linux-kernel - Re: [PATCH 1/1] ARM: multi_v7_defconfig: Add MCP23S08 pinctrl support

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Message-ID: <ede482e3-58a1-4664-84b1-f80e59841e28@foss.st.com>
Date: Mon, 10 Jun 2024 14:52:07 +0200
From: Christophe ROULLIER <christophe.roullier@...s.st.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        "David S . Miller"
	<davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Rob Herring
	<robh+dt@...nel.org>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue
	<alexandre.torgue@...s.st.com>,
        Richard Cochran <richardcochran@...il.com>,
        Jose Abreu <joabreu@...opsys.com>, Liam Girdwood <lgirdwood@...il.com>,
        Mark
 Brown <broonie@...nel.org>, Marek Vasut <marex@...x.de>
CC: <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] ARM: multi_v7_defconfig: Add MCP23S08 pinctrl support


On 6/10/24 14:27, Krzysztof Kozlowski wrote:
> On 10/06/2024 10:14, Christophe ROULLIER wrote:
>>>> @@ -469,6 +469,7 @@ CONFIG_SPI_XILINX=y
>>>>    CONFIG_SPI_SPIDEV=y
>>>>    CONFIG_SPMI=y
>>>>    CONFIG_PINCTRL_AS3722=y
>>>> +CONFIG_PINCTRL_MCP23S08=y
>>> This is not an on-SoC pinctrl, so it should be module (=m).
>> The stmmac is in built-in, if IO-Expander (MCP23S08) is on module, we
>> have huge of message during kernel boot
>>
>> because stmmac driver is deferred several times. (need to wait that
>> module are ready)
> Which is normal and not a reason to change defconfig. It it was a
> problem, you should solve it not in defconfig but in kernel. That's just
> defconfig, an example, reference or debugging tool if you wish, so
> fixing issue here is not a fix at all.
Ok so it will not be possible to boot in NFS mode
>
> Best regards,
> Krzysztof
>