From: Kyle Bonnici <kylebonnici@hotmail.com>
To: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Herve Codina <herve.codina@bootlin.com>,
"devicetree-compiler@vger.kernel.org"
<devicetree-compiler@vger.kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Subject: Re: Phandles
Date: Mon, 13 Apr 2026 09:50:04 +0000 [thread overview]
Message-ID: <DB5F7CA0-08E8-4CF5-9815-598002AF471F@hotmail.com> (raw)
In-Reply-To: <c0983f3d-5025-4933-ac22-bfbc1adc6c31@kernel.org>
> You cannot have random values. I quoted the DT spec.
Where in the DTS 0.4 spec are property names such as pwms, clocks
etc… mandated to be of format <phandle cell …>?
> Well, we don't use discord but IRC... but that github issue also uses
> "pwms = <1 &pwm0 1 20 PWM_POLARITY_NORMAL>;"
>
> So again - what is "1"?
>
> I am asking because if you use incorrect value as phandle value, then
> DTC warning is obviously expected and nothing to fix here.
The warning is only valid if ‘1’ is expected to be a phandle which is what I am
Arguing the spec does not mandate this.
> You asked why phandle has to be the first entry in phandle-value type? I
> responded that DT spec makes it.
Which section in DTS 0.4 spec?
> We discuss DTC here, yes? Whether it has or has not a bug? Please help
> me to understand the topic. Why would we care about Zephyr's
> implementation? It's Zephyr's problem and I am not a Zephyr developer. I
> am not saying that it is not important, just saying that I am not the
> audience to discuss it.
I am arguing that the DTC Spec 0.4 does NOT mandate any of these any of these
“cooling_device”, “dmas”, “hwlocks”, “io_channels”, “iommus”, “mboxes”,
“msi_parent”, “mux_controls”, “phys”, “power_domains”, “pwms”, “resets”,
“clocks”, “sound_dai” and “thermal_sensors”
must follow <phandle cell …>.
This is only mandated by the dt-schema as far as I understand, that is a used by
Linux, but not Zephyr and the DTC Making the assumption that this is true for
all systems
Regards
Kyle
next prev parent reply other threads:[~2026-04-13 9:50 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <BB363BC4-B813-4D03-8737-587DF7425908@hotmail.com>
[not found] ` <20260412145144.4737fde6@bootlin.com>
[not found] ` <D22046DB-95B3-431E-8E80-0BA806811D01@hotmail.com>
2026-04-12 15:40 ` Phandles Herve Codina
2026-04-12 16:37 ` Phandles Kyle Bonnici
2026-04-13 6:37 ` Phandles Krzysztof Kozlowski
2026-04-13 7:10 ` Phandles Kyle Bonnici
2026-04-13 7:55 ` Phandles Krzysztof Kozlowski
2026-04-13 8:40 ` Phandles Kyle Bonnici
2026-04-13 9:16 ` Phandles Krzysztof Kozlowski
2026-04-13 9:50 ` Kyle Bonnici [this message]
2026-04-13 9:57 ` Phandles Krzysztof Kozlowski
2026-04-13 20:25 ` Phandles Kyle Bonnici
2026-04-14 15:24 ` Phandles Rob Herring
2026-04-14 19:31 ` Phandles Kyle Bonnici
2026-04-13 6:33 ` Phandles Krzysztof Kozlowski
2026-04-13 10:30 ` Phandles Herve Codina
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