linux-kernel - Re: [PATCH v2 0/6] CAN: Add support for CAN in AM65,J721e and AM64

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Date:   Thu, 5 Aug 2021 18:14:07 +0530
From:   Aswath Govindraju <a-govindraju@...com>
To:     Jan Kiszka <jan.kiszka@...mens.com>, Nishanth Menon <nm@...com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        Lokesh Vutla <lokeshvutla@...com>,
        Faiz Abbas <faiz_abbas@...com>
Subject: Re: [PATCH v2 0/6] CAN: Add support for CAN in AM65,J721e and AM64

Hi Jan,

On 05/08/21 6:10 pm, Jan Kiszka wrote:
> On 05.08.21 14:32, Aswath Govindraju wrote:
>> Hi,
>>
>> On 02/08/21 6:15 pm, Nishanth Menon wrote:
>>> On 15:40-20210726, Aswath Govindraju wrote:
>>>> The following series of patches add support for CAN in SoC's AM65, J721e
>>>> and AM64.
>>>>
>>>> This patch series is dependent on [1] and [2] and I have requested for an
>>>> immutable tag from the Marc Kleine-Budde(maintainer of net tree).
>>>>
>>>> [1] - https://lore.kernel.org/patchwork/patch/1423048/
>>>> [2] - https://www.spinics.net/lists/linux-can/msg08108.html
>>>>
>>>> changes since v1 -
>>>> - changed the message ram configuration to use the maximum value
>>>>   in each field, for better performance.
>>>>
>>>> Aswath Govindraju (3):
>>>>   arm64: dts: ti: am654-base-board: Disable mcan nodes
>>>>   arm64: dts: ti: k3-am64-main: Add support for MCAN
>>>>   arm64: dts: ti: k3-am642-evm/sk: Add support for main domain mcan
>>>>     nodes in EVM and disable them on SK
>>>>
>>>> Faiz Abbas (3):
>>>>   arm64: dts: ti: k3-am65-mcu: Add Support for MCAN
>>>>   arm64: dts: ti: k3-j721e: Add support for MCAN nodes
>>>>   arm64: dts: ti: k3-j721e-common-proc-board: Add support for mcu_mcan
>>>>     nodes
>>>
>>> I noticed in my checkup: https://pastebin.ubuntu.com/p/zSk39M943N/
>>> warnings with dtbs_check, I think the bindings need a little more help
>>> here (please also notice the iot platform warnings getting introduced).
>>>
>>
>> Jan,
>>
>> Can you please point me to the schematics for iot platform? Also, is CAN
>> subsystem brought out on the iot platform boards?
> 
> Schematics aren't publicly available. If you have specific questions, I
> may help, though.
> 
> CAN is not in use yet (not connected AFAIK).
> 

Thank you for clarifying this. I will disable the CAN DT nodes in
k3-am65-iot2050-common.dtsi in my respin.

Thanks,
Aswath

> Jan
> 
>>
>>> Since we are still working on the bindings[1], lets clean that up
>>> before we consider the dts addition. I suspect we need to cook this
>>> more towards the next cycle.
>>>
>>> [1] https://lore.kernel.org/patchwork/patch/1470806/
>>>
>>
>> Nishanth,
>>
>> Sorry for not taking of this earlier. I'll try to get everything ready
>> for next release.
>>
>> Thanks,
>> Aswath
>>
>