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From: Varadarajan Narayanan <varadarajan.narayanan@oss.qualcomm.com>
To: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>,
	casey.connolly@linaro.org, neil.armstrong@linaro.org,
	sumit.garg@kernel.org, jerome@forissier.org,
	marek.vasut+renesas@mailbox.org, ilias.apalodimas@linaro.org,
	me@samcday.com, aswin.murugan@oss.qualcomm.com,
	clamor95@gmail.com, michal.simek@amd.com, u-boot@lists.denx.de,
	u-boot-qcom@groups.io, Sumit Garg <sumit.garg@oss.qualcomm.com>
Subject: Re: [PATCH v6 2/5] drivers: sysreset: Add sysreset op that can take arguments
Date: Tue, 17 Feb 2026 09:56:52 +0530	[thread overview]
Message-ID: <aZPuDGK/uUOg11fR@hu-varada-blr.qualcomm.com> (raw)
In-Reply-To: <20260216152906.GU2747538@bill-the-cat>

On Mon, Feb 16, 2026 at 09:29:06AM -0600, Tom Rini wrote:
> On Mon, Feb 16, 2026 at 11:01:02AM +0530, Varadarajan Narayanan wrote:
> > On Fri, Feb 13, 2026 at 01:20:10PM -0700, Simon Glass wrote:
> > [ . . . ]
> >
> > > > > > > I haven't been following this, but what sort of args are you planning to pass?
> > > > > >
> > > > > > As of now, an argument to indicate reboot to emergency download mode.
> > > > >
> > > > > So how about adding a struct in sysreset.h where you can include a
> > > > > flag word and create a single flag for your case? We should be able to
> > > > > handle reset without the cmdline being enabled.
> > > > >
> > > > > There are other cases where this would be useful, e.g. an EFI app
> > > > > rebooting into setup boot.
> > > >
> > > > Previously, i.e. v5 [1] didn't have SYSRESET_CMD_RESET_ARGS config
> > > > option. This was added to avoid bloat code size for platforms that will
> > > > not need this. Please see [2]
> > >
> > > Sure, but you are adding a new method, so you could make it take a new
> > > struct instead of the string list, still behind your Kconfig option.
> >
> > Sure.
> >
> > You want 'request_arg' function pointer to take a structure instead of
> > 'char * const argv[]'. Is this understanding correct?
> >
> > If yes, this string list is what was given in the command line. And is
> > passed to the implementation specific handler.
> >
> > 	Command line -> do_reset -> sysreset_walk_arg -> *request_arg
> >
> > The implementation specific handler can interpret the argv[] as
> > applicable to itself. Not sure how to convert/parse this to a struct
> > that can be used by EFI app. Am I missing something. Please advice.
>
> Varada, do you think this suggestion is taking things in a useful
> direction? It's unclear to me at this point if what Simon suggested is
> going to provide something meaningfully more clear / useful or not.

At this point, for my case, it seems not needed. That is why trying to
understand his perspective to get better clarity and arrive at a
consensus.

Thanks
Varada

  reply	other threads:[~2026-02-17  4:27 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-21  6:39 [PATCH v6 0/5] Implement reset to EDL for qcs9100 Varadarajan Narayanan
2026-01-21  6:39 ` [PATCH v6 1/5] arm: psci: Add API to check for support of specific PSCI function Varadarajan Narayanan
2026-01-21  6:39 ` [PATCH v6 2/5] drivers: sysreset: Add sysreset op that can take arguments Varadarajan Narayanan
2026-01-21 14:57   ` Tom Rini
2026-01-26  5:15   ` Simon Glass
2026-01-27  4:18     ` Varadarajan Narayanan
2026-02-04  0:23       ` Simon Glass
2026-02-13  9:42         ` Varadarajan Narayanan
2026-02-13 20:20           ` Simon Glass
2026-02-16  5:31             ` Varadarajan Narayanan
2026-02-16 15:29               ` Tom Rini
2026-02-17  4:26                 ` Varadarajan Narayanan [this message]
2026-02-17 14:39                   ` Tom Rini
2026-02-16 17:19               ` Simon Glass
2026-02-17  4:24                 ` Varadarajan Narayanan
2026-02-17 13:31                   ` Simon Glass
2026-01-21  6:39 ` [PATCH v6 3/5] sysreset: Implement PSCI based reset to EDL mode for QCOM SoCs Varadarajan Narayanan
2026-05-26 13:32   ` Quentin Schulz
2026-06-08 14:53     ` Quentin Schulz
2026-06-23 16:50       ` Tom Rini
2026-07-02 17:43         ` Quentin Schulz
2026-07-02 17:46           ` Tom Rini
2026-07-03  5:21             ` Varadarajan Narayanan
2026-07-03  7:28               ` Varadarajan Narayanan
2026-01-21  6:39 ` [PATCH v6 4/5] cmd: boot: Add '-edl' option to reset command documentation Varadarajan Narayanan
2026-01-21  6:39 ` [PATCH v6 5/5] qcom_defconfig: enable psci based sysreset Varadarajan Narayanan
2026-04-29  8:49 ` [PATCH v6 0/5] Implement reset to EDL for qcs9100 Casey Connolly

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