linux-kernel - Re: [PATCH v3 09/12] of: property: Simplify of_link_to

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Date:   Wed, 8 Feb 2023 15:37:12 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Saravana Kannan <saravanak@...gle.com>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Cristian Marussi <cristian.marussi@....com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Magnus Damm <magnus.damm@...il.com>,
        Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Len Brown <lenb@...nel.org>,
        Rafał Miłecki <rafal@...ecki.pl>,
        Abel Vesa <abel.vesa@...aro.org>,
        Alexander Stein <alexander.stein@...tq-group.com>,
        Tony Lindgren <tony@...mide.com>,
        John Stultz <jstultz@...gle.com>,
        Doug Anderson <dianders@...omium.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Maxim Kiselev <bigunclemax@...il.com>,
        Maxim Kochetkov <fido_max@...ox.ru>,
        Luca Weiss <luca.weiss@...rphone.com>,
        Colin Foster <colin.foster@...advantage.com>,
        Martin Kepplinger <martin.kepplinger@...i.sm>,
        Jean-Philippe Brucker <jpb@...nel.org>,
        Vladimir Oltean <vladimir.oltean@....com>,
        kernel-team@...roid.com, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org,
        linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH v3 09/12] of: property: Simplify of_link_to_phandle()

On Tue, Feb 07, 2023 at 11:31:57PM -0800, Saravana Kannan wrote:
> On Tue, Feb 7, 2023 at 6:08 PM Saravana Kannan <saravanak@...gle.com> wrote:

...

> Another way to get this to work is to:
> 1) unload pinctrl driver, unload spi driver.
> 2) apply overlay
> 3) reload pinctrl driver, reload spi driver.
> 
> This is assuming unloading those 2 drivers doesn't crash your system.

Just a side note.

For ACPI case the ACPICA prevents appearing of the same device in the
namespace, so the above is kinda enforced, that's why overlays work better
there (but have a lot of limitations).

-- 
With Best Regards,
Andy Shevchenko