linux-kernel - Re: [PATCH] arm64: dts: imx8mn-var-som-symphony: fix USB OTG

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Date:   Wed, 5 Jul 2023 14:31:40 +0000
From:   Nate Drude <Nate.D@...iscite.com>
To:     Hugo Villeneuve <hugo@...ovil.com>,
        Fabio Estevam <festevam@...il.com>
CC:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Pierluigi Passaro <pierluigi.p@...iscite.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        Hugo Villeneuve <hvilleneuve@...onoff.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: imx8mn-var-som-symphony: fix USB OTG

Hi Hugo,

On 7/5/23 9:25 AM, Hugo Villeneuve wrote:
> [Some people who received this message don't often get email from hugo@...ovil.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
> 
> On Wed, 5 Jul 2023 10:49:01 -0300
> Fabio Estevam <festevam@...il.com> wrote:
> 
>> Hi Nate,
>>
>> On Wed, Jul 5, 2023 at 10:42 AM Nate Drude <Nate.D@...iscite.com> wrote:
>>
>>> The patch 'drivers: extcon: ptn5150: Add irq-is-id-quirk' referred to by Fabio is required for OTG to work correctly on all versions of the Symphony board.
>>>
>>> I can submit this patch mainline, do you think it will be accepted as is?
>>
>> I think it is worth submitting it to get some feedback from the
>> ptn5150 and DT maintainers.
>>
>> Thanks
> 
> Hi,
> if I understand correctly, the irq-is-id-quirk device tree property
> would be required for newer EVK boards, but not for older boards.
> 
> How can we support both configurations with the current device tree?
> 
> Hugo.
For some time, we maintained a legacy device tree file: https://github.com/varigit/linux-imx/blob/5.4-2.1.x-imx_var01/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony-legacy.dts

However, it is no longer being maintained in our newest kernel branches.

Regards,
Nate