Excluded List for "#size-cells" warning

[Stanley J. Johnson]

Hello,

Please let me know if you have any information regarding this issue.

thanks

-Stan Johnson

On 10/30/25 4:14 PM, Stan Johnson wrote:
> Attached are the dtc output files for a PB Lombard and a PB 3400c. If 
> you need any other information, please let me know.
> 
> Thanks for looking into this.
> 
> -Stan Johnson
> 
> -----
> 
> On 10/29/25 11:00 AM, Stan Johnson wrote:
>> On 10/29/25 1:29 AM, Segher Boessenkool wrote:
>>> On Tue, Oct 28, 2025 at 08:17:27PM -0500, Rob Herring wrote:
>>>> On Tue, Oct 28, 2025 at 7:05 PM Stan Johnson <userm57 at yahoo.com> wrote:
>>>>>
>>>>> -------- Forwarded Message --------
>>>>> Subject: Excluded List for "#size-cells" warning
>>>>> Date: Tue, 28 Oct 2025 10:00:25 -0600
>>>>> From: Stan Johnson <userm57 at yahoo.com>
>>>>> To: debian-powerpc at lists.debian.org
>>>>> CC: Finn Thain <fthain at linux-m68k.org>, Christophe Leroy
>>>>> <christophe.leroy at csgroup.eu>
>>>>>
>>>>> Hello,
>>>>>
>>>>> On a PowerBook G3 Pismo running the latest Debian SID, dmesg 
>>>>> reports the
>>>>> warning shown below. I've also seen the warning on PowerBook 
>>>>> Lombard and
>>>>> Wallstreet systems. I haven't checked PowerBook 3400c or Kanga.
>>>>
>>>> Can you send me a dump of the device tree on these systems:
>>>>
>>>> dtc -O dts /proc/device-tree
>>
>> Please see the attached compressed files containing dtc output for a 
>> Wallstreet (dtc_wallstreet.txt) and a Pismo (dtc_pismo.txt).
>>
>>>>
>>>> We've been fixing up these cases such as in commit 7e67ef889c9a
>>>> ("powerpc/prom_init: Fixup missing #size-cells on PowerBook6,7")
>>>
>>> And of course it is perfectly fine for an actual Open Firmware to *not*
>>> repeat the defaults.  As the documentation (the main IEEE 1275 thing)
>>> says: "A missing “#size-cells” property signifies the default value of
>>> one."  There are many other places in OF geared towards this default
>>> btw, take for example the "reg" word, that silently assumes your node's
>>> #size-cells is 1, and does completely the wrong thing if not.
>>>
>>> Flattened device trees are a fine thing, but the gratuitous ways it
>>> differs from OF, are not.
>>>
>>>
>>> Segher