I wish you a good day
I'm trying U-Boot on RPi and in short - I'm stuck that when I put any dtoverlay in config.txt, after turning on RPi it's just hangs on rainbow RPi splash screen
I have created rootfs using buildroot 2020.02.1 and U-Boot 2020.01
When I have just this in config.txt:
[pi0w]
kernel=uboot_rpi_0_w.bin
[all]
device_tree_address=0x03000000
hdmi_drive=1
hdmi_force_hotplug=1
dtparam=spi=on
dtparam=audio=on
dtparam=i2c_arm=on
dtparam=watchdog=on
and boot.scr I create using this:
setenv fdt_addr_r 0x03000000
setenv kernel_addr_r 0x01000000
fdt addr ${fdt_addr_r}
fdt get value bootargs /chosen bootargs
load mmc 0:1 ${kernel_addr_r} zImage
bootz ${kernel_addr_r} - ${fdt_addr_r}
so RPi boots fine. But once I add to config.txt for example "dtoverlay = miniuart-bt" then nothing - only rainbow. I need to add this 3 dtbo: "miniuart-bt, vc4-fkms-v3d, ads7846"
My original config.txt (without U-Boot):
boot_delay=1
kernel=zImage
hdmi_drive=1
hdmi_force_hotplug=1
avoid_warnings=1
disable_overscan=1
disable_splash=1
force_turbo=1
gpu_mem_256=128
gpu_mem_512=128
gpu_mem_1024=128
dtparam=spi=on
dtparam=audio=on
dtparam=i2c_arm=on
dtparam=watchdog=on
dtoverlay=miniuart-bt
dtoverlay=vc4-fkms-v3d
# Display configuration [WaveShare 4inch HDMI LCD]
dtoverlay=ads7846
dtparam=penirq=25
dtparam=xomhs=60
dtparam=xmin=300
dtparam=xmax=3750
dtparam=ymin=150
dtparam=ymax=3800
dtparam=rotate=0
dtparam=swapxy=0
hdmi_force_mode=1
hdmi_group=2
hdmi_mode=87
hdmi_cvt=480 800 60 6 0 0 0
Thank you in advance for your help
