Re: [PATCH v3 14/42] power: reset: Add a driver for the ep93xx reset
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- Subject: Re: [PATCH v3 14/42] power: reset: Add a driver for the ep93xx reset
- From: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx>
- Date: Mon, 13 Nov 2023 11:04:21 +0100
- Cc: Andy Shevchenko <andy@xxxxxxxxxx>, nikita.shubin@xxxxxxxxxxx, Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>, Lennert Buytenhek <kernel@xxxxxxxxxxxxxx>, Russell King <linux@xxxxxxxxxxxxxxx>, Lukasz Majewski <lukma@xxxxxxx>, Linus Walleij <linus.walleij@xxxxxxxxxx>, Bartosz Golaszewski <brgl@xxxxxxxx>, Rob Herring <robh+dt@xxxxxxxxxx>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>, Conor Dooley <conor+dt@xxxxxxxxxx>, Michael Turquette <mturquette@xxxxxxxxxxxx>, Stephen Boyd <sboyd@xxxxxxxxxx>, Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Alessandro Zummo <a.zummo@xxxxxxxxxxxx>, Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>, Wim Van Sebroeck <wim@xxxxxxxxxxxxxxxxxx>, Guenter Roeck <linux@xxxxxxxxxxxx>, Sebastian Reichel <sre@xxxxxxxxxx>, Thierry Reding <thierry.reding@xxxxxxxxx>, Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>, Mark Brown <broonie@xxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Eric Dumazet <edumazet@xxxxxxxxxx>, Jakub Kicinski <kuba@xxxxxxxxxx>, Paolo Abeni <pabeni@xxxxxxxxxx>, Vinod Koul <vkoul@xxxxxxxxxx>, Miquel Raynal <miquel.raynal@xxxxxxxxxxx>, Richard Weinberger <richard@xxxxxx>, Vignesh Raghavendra <vigneshr@xxxxxx>, Damien Le Moal <dlemoal@xxxxxxxxxx>, Sergey Shtylyov <s.shtylyov@xxxxxx>, Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Olof Johansson <olof@xxxxxxxxx>, soc@xxxxxxxxxx, Liam Girdwood <lgirdwood@xxxxxxxxx>, Jaroslav Kysela <perex@xxxxxxxx>, Takashi Iwai <tiwai@xxxxxxxx>, Michael Peters <mpeters@xxxxxxxxxxxxxx>, Kris Bahnsen <kris@xxxxxxxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-gpio@xxxxxxxxxxxxxxx, devicetree@xxxxxxxxxxxxxxx, linux-clk@xxxxxxxxxxxxxxx, linux-rtc@xxxxxxxxxxxxxxx, linux-watchdog@xxxxxxxxxxxxxxx, linux-pm@xxxxxxxxxxxxxxx, linux-pwm@xxxxxxxxxxxxxxx, linux-spi@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, dmaengine@xxxxxxxxxxxxxxx, linux-mtd@xxxxxxxxxxxxxxxxxxx, linux-ide@xxxxxxxxxxxxxxx, linux-input@xxxxxxxxxxxxxxx, alsa-devel@xxxxxxxxxxxxxxxx
- In-reply-to: <CAHp75VeYHscM-r94kTrpH44W=OGVq+qoNNQZoVrR5_n-_K_Xsw@mail.gmail.com>
- References: <20230605-ep93xx-v3-0-3d63a5f1103e@maquefel.me> <20230605-ep93xx-v3-14-3d63a5f1103e@maquefel.me> <ZLq0Z0QgBdCoDpV+@smile.fi.intel.com> <80ed91bb971516638fa1793d648939815eba7630.camel@gmail.com> <CAHp75VeYHscM-r94kTrpH44W=OGVq+qoNNQZoVrR5_n-_K_Xsw@mail.gmail.com>
- User-agent: Evolution 3.48.4
Hi Andy!
On Mon, 2023-11-13 at 11:59 +0200, Andy Shevchenko wrote:
> On Sat, Nov 11, 2023 at 8:18 PM Alexander Sverdlin
> <alexander.sverdlin@xxxxxxxxx> wrote:
> > On Fri, 2023-07-21 at 19:37 +0300, Andy Shevchenko wrote:
>
> ...
[1]
>
> > > > + mdelay(1000);
> > >
> > > Atomic?! Such a huge delay must be explained, esp. why it's atomic.
> >
> > atomic or not, SoC is supposed to reset itself here.
> > However there is an errata [1] and the SoC can lockup instead.
>
> Good, and what I'm saying is that this piece of code must have a
> comment explaining this.
And it has, but for some reason you've trimmed it in your reply...
--
Alexander Sverdlin.
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