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März 2026, 02:56:45 CET schrieb Peng Fan (OSS): >> >> From: Peng Fan >> >> >> >> Add reset reason string table for i.MX95 and introduce a helper >> >> (scmi_imx_misc_get_reason) to query and print both system and LM >> >> (Logical Machine) reset reasons via the SCMI MISC protocol. >> >> >> >> Signed-off-by: Peng Fan >> >> --- >> [...] >> >> + if (boot.valid) >> >> + dev_info(&sdev->dev, "%s Boot reason: %s, origin: %d, errid: %d\n", >> >> + system ? "SYS" : "LM", rst[boot.reason], >> >> + boot.orig_valid ? boot.origin : -1, >> >> + boot.err_valid ? boot.errid : -1); >> >> + if (shutdown.valid) >> >> + dev_info(&sdev->dev, "%s shutdown reason: %s, origin: %d, errid: %d\n", >> >> + system ? "SYS" : "LM", rst[shutdown.reason], >> >> + shutdown.orig_valid ? shutdown.origin : -1, >> >> + shutdown.err_valid ? shutdown.errid : -1); >> > >> >Is there a way to query this from userspace programs instead of printing into kernel log? >> >> I not add sysfs or debugfs to get the information in this patchset, since our >> customer only want the information could be shown in kernel boot log. >> >> But I could add also sysfs interface to allow userspace get the information if >> you need this feature. > >I started to working on corresponding framework: >https://lore.kernel.org/all/20250618120255.3141862-1-o.rempel@pengutronix.de/ Thanks for sharing the thread. > >but it is stalled due to devicetree decisions. I wont to respin the >discussion tomorrow TBH, I have not look into the details. If the generic framework could land into linux kernel, we could use this in i.MX SCMI reset reason. But I would not add dependency for now, so I will still just keep printing the log into kernel log. Thanks, Peng > >Best Regards, >Oleksij