[BUG] Hang shortly after loading FDT when booting on RK3399

[Alper Nebi Yasak]

On 17/11/2020 17:11, Peter Robinson wrote:
> On Tue, Nov 17, 2020 at 12:43 PM Alper Nebi Yasak
> <alpernebiyasak at gmail.com> wrote:
>>
>> On 17/11/2020 04:49, Jean Lucas wrote:
>>> Hello all,
>>>
>>> On Pine64 RockPro64 and Pinebook Pro (both RK3399), flashing U-Boot
>>> v2021.01-rc2-47-g9324c9a823 defconfig and mainline ATF
>>> v2.4-rc0-2-gd01f31c03 to SPI flash of both devices results in a hang
>>> shortly after loading the appropriate FDT when booting.
>>>
>>> On a Pinebook Pro:
>>>
>>> => load mmc 0:1 ${kernel_addr_r} Image
>>> 32418304 bytes read in 1448 ms (21.4 MiB/s)
>>> => load mmc 0:1 ${fdt_addr_r} dtbs/rockchip/rk3399-pinebook-pro.dtb
>>> 80831 bytes read in 27 ms (2.9 MiB/s)
>>> => load mmc 0:1 ${ramdisk_addr_r} initramfs-linux.img
>>> 29698825 bytes read in 1291 ms (21.9 MiB/s)
>>> => setenv bootargs console=ttyS2,1500000 console=tty0
>>> root=/dev/ghost/root audit=0
>>> => booti ${kernel_addr_r} ${ramdisk_addr_r}:${filesize} ${fdt_addr_r}
>>> Moving Image from 0x2080000 to 0x2200000, end=41c0000
>>> ## Flattened Device Tree blob at 01f00000
>>>     Booting using the
>>>
>>> Behavior is the same on RockPro64.
>>>
>>> Worth mentioning is that U-Boot from about a week ago (I think
>>> rc2-4-gf36603c7a8) with same mainline ATF version written to eMMC
>>> results in a working boot on Pinebook Pro, so bug seems to be when
>>> booting from SPI.
>>>
>>> To further the hypothesis, on RockPro64, the latest U-Boot I can use
>>> from SPI (defconfig) is release 2020.04, since later releases also hang
>>> on loading the appropriate FDT when booting as described above.
>>>
>>> Any ideas as to what could be causing the hangs?
>>>
>>
>> My gru-kevin was hanging at that same place when I tried to boot from
>> USB, try running "usb stop" to see if that hangs. If so, try disabling
>> CONFIG_USB_OHCI_HCD and CONFIG_USB_OHCI_GENERIC, which fixed the hang in
>> my case.
> 
> Which probably breaks USB keyboards?

I wouldn't know, gru-kevin uses cros-ec-keyb so I never needed to try a
USB keyboard. I meant those as steps to narrow things down.