Re: [PATCH v8 2/2] docs: spi: add documentation for userspace device instantiation
Mark Brown <[email protected]>
| Newsgroups | gmane.linux.kernel.spi.devel,gmane.linux.documentation |
|---|---|
| Message-ID | <[email protected]> |
On Tue, Jul 28, 2026 at 07:10:56PM +0000, Vishwaroop A wrote: > Document the new_device and delete_device sysfs attributes on SPI > controllers: > +What: /sys/class/spi_master/spiB/new_device > +Date: April 2026 > +KernelVersion: 7.2 These need updating. > +On systems that need spidev access at boot, a systemd service or > +udev rule can write to ``new_device`` after the SPI controller is > +available. The fixes for safe ordering of init mean that the new sysfs files will appears slightly after the device is registering, we ought to do something about ensuring there's a notification for the hotplug of the properties.
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