Hi Valentina, On Thu, 12 Sept 2024 at 10:48, Valentina Fernandez <valentina.fernandezalanis@xxxxxxxxxxxxx> wrote: > > Hello all, > > This series adds support for the Microchip Inter-Processor Communication > (IPC) mailbox controller, as well as an IPC remoteproc platform driver. > > Microchip's family of RISC-V SoCs typically has one or more clusters > that can be configured to run in Asymmetric Multi-Processing (AMP) mode. > > The Microchip IPC is used to send messages between processors using > an interrupt signaling mechanism. The driver uses the RISC-V Supervisor > Binary Interface (SBI) to communicate with software running in machine > mode (M-mode) to access the IPC hardware block. > > Additional details on the Microchip vendor extension and the IPC > function IDs described in the driver can be found in the following > documentation: > > https://github.com/linux4microchip/microchip-sbi-ecall-extension > > The IPC remoteproc platform driver allows for starting and stopping > firmware on the remote cluster(s) and facilitates RPMsg communication. > The remoteproc attach/detach operations are also supported for use cases > where the firmware is loaded by the Hart Software Services > (zero-stage bootloader) before Linux boots. > > Error Recovery and Power Management features are not currently > supported in the remoteproc platform driver. > > The PIC64GX MPU has a Mi-V IHC block, this will be added to the PIC64GX > dts after the initial upstreaming: > > https://patchwork.kernel.org/project/linux-riscv/patch/20240725121609.13101-18-pierre-henry.moussay@xxxxxxxxxxxxx/ > > Thanks, > Valentina > > Valentina Fernandez (5): > riscv: asm: vendorid_list: Add Microchip Technology to the vendor list > dt-bindings: mailbox: add binding for Microchip IPC mailbox driver > mailbox: add Microchip IPC support > dt-bindings: remoteproc: add binding for Microchip IPC remoteproc > remoteproc: add support for Microchip IPC remoteproc platform driver > > .../bindings/mailbox/microchip,sbi-ipc.yaml | 115 ++++ > .../remoteproc/microchip,ipc-remoteproc.yaml | 84 +++ > arch/riscv/include/asm/vendorid_list.h | 1 + > drivers/mailbox/Kconfig | 12 + > drivers/mailbox/Makefile | 2 + > drivers/mailbox/mailbox-mchp-ipc-sbi.c | 539 ++++++++++++++++++ > drivers/remoteproc/Kconfig | 12 + > drivers/remoteproc/Makefile | 1 + > drivers/remoteproc/mchp_ipc_remoteproc.c | 461 +++++++++++++++ > include/linux/mailbox/mchp-ipc.h | 23 + > 10 files changed, 1250 insertions(+) It might be easier to split this patchset in two and proceed incrementally, i.e upstream the mailbox driver first and then the remoteproc part. Regards, Mathieu > create mode 100644 Documentation/devicetree/bindings/mailbox/microchip,sbi-ipc.yaml > create mode 100644 Documentation/devicetree/bindings/remoteproc/microchip,ipc-remoteproc.yaml > create mode 100644 drivers/mailbox/mailbox-mchp-ipc-sbi.c > create mode 100644 drivers/remoteproc/mchp_ipc_remoteproc.c > create mode 100644 include/linux/mailbox/mchp-ipc.h > > -- > 2.34.1 >
