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

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Date: Tue, 13 Feb 2024 11:39:37 +0530
From: Vignesh Raghavendra <vigneshr@...com>
To: Josua Mayer <josua@...id-run.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>, 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



On 12/02/24 22:09, Josua Mayer wrote:
> 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#

This warning exists not because of gpio-mux but because of SoC level
(k3-am64-main.dtsi) dtsi issue. There is a separate series to fix the
same. So this should be okay to ignore for now.


>>
>>> - 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#

Yup, thanks!


you could post a cut down version of the dts with all the problematic
nodes removed until yaml updates are merged, so as to get the basic
support in.


>>
>>> - 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 :)
>>

That's nice!


-- 
Regards
Vignesh