp/compaq_8200_elite_sff/devicetree.cb index 0cc4f9db13..ce13e0ae37 100644 --- a/src/mainboard/hp/compaq_8200_elite_sff/devicetree.cb +++ b/src/mainboard/hp/compaq_8200_elite_sff/devicetree.cb @@ -14,7 +14,6 @@ ## chip northbridge/intel/sandybridge - register "gfx.link_frequency_270_mhz" = "0" register "gfx.use_spread_spectrum_clock" = "0" register "gpu_dp_b_hotplug" = "0" register "gpu_dp_c_hotplug" = "0" diff --git a/src/mainboard/hp/snb_ivb_laptops/devicetree.cb b/src/mainboard/hp/snb_ivb_laptops/devicetree.cb index d4827cffcc..52fd627c5a 100644 --- a/src/mainboard/hp/snb_ivb_laptops/devicetree.cb +++ b/src/mainboard/hp/snb_ivb_laptops/devicetree.cb @@ -15,7 +15,6 @@ chip northbridge/intel/sandybridge register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410 }" - register "gfx.link_frequency_270_mhz" = "1" register "gfx.ndid" = "3" register "gfx.use_spread_spectrum_clock" = "1" register "gpu_cpu_backlight" = "0x00000129" diff --git a/src/mainboard/hp/z220_sff_workstation/devicetree.cb b/src/mainboard/hp/z220_sff_workstation/devicetree.cb index 9f184e8c75..2be0ed7b87 100644 --- a/src/mainboard/hp/z220_sff_workstation/devicetree.cb +++ b/src/mainboard/hp/z220_sff_workstation/devicetree.cb @@ -14,7 +14,6 @@ ## chip northbridge/intel/sandybridge - register "gfx.link_frequency_270_mhz" = "0" register "gfx.use_spread_spectrum_clock" = "0" register "gpu_dp_b_hotplug" = "0" register "gpu_dp_c_hotplug" = "0" |