u-boot.git/drivers/mailbox, branch master

Merge tag 'v2026.07-rc5' into next

2026-06-22T22:42:41Z

Prepare v2026.07-rc5

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

mailbox: mpfs-mbox: fix driver bug and cleanup

2026-06-08T21:38:25Z

Remove an unused and invalid struct mbox_chan pointer from the private data and fix incorrect memory handling in the probe path, where the private data structure was allocated. This change corrects a functional bugs and cleans up the driver without altering its behavior. Fixes: 111e9bf6a5ac ("mailbox: add PolarFire SoC mailbox driver") Signed-off-by: Jamie Gibbons Reviewed-by: Conor Dooley

mailbox: mpfs-mbox: fix Driver Model private data handling

2026-06-08T21:38:25Z

The MPFS mailbox driver declares priv_auto but also allocates a second private data structure in the legacy probe path and overwrites the device’s private pointer using dev_set_priv(). This results in leaking the auto-allocated private data and replacing the driver’s private state mid-probe, which is incorrect usage of the U-Boot Driver Model and can lead to undefined behavior. Remove the redundant allocation and dev_set_priv() call so that the driver consistently uses the auto-allocated private data provided by U-Boot. Fixes: 111e9bf6a5ac ("mailbox: add PolarFire SoC mailbox driver") Signed-off-by: Jamie Gibbons Reviewed-by: Conor Dooley

mailbox: mpfs-mbox: fix MMIO mapping calculation

2026-06-08T21:38:25Z

Correct the MMIO mapping size calculation, which previously relied on an invalid start/end subtraction. This change corrects a functional bug and cleans up the driver without altering its behavior. Fixes: 111e9bf6a5ac ("mailbox: add PolarFire SoC mailbox driver") Signed-off-by: Jamie Gibbons Reviewed-by: Conor Dooley

mailbox: stm32-ipcc: Staticize and constify driver ops

2026-05-18T22:56:07Z

Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut Reviewed-by: Patrice Chotard

mailbox: sandbox: Staticize and constify driver ops

2026-05-18T22:56:07Z

Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut

mailbox: renesas: Staticize and constify driver ops

2026-05-18T22:56:07Z

Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut

mailbox: k3-sec-proxy: Staticize and constify driver ops

2026-05-18T22:56:07Z

Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut

mailbox: imx: Staticize and constify driver ops

2026-05-18T22:56:07Z

Set the ops structure as static const. The structure is not accessible from outside of this driver and is not going to be modified at runtime. Signed-off-by: Marek Vasut Reviewed-by: Peng Fan