The SBI v3.0 MPXY extension [1] and RPMI v1.0 [2] specifications are in stable state and under ARC review at the RISC-V International so as part of the RVI process we would like to receive an early feedback on the device tree bindings and mailbox drivers hence this series. Currently, most of the RPMI and MPXY drivers are in OpenSBI whereas for Linux only has SBI MPXY mailbox controller driver and RPMI clock driver. This series will be expanded in the future to include some more RPMI drivers and ACPI support. These patches can be found in the riscv_sbi_mpxy_mailbox_v1 branch at: https://github.com/avpatel/linux.git To test these patches, boot Linux on "virt,rpmi=on" machine with latest OpenSBI and QEMU from the dev-upstream QEMU branch at: https://github.com/ventanamicro/qemu.git [1] https://github.com/riscv-non-isa/riscv-sbi-doc/releases [2] https://github.com/riscv-non-isa/riscv-rpmi/releases Anup Patel (7): riscv: Add new error codes defined by SBI v3.0 dt-bindings: mailbox: Add bindings for RPMI shared memory transport dt-bindings: mailbox: Add bindings for RISC-V SBI MPXY extension RISC-V: Add defines for the SBI message proxy extension mailbox: Add common header for RPMI messages sent via mailbox mailbox: Add RISC-V SBI message proxy (MPXY) based mailbox driver dt-bindings: clock: Add bindings for RISC-V RPMI clock service group Rahul Pathak (1): clk: Add clock driver for the RISC-V RPMI clock service group .../bindings/clock/riscv,rpmi-clock.yaml | 78 ++ .../mailbox/riscv,rpmi-shmem-mbox.yaml | 135 +++ .../bindings/mailbox/riscv,sbi-mpxy-mbox.yaml | 54 + arch/riscv/include/asm/sbi.h | 69 ++ drivers/clk/Kconfig | 8 + drivers/clk/Makefile | 1 + drivers/clk/clk-rpmi.c | 588 +++++++++++ drivers/mailbox/Kconfig | 11 + drivers/mailbox/Makefile | 2 + drivers/mailbox/riscv-sbi-mpxy-mbox.c | 979 ++++++++++++++++++ include/linux/mailbox/riscv-rpmi-message.h | 218 ++++ 11 files changed, 2143 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/riscv,rpmi-clock.yaml create mode 100644 Documentation/devicetree/bindings/mailbox/riscv,rpmi-shmem-mbox.yaml create mode 100644 Documentation/devicetree/bindings/mailbox/riscv,sbi-mpxy-mbox.yaml create mode 100644 drivers/clk/clk-rpmi.c create mode 100644 drivers/mailbox/riscv-sbi-mpxy-mbox.c create mode 100644 include/linux/mailbox/riscv-rpmi-message.h -- 2.43.0
