linux-kernel - Re: [PATCH 7/9] ARM: dts: stm32: add Hardware debug port (HDP) on stm32mp25

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Message-ID: <b57e3c9e-244e-435b-8a7b-cf90f3a973b3@kernel.org>
Date: Wed, 26 Feb 2025 08:23:36 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Clement LE GOFFIC <clement.legoffic@...s.st.com>,
 Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Maxime Coquelin <mcoquelin.stm32@...il.com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Bartosz Golaszewski <brgl@...ev.pl>
Cc: linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
 devicetree@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 7/9] ARM: dts: stm32: add Hardware debug port (HDP) on
 stm32mp25

On 25/02/2025 17:09, Clement LE GOFFIC wrote:
> On 2/25/25 14:05, Krzysztof Kozlowski wrote:
>> On 25/02/2025 09:48, Clément Le Goffic wrote:
>>> Add the hdp devicetree node for stm32mp25 SoC family
>>>
>>> Signed-off-by: Clément Le Goffic <clement.legoffic@...s.st.com>
>>> ---
>>>   arch/arm64/boot/dts/st/stm32mp251.dtsi | 7 +++++++
>>>   1 file changed, 7 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
>>> index f3c6cdfd7008..43aaed4fcf10 100644
>>> --- a/arch/arm64/boot/dts/st/stm32mp251.dtsi
>>> +++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi
>>> @@ -918,6 +918,13 @@ package_otp@1e8 {
>>>   			};
>>>   		};
>>>   
>>> +		hdp: pinctrl@...90000 {
>>> +			compatible = "st,stm32mp-hdp";
>>
>> So here again - you have stm32mp251 SoC, but use entirely different
>> compatible.
> 
> Ok so I will use "st,stm32mp15-hdp"


This means this is stm32mp15 SoC. I do not see such SoC on list of your
SoCs in bindings. What's more, there are no bindings for other SoC
components for stm32mp15!

Something is here not matching - this change, this DTSI, top level
bindings or all of your SoC device/blocks bindings.



Best regards,
Krzysztof