Update research/uboot status to latest

U-BOOT.md

@@ -88,15 +88,28 @@ Then: reboot → depthcharge dev menu → "Internal storage".
 - pmOS still boots from the USB stick (sda) via the depthcharge menu.
 - pmOS chroot lives on `mmcblk0p3`.
 
-## U-Boot tree state (branch `krane`, on top of mainline 527115ef)
+## U-Boot tree state (branch `krane-updates`, on top of mainline 527115ef)
 
 Kept features (upstreamable):
 
 - `drivers/video/mt8183_scanout.c` — UCLASS_VIDEO scanout driver on
   the upstream `ovl0@14008000` node: revives the depthcharge scanout
-  (OVL_EN/OVL0_2L_EN + backlight GPIOs), parses the coreboot table
+  (OVL_EN/OVL0_2L_EN + backlight GPIOs 43/176), parses the coreboot
-  LBIO at `0xffed9000`, falls back to `OVL_L0_ADDR` (0x14008f40),
+  table LBIO at `0xffed9000`, falls back to `OVL_L0_ADDR` (0x14008f40),
-  sets `uc_priv->rot = 3` (270° CW landscape console).
+  sets `uc_priv->rot = 3` (270° CW landscape console). The shared
+  handoff code lives in `mt8183_disp.c` / `mt8183_disp.h`.
+- `drivers/video/mt8183_display.c` — full cold bring-up driver
+  (Kconfig choice `VIDEO_MT8183_DISPLAY`, now the defconfig default;
+  `VIDEO_MT8183_SCANOUT` keeps the old behavior): MMSYS display gates,
+  SMI LARB0, panel init via `drivers/video/mtk_dsi.c` +
+  `drivers/phy/phy-mtk-mipi-tx.c` + `drivers/video/panel_boe_tv101wum.c`,
+  overlay scanout of a framebuffer at 0xFC000000 (FDT memreserve +
+  LMB), backlight. Falls back to the handoff revival, logging the
+  stage. Serial prints: `[dsi] phase 0/9/F`.
+- `drivers/gpio/mt8183_gpio.c` — minimal MT8183 GPIO driver (dir/dout/
+  din; pinmux left to firmware) for the panel reset / supply-enable pads.
+- `drivers/clk/mediatek/clk-mt8183.c` — now also models the MMSYS
+  display gates (CLK_MM_*) as a clock provider on `mmsys@14000000`.
 - `board/mediatek/mt8183/mt8183.c` — `get_page_table_size()` override
   (0x40000): the fb and coreboot-table dynamic mappings exhaust the
   default page-table budget (Round 31). Any new post-reloc