Hi Rob, On 25.06.2017 01:05, Rob Clark wrote: > 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). [...] > 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. [...]
I finally had time to look at patches (this and the earlier series). Enabling the output is pretty cool - I thought of that myself some time ago. Question: Do you have non-standard partition layout? I have flashed most recent 96boards debian image, but my device doesn't have splash partition. (It initializes screen properly, just doesn't display anything) Question2: Are you sure you have included all the patches? I've applied this series (also included patches from 2017-06-20), but u-boot doesn't parse device tree properly and things like usb cease to work - both with your and official lk: <log> U-Boot 2017.07-rc3-00015-ga2592ee (Jul 06 2017 - 13:48:40 +0200) Qualcomm-DragonBoard 410C DRAM: 986 MiB MMC: sdhci@07824000: 0, sdhci@07864000: 1 Using default environment In: serial Out: serial Err: serial Failed to find PMIC pon node. Check device tree Net: Net Initialization Skipped No ethernet found. Hit any key to stop autoboot: 0 </log> On the other hand it works properly with your pre-built binary [1]. I assume the difference may be that you have added proper (instead of fake) device tree into mkbootimg - is that the case? Thanks, Mateusz > > [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 > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
