diff options
| -rw-r--r-- | src/mainboard/google/brya/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/mainboard/google/brya/gma-mainboard.ads | 13 | ||||
| -rw-r--r-- | src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb | 32 |
3 files changed, 45 insertions, 1 deletions
diff --git a/src/mainboard/google/brya/Makefile.inc b/src/mainboard/google/brya/Makefile.inc index c40f21c275c9..ab80e32d731b 100644 --- a/src/mainboard/google/brya/Makefile.inc +++ b/src/mainboard/google/brya/Makefile.inc @@ -4,6 +4,7 @@ verstage-$(CONFIG_CHROMEOS) += chromeos.c romstage-$(CONFIG_CHROMEOS) += chromeos.c romstage-y += romstage.c +romstage-$(CONFIG_MAINBOARD_USE_EARLY_LIBGFXINIT) += gma-mainboard.ads ramstage-$(CONFIG_CHROMEOS) += chromeos.c ramstage-y += mainboard.c diff --git a/src/mainboard/google/brya/gma-mainboard.ads b/src/mainboard/google/brya/gma-mainboard.ads new file mode 100644 index 000000000000..3b02f14d95a7 --- /dev/null +++ b/src/mainboard/google/brya/gma-mainboard.ads @@ -0,0 +1,13 @@ +-- SPDX-License-Identifier: GPL-2.0-or-later + +with HW.GFX.GMA; +with HW.GFX.GMA.Display_Probing; + +use HW.GFX.GMA; +use HW.GFX.GMA.Display_Probing; + +private package GMA.Mainboard is + ports : constant Port_List := + (eDP, + others => Disabled); +end GMA.Mainboard; diff --git a/src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb b/src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb index 70e77795455b..efc2fcbc988d 100644 --- a/src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb +++ b/src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb @@ -123,7 +123,37 @@ chip soc/intel/alderlake }" device domain 0 on - device ref igpu on end + # The timing values can be derived from datasheet of display panel + # You can use EDID string to identify the type of display on the board + # use below command to get display info from EDID + # strings /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/edid + + # refer to display PRM document (Volume 2b: Command Reference: Registers) + # for more info on display control registers + # https://01.org/linuxgraphics/documentation/hardware-specification-prms + #+-----------------------------+---------------------------------------+-----+ + #| Intel docs | devicetree.cb | eDP | + #+-----------------------------+---------------------------------------+-----+ + #| Power up delay | `gpu_panel_power_up_delay` | T3 | + #+-----------------------------+---------------------------------------+-----+ + #| Power on to backlight on | `gpu_panel_power_backlight_on_delay` | T7 | + #+-----------------------------+---------------------------------------+-----+ + #| Power Down delay | `gpu_panel_power_down_delay` | T10 | + #+-----------------------------+---------------------------------------+-----+ + #| Backlight off to power down | `gpu_panel_power_backlight_off_delay` | T9 | + #+-----------------------------+---------------------------------------+-----+ + #| Power Cycle Delay | `gpu_panel_power_cycle_delay` | T12 | + #+-----------------------------+---------------------------------------+-----+ + device ref igpu on + register "panel_cfg" = "{ + .up_delay_ms = 200, + .down_delay_ms = 50, + .cycle_delay_ms = 500, + .backlight_on_delay_ms = 1, + .backlight_off_delay_ms = 200, + .backlight_pwm_hz = 200, + }" + end device ref dtt on end device ref tbt_pcie_rp0 on end device ref tbt_pcie_rp1 on end |