linux-kernel - Re: [PATCH v2 2/2] pinctrl: add NXP S32 SoC family support

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Date:   Fri, 9 Dec 2022 12:38:51 +0800
From:   Chester Lin <clin@...e.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Fabio Estevam <festevam@...il.com>,
        Dong Aisheng <aisheng.dong@....com>,
        Shawn Guo <shawnguo@...nel.org>, Jacky Bai <ping.bai@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>, s32@....com,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Larisa Grigore <larisa.grigore@....com>,
        Ghennadi Procopciuc <Ghennadi.Procopciuc@....com>,
        Andrei Stefanescu <andrei.stefanescu@....com>,
        Radu Pirea <radu-nicolae.pirea@....com>,
        Andreas Färber <afaerber@...e.de>,
        Matthias Brugger <mbrugger@...e.com>,
        Matthew Nunez <matthew.nunez@....com>,
        Phu Luu An <phu.luuan@....com>,
        Stefan-Gabriel Mirea <stefan-gabriel.mirea@....com>
Subject: Re: [PATCH v2 2/2] pinctrl: add NXP S32 SoC family support

Hi Linus and Fabio,

Thanks for your time to review this patch!

On Thu, Dec 08, 2022 at 10:37:36PM +0100, Linus Walleij wrote:
> On Thu, Dec 8, 2022 at 12:04 AM Fabio Estevam <festevam@...il.com> wrote:
> 
> > In other imx8m pinctrl drivers we pass:
> (...)
> > > +module_platform_driver(s32g_pinctrl_driver);
> >
> > And we also register it in arch_initcall() level.
> 
> Do you really need that though? This driver certainly does not.
> 
> I was under the impression that recent changes to the probe-order
> logic has made most explicit arch_ etc initcall orderings surplus.
> 

Could bool/tristate options in the Kconfig be the key point?

Based on current design I prefer to build the s32g2 pinctrl driver as built-in
rather than a loadable module. IIUC, when the driver is not built as module
then the initcall ordering should still matter.

Feel free to correct me if anything wrong.

Regards,
Chester


> Yours,
> Linus Walleij