For Xilinx-AMD Versal and Versal NET SOC's there exist also inter-processor-interrupts (IPIs) without IPI Message Buffers. For these enable use of IPI Mailbox driver for send/receive as well. This is enabled with new compatible string: "xlnx,versal-ipi-mailbox" Original, buffered usage for ZynqMP based SOC is still supported. Note that the linked patch provides corresponding bindings. Depends on: https://lore.kernel.org/all/20231214054224.957336-3-tanmay.shah@xxxxxxx/T/ v2: - formatting in 2/3 patch - remove extra handling in 3/3 versal_ipi_setup() Ben Levinsky (3): mailbox: zynqmp: Move of_match structure closer to usage mailbox: zynqmp: Move buffered IPI setup to of_match selected routine mailbox: zynqmp: Enable Bufferless IPI usage on Versal-based SOC's drivers/mailbox/zynqmp-ipi-mailbox.c | 258 ++++++++++++++++++++++----- 1 file changed, 214 insertions(+), 44 deletions(-) -- 2.25.1
