linux-kernel - Re: [PATCH v2 1/2] dt-bindings: remoteproc: Support multiple reserved memory regions

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Message-ID: <42335d10-50a4-439b-b112-ca27c48aca6d@kernel.org>
Date: Wed, 31 Jul 2024 18:49:35 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Shun-Yi Wang (王順億) <Shun-Yi.Wang@...iatek.com>,
 "robh@...nel.org" <robh@...nel.org>,
 "mathieu.poirier@...aro.org" <mathieu.poirier@...aro.org>,
 "andersson@...nel.org" <andersson@...nel.org>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
 "linux-remoteproc@...r.kernel.org" <linux-remoteproc@...r.kernel.org>,
 "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
 Jason-ch Chen (陳建豪)
 <Jason-ch.Chen@...iatek.com>, Yaya Chang (張雅清)
 <Yaya.Chang@...iatek.com>, "conor+dt@...nel.org" <conor+dt@...nel.org>,
 Project_Global_Chrome_Upstream_Group
 <Project_Global_Chrome_Upstream_Group@...iatek.com>,
 Teddy Chen (陳乾元) <Teddy.Chen@...iatek.com>,
 "linux-arm-kernel@...ts.infradead.org"
 <linux-arm-kernel@...ts.infradead.org>,
 "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
 "krzk+dt@...nel.org" <krzk+dt@...nel.org>,
 "angelogioacchino.delregno@...labora.com"
 <angelogioacchino.delregno@...labora.com>,
 TingHan Shen (沈廷翰) <TingHan.Shen@...iatek.com>
Subject: Re: [PATCH v2 1/2] dt-bindings: remoteproc: Support multiple reserved
 memory regions

On 31/07/2024 15:54, Krzysztof Kozlowski wrote:
> On 31/07/2024 15:41, Shun-Yi Wang (王順億) wrote:
>> Hi Krzysztof,
>>
>> Thanks for the reviews.
>>
>> On Wed, 2024-07-31 at 14:40 +0200, Krzysztof Kozlowski wrote:
>>>  	 
>>> External email : Please do not click links or open attachments until
>>> you have verified the sender or the content.
>>>  On 31/07/2024 14:17, Shun-yi Wang wrote:
>>>> From: "shun-yi.wang" <shun-yi.wang@...iatek.com>
>>>>
>>>> Remove the maximum number of 1 for memory regions.
>>>
>>> Why?
>>>
>>
>> For future applications, MTK SCP will reserve multiple regions for
>> specific hardware use.
> 
> That's not a reason to drop constrain on an entry.

Maybe I was not that clear, so to explain more - entries must be
constrained, so provide widest constraints in top-level properties place
and narrow the constrains per variant in allOf:if:then: like:

https://elixir.bootlin.com/linux/v6.8/source/Documentation/devicetree/bindings/ufs/qcom,ufs.yaml#L132

Best regards,
Krzysztof