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Diffstat (limited to 'src/mainboard/google/foster/devicetree.cb')
| -rw-r--r-- | src/mainboard/google/foster/devicetree.cb | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/mainboard/google/foster/devicetree.cb b/src/mainboard/google/foster/devicetree.cb new file mode 100644 index 0000000000..947a26987a --- /dev/null +++ b/src/mainboard/google/foster/devicetree.cb @@ -0,0 +1,95 @@ +## +## This file is part of the coreboot project. +## +## Copyright 2015 Google Inc. +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; version 2 of the License. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc. +## + +chip soc/nvidia/tegra210 + register "spintable_addr" = "0x80000008" + + device cpu_cluster 0 on + device cpu 0 on end + device cpu 1 on end + device cpu 2 on end + device cpu 3 on end + end + + register "display_controller" = "TEGRA_ARM_DISPLAYA" + register "xres" = "1366" + register "yres" = "768" + + # framebuffer resolution + register "display_xres" = "1368" + register "display_yres" = "678" + + # bits per pixel and color depth + register "framebuffer_bits_per_pixel" = "16" + register "color_depth" = "6" + + register "panel_bits_per_pixel" = "18" + +# How to compute these: xrandr --verbose will give you this: +#Detailed mode: Clock 285.250 MHz, 272 mm x 181 mm +# 2560 2608 2640 2720 hborder 0 +# 1700 1703 1713 1749 vborder 0 +#Then you can compute your values: +#H front porch = 2608 - 2560 = 48 +#H sync = 2640 - 2608 = 32 +#H back porch = 2720 - 2640 = 80 +#V front porch = 1703 - 1700 = 3 +#V sync = 1713 - 1703 = 10 +#V back porch = 1749 - 1713 = 36 +#href_to_sync and vref_to_sync are from the vendor +#this is just an example for a Pixel panel; other panels differ. +# Here is a peppy panel: +# 1366x768 (0x45) 76.4MHz -HSync -VSync *current +preferred +# h: width 1366 start 1502 end 1532 total 1592 +# v: height 768 start 776 end 788 total 800 + register "href_to_sync" = "1" + register "hfront_porch" = "136" + register "hsync_width" = "30" + register "hback_porch" = "60" + + register "vref_to_sync" = "1" + register "vfront_porch" = "8" + register "vsync_width" = "12" + register "vback_porch" = "12" + + register "pixel_clock" = "76400000" + + register "win_opt" = "SOR_ENABLE" + + # + # dp specific fields + # + register "dp.pwm" = "1" + + # various panel delay time + register "dp.vdd_to_hpd_delay_ms" = "200" + register "dp.hpd_unplug_min_us" = "2000" + register "dp.hpd_plug_min_us" = "250" + register "dp.hpd_irq_min_us" = "250" + + # link configurations + register "dp.lane_count" = "1" + register "dp.enhanced_framing" = "1" + register "dp.link_bw" = "10" + # "10" is defined as SOR_LINK_SPEED_G2_7 in sor.h + + register "dp.drive_current" = "0x40404040" + register "dp.preemphasis" = "0x0f0f0f0f" + register "dp.postcursor" = "0" +end |