Add support for the Renesas MFIS mailbox, which provides an interface
between the different CPU Cores, such as AP System Core domain and the
Realtime Core domain, SCP Core domain and AP System Core domain or
Realtime Core domain and AP System Core domain or Realtime Core domain.

Signed-off-by: Tuyen Dang <tuyen.dang.xa@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> # Update the driver
[Marek: Rename the driver to renesas-mfis, simplify the driver.
        Always use only one TX channel and no RX channel, drop all
	unnecessary code. Perform 1ms delay in send callback which
	is perfectly fine to do in U-Boot which does RX polling]

Some shared memory mailboxes may have empty receive operation,
because the data are polled by upper layers directly from the
shared memory region, and there is no completion interrupt or
bit of any sort. Allow empty .recv callback, and if the .recv
callback is empty, exit from mbox_recv() right away, because
any polling for completion here would be meaningless.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Alice Guo <alice.guo@nxp.com>

Operations are not changing that's why mark them as const which ensure that
structure will be moved from .data section to .rodata section.
Also mark them as static because they are not used out of this file.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/b7e5dc8841f6e904a7365f2ed45248609c007ddd.1753444878.git.michal.simek@amd.com

Use resource_size to correctly calculate the size to pass to
devm_ioremap and avoid the off by 1 errors previously present.

This issue was found by Smatch.

Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Link: https://lore.kernel.org/r/20250728-zynqmp-ipi-v1-1-b2bd144a9521@linaro.org
Signed-off-by: Michal Simek <michal.simek@amd.com>

This driver adds support for the single mailbox channel of the MSS
system controller on the Microchip PolarFire SoC.

Signed-off-by: Jamie Gibbons <jamie.gibbons@microchip.com>
Acked-by: Leo Yu-Chi Liang <ycliang@andestech.com>

It is confusing to have both "$(PHASE_)" and "$(XPL_)" be used in our
Makefiles as part of the macros to determine when to do something in our
Makefiles based on what phase of the build we are in. For consistency,
bring this down to a single macro and use "$(PHASE_)" only.

Signed-off-by: Tom Rini <trini@konsulko.com>

Caleb Connolly <caleb.connolly@linaro.org> says:

In Simon's series reworking autoprobe, a discussion came up about
DM_FLAG_PROBE_AFTER_BIND, specifically that it wasn't very clear where
this flag should be used.

This series implements my suggestions made there to clarify the use of
this flag, and fixup the two driver which erroneously apply it to their
driver struct (this does nothing).

Link: https://lore.kernel.org/u-boot/20241120153642.861633-1-sjg@chromium.org/
Link: https://lore.kernel.org/r/20250117-clarify-probe-after-bind-v1-0-273f046ce5dd@linaro.org

Some drivers set DM_FLAG_PROBE_AFTER_BIND, this does nothing since it's
only every applied on a per-device basis.

Remove the flags.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Michal Simek <michal.simek@amd.com>

This patch provides a driver for i.MX Messaging Unit (MU) using the
commom mailbox framework.

This is ported from Linux (v6.12.8) driver
drivers/mailbox/imx-mailbox.c. Its commit SHA is:
39d7d6177f0c ("mailbox: imx: use device name in interrupt name")

Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>

J722S R5 SPL uses sec-proxy threads 28 and 29 for communication with
TIFS. Mark these as valid threads in the driver.

https://software-dl.ti.com/tisci/esd/latest/5_soc_doc/j722s/sec_proxy.html

Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
Signed-off-by: Prasanth Babu Mantena <p-mantena@ti.com>
Reviewed-by: Udit Kumar <u-kumar1@ti.com>