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>

15 files changed, 0 insertions, 15 deletions

diff --git a/src/mainboard/lenovo/l520/devicetree.cb b/src/mainboard/lenovo/l520/devicetree.cb
index 29b75984fb..897b52a558 100644
--- a/src/mainboard/lenovo/l520/devicetree.cb
+++ b/src/mainboard/lenovo/l520/devicetree.cb
@@ -1,6 +1,5 @@
 chip northbridge/intel/sandybridge
 	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
-	register "gfx.link_frequency_270_mhz" = "0"
 	register "gfx.ndid" = "3"
 	register "gfx.use_spread_spectrum_clock" = "0"
 	register "gpu_cpu_backlight" = "0x00000000"
diff --git a/src/mainboard/lenovo/s230u/devicetree.cb b/src/mainboard/lenovo/s230u/devicetree.cb
index b03e2f9459..8483a54c7d 100644
--- a/src/mainboard/lenovo/s230u/devicetree.cb
+++ b/src/mainboard/lenovo/s230u/devicetree.cb
@@ -1,6 +1,5 @@
 chip northbridge/intel/sandybridge
 	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
-	register "gfx.link_frequency_270_mhz" = "1"
 	register "gfx.ndid" = "3"
 	register "gfx.use_spread_spectrum_clock" = "1"
 	register "gpu_cpu_backlight" = "0x00000060"
diff --git a/src/mainboard/lenovo/t410/devicetree.cb b/src/mainboard/lenovo/t410/devicetree.cb
index c48285e44c..064bc741d2 100644
--- a/src/mainboard/lenovo/t410/devicetree.cb
+++ b/src/mainboard/lenovo/t410/devicetree.cb
@@ -31,7 +31,6 @@ chip northbridge/intel/ironlake
 	register "gpu_cpu_backlight" = "0x58d"
 	register "gpu_pch_backlight" = "0x061a061a"
 	register "gfx.use_spread_spectrum_clock" = "1"
-	register "gfx.link_frequency_270_mhz" = "1"
 
 	device cpu_cluster 0 on
 		chip cpu/intel/model_2065x
diff --git a/src/mainboard/lenovo/t420/devicetree.cb b/src/mainboard/lenovo/t420/devicetree.cb
index 53bd16f68a..eaae94c35f 100644
--- a/src/mainboard/lenovo/t420/devicetree.cb
+++ b/src/mainboard/lenovo/t420/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" = "0x06100610"
 
diff --git a/src/mainboard/lenovo/t420s/devicetree.cb b/src/mainboard/lenovo/t420s/devicetree.cb
index c91b04e919..5cf3165e33 100644
--- a/src/mainboard/lenovo/t420s/devicetree.cb
+++ b/src/mainboard/lenovo/t420s/devicetree.cb
@@ -13,7 +13,6 @@ 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" = "0x06100610"
 
diff --git a/src/mainboard/lenovo/t430/devicetree.cb b/src/mainboard/lenovo/t430/devicetree.cb
index cfdc3a4189..1cb38599b1 100644
--- a/src/mainboard/lenovo/t430/devicetree.cb
+++ b/src/mainboard/lenovo/t430/devicetree.cb
@@ -13,7 +13,6 @@ chip northbridge/intel/sandybridge
 	register "gpu_panel_power_backlight_on_delay" = "2100"	# T3: 210ms
 	register "gpu_panel_power_backlight_off_delay" = "2100"	# T4: 210ms
 	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/t430s/devicetree.cb b/src/mainboard/lenovo/t430s/devicetree.cb
index ee612cd95c..586e7d9a75 100644
--- a/src/mainboard/lenovo/t430s/devicetree.cb
+++ b/src/mainboard/lenovo/t430s/devicetree.cb
@@ -13,7 +13,6 @@ chip northbridge/intel/sandybridge
 	register "gpu_panel_power_backlight_on_delay" = "2100"	# T3: 210ms
 	register "gpu_panel_power_backlight_off_delay" = "2100"	# T4: 210ms
 	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/t520/devicetree.cb b/src/mainboard/lenovo/t520/devicetree.cb
index e28f6cc552..296a30491f 100644
--- a/src/mainboard/lenovo/t520/devicetree.cb
+++ b/src/mainboard/lenovo/t520/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" = "0x06100610"
 
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"
 
diff --git a/src/mainboard/lenovo/x131e/devicetree.cb b/src/mainboard/lenovo/x131e/devicetree.cb
index 2d15d87176..5f19740db3 100644
--- a/src/mainboard/lenovo/x131e/devicetree.cb
+++ b/src/mainboard/lenovo/x131e/devicetree.cb
@@ -13,7 +13,6 @@ chip northbridge/intel/sandybridge
 	register "gpu_panel_power_backlight_on_delay" = "3000"
 	register "gpu_panel_power_backlight_off_delay" = "2000"
 	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/x1_carbon_gen1/devicetree.cb b/src/mainboard/lenovo/x1_carbon_gen1/devicetree.cb
index ded920cb07..c9a83f5e0b 100644
--- a/src/mainboard/lenovo/x1_carbon_gen1/devicetree.cb
+++ b/src/mainboard/lenovo/x1_carbon_gen1/devicetree.cb
@@ -1,6 +1,5 @@
 chip northbridge/intel/sandybridge
 	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
-	register "gfx.link_frequency_270_mhz" = "1"
 	register "gfx.ndid" = "3"
 	register "gfx.use_spread_spectrum_clock" = "1"
 	register "gpu_cpu_backlight" = "0x00001155"
diff --git a/src/mainboard/lenovo/x201/devicetree.cb b/src/mainboard/lenovo/x201/devicetree.cb
index 8b6f1486cd..5bfbebd4be 100644
--- a/src/mainboard/lenovo/x201/devicetree.cb
+++ b/src/mainboard/lenovo/x201/devicetree.cb
@@ -32,7 +32,6 @@ chip northbridge/intel/ironlake
 	register "gpu_cpu_backlight" = "0x58d"
 	register "gpu_pch_backlight" = "0x061a061a"
 	register "gfx.use_spread_spectrum_clock" = "1"
-	register "gfx.link_frequency_270_mhz" = "1"
 
 	device cpu_cluster 0 on
 		chip cpu/intel/model_2065x
diff --git a/src/mainboard/lenovo/x220/devicetree.cb b/src/mainboard/lenovo/x220/devicetree.cb
index 5ae14278b4..8749b5cfd5 100644
--- a/src/mainboard/lenovo/x220/devicetree.cb
+++ b/src/mainboard/lenovo/x220/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" = "0x06100610"
 
diff --git a/src/mainboard/lenovo/x230/devicetree.cb b/src/mainboard/lenovo/x230/devicetree.cb
index e492dda710..52c5d329dc 100644
--- a/src/mainboard/lenovo/x230/devicetree.cb
+++ b/src/mainboard/lenovo/x230/devicetree.cb
@@ -14,7 +14,6 @@ chip northbridge/intel/sandybridge
 	register "gpu_panel_power_backlight_on_delay" = "2100"	# T3: 210ms
 	register "gpu_panel_power_backlight_off_delay" = "2100"	# T4: 210ms
 	register "gfx.use_spread_spectrum_clock" = "1"
-	register "gfx.link_frequency_270_mhz" = "1"
 	register "gpu_cpu_backlight" = "0x1155"
 	register "gpu_pch_backlight" = "0x11551155"