From d07ac8ee13ce7f1af5a9d9a5d2e194ab27b8fb9a Mon Sep 17 00:00:00 2001 From: Nico Huber Date: Sun, 22 Mar 2020 20:12:13 +0100 Subject: 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 Reviewed-on: https://review.coreboot.org/c/coreboot/+/39763 Reviewed-by: Angel Pons Reviewed-by: Alexander Couzens Tested-by: build bot (Jenkins) --- src/mainboard/lenovo/t530/variants/t530/devicetree.cb | 1 - src/mainboard/lenovo/t530/variants/w530/devicetree.cb | 1 - 2 files changed, 2 deletions(-) (limited to 'src/mainboard/lenovo/t530') diff --git a/src/mainboard/lenovo/t530/variants/t530/devicetree.cb b/src/mainboard/lenovo/t530/variants/t530/devicetree.cb index 09fb3cdb59..d10371fdba 100644 --- a/src/mainboard/lenovo/t530/variants/t530/devicetree.cb +++ b/src/mainboard/lenovo/t530/variants/t530/devicetree.cb @@ -14,7 +14,6 @@ chip northbridge/intel/sandybridge register "gpu_panel_power_backlight_on_delay" = "2000" # T3: 200ms register "gpu_panel_power_backlight_off_delay" = "2000" # T4: 200ms register "gfx.use_spread_spectrum_clock" = "1" - register "gfx.link_frequency_270_mhz" = "1" register "gpu_cpu_backlight" = "0x1155" register "gpu_pch_backlight" = "0x11551155" diff --git a/src/mainboard/lenovo/t530/variants/w530/devicetree.cb b/src/mainboard/lenovo/t530/variants/w530/devicetree.cb index 17b0b41a10..095111b3ce 100644 --- a/src/mainboard/lenovo/t530/variants/w530/devicetree.cb +++ b/src/mainboard/lenovo/t530/variants/w530/devicetree.cb @@ -14,7 +14,6 @@ chip northbridge/intel/sandybridge register "gpu_panel_power_backlight_on_delay" = "2000" # T3: 200ms register "gpu_panel_power_backlight_off_delay" = "2000" # T4: 200ms register "gfx.use_spread_spectrum_clock" = "1" - register "gfx.link_frequency_270_mhz" = "1" register "gpu_cpu_backlight" = "0x1155" register "gpu_pch_backlight" = "0x11551155" -- cgit v1.2.3