In particular, support for display setup by lk. This introduces a simplefb display driver that uses the framebuffer fdt node populated by the firmware[1] for u-boot display support (and, at least for what I am working on, more interestingly, EFI GOP support).
In general, most snapdragon devices have a lk firmware which can light up the display. And mdp5 is a rather complex display controller block (not to mention different mdp4 block for older generations, and hdmi vs dsi blocks). So rather than duplicate all of that in u-boot, add a video driver similar to linux's simplefb, which simply takes over a display setup by an earlier boot stage. The simplefb video driver is so far only used on snapdragon, but the implementation is totally generic so probably useful on other devices in the future. A few related patches so that on db410c we actually use the fdt passed by lk (and so that dm/core is clever enough to notice fdt nodes under "chosen"), config updates, and related fixes. [1] https://github.com/robclark/lk/commits/db410c-display Rob Clark (5): board/db410c: use fdt passed from lk dm: core: also parse chosen node video: simplefb efi_loader: gop: fixes for CONFIG_DM_VIDEO without CONFIG_LCD configs: db410c: config updates arch/arm/Kconfig | 2 +- board/qualcomm/dragonboard410c/dragonboard410c.c | 16 ++++++ cmd/bootefi.c | 2 +- configs/dragonboard410c_defconfig | 7 +++ drivers/core/root.c | 22 +++++++- drivers/video/Kconfig | 10 ++++ drivers/video/Makefile | 2 +- drivers/video/simplefb.c | 68 ++++++++++++++++++++++++ lib/efi_loader/Makefile | 1 + lib/efi_loader/efi_gop.c | 7 ++- 10 files changed, 132 insertions(+), 5 deletions(-) create mode 100644 drivers/video/simplefb.c -- 2.9.4 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
