u-boot.git/drivers/mailbox/Kconfig, branch next

mailbox: mpfs-mbox: support new syscon based devicetree configuration

2026-06-08T21:38:25Z

The original PolarFire SoC mailbox devicetree bindings described the control/status and interrupt registers as standalone reg regions of the mailbox device. This was incorrect, as these registers are shared system control blocks and should instead be modeled as syscon devices. Linux has since corrected this by introducing syscon-based bindings for the MPFS mailbox and updating the mailbox driver to access the control and interrupt registers via syscon/regmap. U-Boot, however, continued to expect the legacy binding, causing mailbox access to fail when using Linux-aligned devicetrees. Update the U-Boot MPFS mailbox driver to support the new syscon-based bindings by resolving the control and sysreg syscon nodes and accessing the registers through regmap. Support for the legacy mailbox binding is retained for backwards compatibility with existing firmware-provided devicetrees. This brings the U-Boot mailbox driver in line with the corrected hardware description and matches the behavior of the Linux mailbox driver. Signed-off-by: Jamie Gibbons Reviewed-by: Conor Dooley

dm: core: Default to using DEVRES outside of xPL

2026-01-09T15:08:14Z

The devm alloc functions that we have may follow the Linux kernel model where allocations are (almost always) automatically free()'d. However, quite often we don't enable, in full U-Boot, the tracking and free()'ing functionality. This in turn leads to memory leaks because the driver author expects that since the functions have the same name as in the Linux Kernel they have the same behavior. In turn we then get functionally correct commits such as commit 00e1fed93c8c ("firmware: ti_sci: Fix memory leaks in devm_ti_sci_get_of_resource") that manually add these calls. Rather than manually tracking allocations and implementing free()s, rework things so that we follow expectations by enabling the DEVRES functionality (outside of xPL phases). This turns DEVRES from a prompted symbol to a symbol that must be select'd, and we now remove our non-managed alloc/free functions from outside of xPL builds. Reviewed-by: Michael Trimarchi Signed-off-by: Tom Rini

mailbox: renesas: Add Renesas MFIS Multifunctional Interface mailbox driver

2025-12-02T23:17:15Z

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 Signed-off-by: Marek Vasut # 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]

mailbox: add PolarFire SoC mailbox driver

2025-08-14T07:33:00Z

This driver adds support for the single mailbox channel of the MSS system controller on the Microchip PolarFire SoC. Signed-off-by: Jamie Gibbons Acked-by: Leo Yu-Chi Liang

mailbox: add i.MX Messaging Unit (MU) driver

2025-03-13T18:15:50Z

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 Signed-off-by: Peng Fan Signed-off-by: Alice Guo Reviewed-by: Ye Li

arm64: versal2: Add support for AMD Versal Gen 2

2024-06-17T14:02:29Z

Add support for AMD Versal Gen 2. SoC is based on Cortex-a78ae 4 cluster/2 cpu core each. A lot of IPs are shared with previous families. There are couple of new IP blocks where the most interesting from user point of view is UFS. Signed-off-by: Michal Simek Link: https://lore.kernel.org/r/bc2b70831ce1031bd0fac32357bff84936e1310f.1716994063.git.michal.simek@amd.com

mailbox: zynqmp: Enable ipi mailbox driver for Versal NET

2022-09-26T12:23:29Z

Enable mailbox configs for Versal NET. Signed-off-by: Jay Buddhabhatti Signed-off-by: Michal Simek Link: https://lore.kernel.org/r/b3a9a6a58b74d17e2ec5f60617fa42062fbab951.1663589964.git.michal.simek@amd.com

arm64: versal: Enable power domain driver and its dependencies

2022-07-26T06:36:25Z

Enable power domain driver to configure pmufw config object and request node for all the IP's that are enabled in DT. This driver depends on mailbox and IPI driver, hence enable them as well. Add ARCH_VERSAL in the depends on of mailbox Kconfig to compile for Versal platforms. Signed-off-by: Ashok Reddy Soma Signed-off-by: Michal Simek Link: https://lore.kernel.org/r/20220722084658.30995-6-ashok.reddy.soma@xilinx.com

mailbox: apple: Add driver for Apple IOP mailbox

2022-02-10T21:44:23Z

This mailbox driver provides a communication channel with the Apple IOP controllers found on Apple SoCs. These IOP controllers are used to implement various functions such as the System Manegement Controller (SMC) and NVMe storage. It allows sending and receiving a 96-bit message over a single channel. The header file with the struct used for mailbox messages is taken straight from Linux. Signed-off-by: Mark Kettenis Signed-off-by: Sven Peter Reviewed-by: Simon Glass Tested on: Macbook Air M1 Tested-by: Simon Glass

rename symbol: CONFIG_TEGRA -> CONFIG_ARCH_TEGRA

2020-05-15T18:47:35Z

Have this symbol follow the pattern of all other such symbols. Signed-off-by: Trevor Woerner