linux-kernel - Re: [PATCH v5 0/5] arm64: dts: add description for solidrun am642 som and hummingboard evb

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Date: Mon, 12 Feb 2024 16:39:35 +0000
From: Josua Mayer <josua@...id-run.com>
To: Vignesh Raghavendra <vigneshr@...com>, Nishanth Menon <nm@...com>, Tero
 Kristo <kristo@...nel.org>, Rob Herring <robh+dt@...nel.org>, Krzysztof
 Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley
	<conor+dt@...nel.org>, Alessandro Zummo <a.zummo@...ertech.it>, Alexandre
 Belloni <alexandre.belloni@...tlin.com>
CC: Yazan Shhady <yazan.shhady@...id-run.com>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "devicetree@...r.kernel.org"
	<devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-rtc@...r.kernel.org"
	<linux-rtc@...r.kernel.org>, Krzysztof Kozlowski
	<krzysztof.kozlowski@...aro.org>, Suman Anna <s-anna@...com>, Grygorii
 Strashko <grygorii.strashko@...com>, MD Danish Anwar <danishanwar@...com>,
	Andrew Davis <afd@...com>
Subject: Re: [PATCH v5 0/5] arm64: dts: add description for solidrun am642 som
 and hummingboard evb

Hi Vignesh,

Am 12.02.24 um 05:10 schrieb Vignesh Raghavendra:
> Hi Josua,
>
> On 11/02/24 20:37, Josua Mayer wrote:
>> This series adds DT bindings and dts descriptions for SolidRun AM642
>> based SoM and Hummingboard EVB.
>>
>> Additionally a commit from downstream vendor kernel are included,
>> enhancing support for pru based ethernet.
>> I wasn't sure how to properly annotate it in commit description /
>> signed-off area ...:
>>
>> 1. add description for "Industrial Ethernet Peripherals" (IEP) to am64
>>    https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/commit/arch/arm64/boot/dts/ti/k3-am64-main.dtsi?h=ti-linux-6.1.y-cicd&id=5afb73d82a014b59462162d960b350b8c58e5ae6
>>    IEP is already supported in-tree by a driver, and used in
>>    k3-am65-main.dtsi.
>>
>> Unfortunately dtbs_check reported many problems, I put some remarks:
>>
>> - 'mux-controller' does not match any of the regexes
>>   The expectation seems to be that a mux-controller at minimum has an
>>   address, something to put behind an @. However this is a gpio mux, not
>>   sure how to name it better.
>>
> I don't see this warning locally. Are you using updated dt-schema?
pip3 install dtschema --upgrade
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: dtschema in ~/.local/lib/python3.11/site-packages (2023.11)

Re-Tested on 6.8-rc1

> reg
> is not necessary gpio-mux as per gpio-mux.yaml
The error is not about reg property, it is about the node name:

mux-controller {
    compatible = "gpio-mux";
    ...
};

  DTC_CHK arch/arm64/boot/dts/ti/k3-am642-hummingboard-t.dtb
.../arch/arm64/boot/dts/ti/k3-am642-hummingboard-t.dtb: syscon@...00000: 'mux-controller' does not match any of the regexes: '^chipid@[0-9a-f]+$', '^clock-controller@[0-9a-f]+$', '^mux-controller@[0-9a-f]+$', 'phy@[0-9a-f]+$', 'pinctrl-[0-9]+'
       from schema $id: http://devicetree.org/schemas/mfd/ti,j721e-system-controller.yaml#
>
>> - unevaluated properties: interrupts, interrupt-parent
>>   sensors and flash yaml are missing interrupt descriptions, but these
>>   parts definitely have an interrupt signal in this solidrun board.
>>
> Please add them to appropriate schema as necessary
Okay.
Looks like it is only two:
.../arch/arm64/boot/dts/ti/k3-am642-hummingboard-t.dtb: humidity-sensor@41: 'interrupt-parent', 'interrupts' do not match any of the regexes: 'pinctrl-[0-9]+'
       from schema $id: http://devicetree.org/schemas/iio/humidity/ti,hdc2010.yaml#
.../arch/arm64/boot/dts/ti/k3-am642-hummingboard-t.dtb: flash@0: Unevaluated properties are not allowed ('interrupt-parent', 'interrupts' were unexpected)
       from schema $id: http://devicetree.org/schemas/mtd/jedec,spi-nor.yaml#
>
>> - wrong names for pinctrl nodes
>>   Other TI DTSs consistently end with *-pins-default. Should a different
>>   naming convention be used?
>>
> No, pinctrl nodes need to end in -pins. All TI boards have been updated
> to new schema [0] and sysconfig tool on dev.ti.com/sysconfig generates
> appropriately. Please fix
Okay, will do ...
>
>
>> - cdns,phy-type required property
>>   inherited from k3-am64-main.dtsi
>>   there is a PHY_NONE value in dt-bindings/phy/phy.h,
>>   but not allowed in phy-cadence-torrent.yaml
>>
> Sorry, I didnt get what's the issue wrt cdns,phy-type ?
There were two issues, but they both disappeared as per 6.8-rc1 :)
>
>
> Note, I really don't want to accept patches that add new dtbs_check
> issues especially for nodes that already have YAML bindings. Please
> update the .yaml files as necessary.
I have succeeded locally getting rid of all but one, the node name of mux-controller mentioned above.
Will include yaml patches in next version.
>
> [0]
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a49568115143435390f20965902809471b6f830c
>
>