[Bug 205201] New: Booting halts if Dawicontrol DC-2976 UW SCSI board installed, unless RAM size limited to 3500M

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=205201

            Bug ID: 205201
           Summary: Booting halts if Dawicontrol DC-2976 UW SCSI board
                    installed, unless RAM size limited to 3500M
           Product: Platform Specific/Hardware
           Version: 2.5
    Kernel Version: 5.3
          Hardware: PPC-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: PPC-64
          Assignee: platform_ppc-64 at kernel-bugs.osdl.org
          Reporter: rj.ronkko at gmail.com
        Regression: No

Hardware environment:
AmigaOne X5000/20 (2 GHz), 8 GB RAM
Dawicontrol DC-2976 UW SCSI controller board (PCI) 

Linux distro: Ubuntu 16,04.6, Debian 8, Fienix (Not relevant, problem appears
before loading starts).

Description: Booting halts immediately after loading the kernel, if 
Dawicontrol DC-2976 UW SCSI boad is installed in the machine. If the RAM size
is limited to 3500MB (with U-boot variable 'mem=3500M'), booting continues
normally.

Steps to reproduce: Turn on the machine.

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