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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>
This commit is contained in:
Nico Huber 2020-03-22 20:12:13 +01:00
parent e47132be66
commit d07ac8ee13
26 changed files with 0 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/drivers/intel/gma/i915.h
View File

@ -88,7 +88,6 @@ u32 gtt_read(u32 reg);
struct i915_gpu_controller_info
{
int use_spread_spectrum_clock;
int link_frequency_270_mhz;
u32 backlight;
int ndid;
u32 did[5];

1
src/mainboard/apple/macbookair4_2/devicetree.cb
View File

@ -1,6 +1,5 @@
chip northbridge/intel/sandybridge
register "gfx.did" = "{ 0x80000410, 0x80000320, 0x80000410, 0x80000410, 0x00000005 }"
register "gfx.link_frequency_270_mhz" = "0"
register "gfx.ndid" = "2"
register "gfx.use_spread_spectrum_clock" = "1"
register "gpu_cpu_backlight" = "0x00001312"

1
src/mainboard/asrock/b75pro3-m/devicetree.cb
View File

@ -14,7 +14,6 @@
#
chip northbridge/intel/sandybridge
register "gfx.link_frequency_270_mhz" = "0"
register "gfx.use_spread_spectrum_clock" = "0"
register "gpu_cpu_backlight" = "0x00000000"
register "gpu_dp_b_hotplug" = "4"

1
src/mainboard/compulab/intense_pc/devicetree.cb
View File

@ -12,7 +12,6 @@
chip northbridge/intel/sandybridge # FIXME: check gfx.ndid and gfx.did
register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
register "gfx.link_frequency_270_mhz" = "1"
register "gfx.ndid" = "3"
register "gpu_dp_b_hotplug" = "4"
register "gpu_dp_c_hotplug" = "4"

1
src/mainboard/google/stout/devicetree.cb
View File

@ -16,7 +16,6 @@ chip northbridge/intel/sandybridge
# For native gfx
register "gfx.use_spread_spectrum_clock" = "0"
register "gfx.link_frequency_270_mhz" = "1"
register "gpu_cpu_backlight" = "0x1155"
register "gpu_pch_backlight" = "0x06100610"

1
src/mainboard/hp/compaq_8200_elite_sff/devicetree.cb
View File

@ -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"

1
src/mainboard/hp/snb_ivb_laptops/devicetree.cb
View File

@ -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"

1
src/mainboard/hp/z220_sff_workstation/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/l520/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/s230u/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/t410/devicetree.cb
View File

@ -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

1
src/mainboard/lenovo/t420/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/t420s/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/t430/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/t430s/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/t520/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/t530/variants/t530/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/t530/variants/w530/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/x131e/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/x1_carbon_gen1/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/x201/devicetree.cb
View File

@ -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

1
src/mainboard/lenovo/x220/devicetree.cb
View File

@ -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"

1
src/mainboard/lenovo/x230/devicetree.cb
View File

@ -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"

1
src/mainboard/msi/ms7707/devicetree.cb
View File

@ -1,5 +1,4 @@
chip northbridge/intel/sandybridge
register "gfx.link_frequency_270_mhz" = "0"
device cpu_cluster 0x0 on
chip cpu/intel/model_206ax
register "c1_acpower" = "1"

1
src/mainboard/packardbell/ms2290/devicetree.cb
View File

@ -32,7 +32,6 @@ chip northbridge/intel/ironlake
register "gpu_cpu_backlight" = "0x58d"
register "gpu_pch_backlight" = "0x061a061a"
register "gfx.use_spread_spectrum_clock" = "0"
register "gfx.link_frequency_270_mhz" = "1"
device cpu_cluster 0 on
chip cpu/intel/model_2065x

21
util/autoport/sandybridge.go
View File

@ -14,26 +14,6 @@ func (i sandybridgemc) Scan(ctx Context, addr PCIDevData) {
GMA_INT15_BOOT_DISPLAY_DEFAULT, 0);
`)
pchLVDS := inteltool.IGD[0xe1180]
dualChannel := pchLVDS&(3<<2) == (3 << 2)
pipe := (pchLVDS >> 30) & 1
link_m1 := inteltool.IGD[0x60040+0x1000*pipe]
link_n1 := inteltool.IGD[0x60044+0x1000*pipe]
link_factor := float32(link_m1) / float32(link_n1)
fp0 := inteltool.IGD[0xc6040+8*pipe]
dpll := inteltool.IGD[0xc6014+4*pipe]
pixel_m2 := fp0 & 0xff
pixel_m1 := (fp0>>8)&0xff + 2
pixel_p1 := uint32(1)
for i := dpll & 0x1ffff; i != 0 && i&1 == 0; i >>= 1 {
pixel_p1++
}
pixel_n := ((fp0 >> 16) & 0xff) + 2
pixel_frequency := float32(120000*(5*pixel_m1+pixel_m2)) / float32(pixel_n*pixel_p1*7.0)
if !dualChannel {
pixel_frequency /= 2
}
link_frequency := pixel_frequency / link_factor
DevTree = DevTreeNode{
Chip: "northbridge/intel/sandybridge",
MissingParent: "northbridge",
@ -51,7 +31,6 @@ func (i sandybridgemc) Scan(ctx Context, addr PCIDevData) {
"gpu_cpu_backlight": FormatHex32(inteltool.IGD[0x48254]),
"gpu_pch_backlight": FormatHex32((inteltool.IGD[0xc8254] >> 16) * 0x10001),
"gfx.use_spread_spectrum_clock": FormatBool((inteltool.IGD[0xc6200]>>12)&1 != 0),
"gfx.link_frequency_270_mhz": FormatBool(link_frequency > 200000),
},
Children: []DevTreeNode{
{