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| author | Nicolas Reinecke <nr@das-labor.org> | 2014-10-17 13:01:02 +0200 |
|---|---|---|
| committer | Vladimir Serbinenko <phcoder@gmail.com> | 2014-10-17 17:25:11 +0200 |
| commit | de72d439bff80cb1ef298d3752ea528c94e760ca (patch) | |
| tree | 57ef2e79d37d65aa7e78722897675da1fa7f3a95 | |
| parent | df5a91dd0ec7ba0a253d6f05382ed11d121eb0b1 (diff) | |
| download | coreboot-staging-de72d439bff80cb1ef298d3752ea528c94e760ca.zip coreboot-staging-de72d439bff80cb1ef298d3752ea528c94e760ca.tar.gz | |
lenovo/t520: Use native LVDS gfx init
As introduced in:
1783a3c ivybridge: LVDS gfx init.
The panel on the T520 is a LP156WD1 40 pin LVDS (2 ch, 6-bit).
Tx parameters derived from datasheet table.
Change-Id: Ib733836e3233a7f14a79f36a27ed36b638e837f5
Signed-off-by: Nicolas Reinecke <nr@das-labor.org>
Reviewed-on: http://review.coreboot.org/7100
Tested-by: build bot (Jenkins)
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
| -rw-r--r-- | src/mainboard/lenovo/t520/Kconfig | 6 | ||||
| -rw-r--r-- | src/mainboard/lenovo/t520/devicetree.cb | 16 |
2 files changed, 17 insertions, 5 deletions
diff --git a/src/mainboard/lenovo/t520/Kconfig b/src/mainboard/lenovo/t520/Kconfig index 9e280d4..105d5da 100644 --- a/src/mainboard/lenovo/t520/Kconfig +++ b/src/mainboard/lenovo/t520/Kconfig @@ -15,6 +15,12 @@ config BOARD_SPECIFIC_OPTIONS # dummy select HAVE_ACPI_RESUME select HAVE_SMI_HANDLER select INTEL_INT15 + select EARLY_CBMEM_INIT + select VGA + select INTEL_EDID + select MAINBOARD_HAS_NATIVE_VGA_INIT + select MAINBOARD_HAS_NATIVE_VGA_INIT_TEXTMODECFG + select SANDYBRIDGE_LVDS # Workaround for EC/KBC IRQ1. select SERIRQ_CONTINUOUS_MODE diff --git a/src/mainboard/lenovo/t520/devicetree.cb b/src/mainboard/lenovo/t520/devicetree.cb index c911d99..c32e237 100644 --- a/src/mainboard/lenovo/t520/devicetree.cb +++ b/src/mainboard/lenovo/t520/devicetree.cb @@ -5,11 +5,17 @@ chip northbridge/intel/sandybridge # Enable Panel as LVDS and configure power delays register "gpu_panel_port_select" = "0" # LVDS - register "gpu_panel_power_cycle_delay" = "6" # T7: 500ms - register "gpu_panel_power_up_delay" = "100" # T1+T2: 10ms - register "gpu_panel_power_down_delay" = "100" # T5+T6: 10ms - register "gpu_panel_power_backlight_on_delay" = "2100" # T3: 210ms - register "gpu_panel_power_backlight_off_delay" = "2100" # T4: 210ms + register "gpu_panel_power_cycle_delay" = "5" + register "gpu_panel_power_up_delay" = "300" # T1+T2: 30ms + register "gpu_panel_power_down_delay" = "300" # T5+T6: 30ms + 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.lvds_dual_channel" = "1" + register "gfx.link_frequency_270_mhz" = "1" + register "gfx.lvds_num_lanes" = "4" + register "gpu_cpu_backlight" = "0x1155" + register "gpu_pch_backlight" = "0x06100610" device cpu_cluster 0 on chip cpu/intel/socket_rPGA988B |
