en Copyright 2015 Java http://172.16.0.5:8080/history/linux-6.15/Documentation/ABI/testing/sysfs-bus-rpmsg#39e47767 rpmsg: Add driver_override device attribute for rpmsg_deviceThis patch adds "driver_override" device attribute for rpmsg_device whichwill allow users to explicitly specify the rpmsg_driver to be used viasysfs entry.The "driver_override" device attribute implemented here is very similarto "driver_override" implemented for platform, pci, and amba bus types.One important use-case of "driver_override" device attribute is to forceuse of rpmsg_chrdev driver for certain rpmsg_device instances.Signed-off-by: Anup Patel <anup@brainfault.org>Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> List of files: /linux-6.15/Documentation/ABI/testing/sysfs-bus-rpmsg Fri, 23 Mar 2018 16:11:17 +0000 Anup Patel <anup@brainfault.org> http://172.16.0.5:8080/history/linux-6.15/Documentation/ABI/testing/sysfs-bus-rpmsg#bcabbcca rpmsg: add virtio-based remote processor messaging busAdd a virtio-based inter-processor communication bus, which enableskernel drivers to communicate with entities, running on remoteprocessors, over shared memory using a simple messaging protocol.Every pair of AMP processors share two vrings, which are used to sendand receive the messages over shared memory.The header of every message sent on the rpmsg bus contains src and dstaddresses, which make it possible to multiplex several rpmsg channels onthe same vring.Every rpmsg channel is a device on this bus. When a channel is added,and an appropriate rpmsg driver is found and probed, it is also assigneda local rpmsg address, which is then bound to the driver's callback.When inbound messages carry the local address of a bound driver,its callback is invoked by the bus.This patch provides a kernel interface only; user space interfaceswill be later exposed by kernel users of this rpmsg bus.Designed with Brian Swetland <swetland@google.com>.Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>Acked-by: Rusty Russell <rusty@rustcorp.com.au> (virtio_ids.h)Cc: Brian Swetland <swetland@google.com>Cc: Arnd Bergmann <arnd@arndb.de>Cc: Grant Likely <grant.likely@secretlab.ca>Cc: Tony Lindgren <tony@atomide.com>Cc: Russell King <linux@arm.linux.org.uk>Cc: Andrew Morton <akpm@linux-foundation.org>Cc: Greg KH <greg@kroah.com>Cc: Stephen Boyd <sboyd@codeaurora.org> List of files: /linux-6.15/Documentation/ABI/testing/sysfs-bus-rpmsg Thu, 20 Oct 2011 19:10:55 +0000 Ohad Ben-Cohen <ohad@wizery.com>