Re: [PATCH 0/6] Add Xilinx RPU subsystem support

Tanmay Shah <tanmay.shah@xxxxxxxxxx> · Mon, 22 Nov 2021 12:11:06 +0530

On 11/22/21 11:08 AM, Tanmay Shah wrote:
This patch series adds bindings document for RPU subsystem found on Xilinx
ZynqMP platforms. It also adds device nodes and driver to enable RPU subsytem
in split mode and lockstep mode.

Xilinx ZynqMP platform contains Remote Processing Unit(RPU). RPU subsystem
contains two arm cortex r5f cores. RPU subsystem can be configured in
split mode, locsktep mode and single-cpu mode.

RPU subsystem also contains 4 Tightly Coupled Memory(TCM) banks. In lockstep
mode, all 4 banks are combined and total of 256KB memory is made available to
r5 core0. In split mode, both cores can access two TCM banks i.e. 128 KB.

RPU can also fetch data and execute instructions from DDR memory along with
TCM memory.

Ben Levinsky (3):
   firmware: xilinx: Add ZynqMP firmware ioctl enums for RPU
     configuration.
   firmware: xilinx: Add shutdown/wakeup APIs
   firmware: xilinx: Add RPU configuration APIs

Tanmay Shah (3):
   dt-bindings: remoteproc: Add Xilinx RPU subsystem bindings
   arm64: dts: xilinx: zynqmp: Add RPU subsystem device node
   drivers: remoteproc: Add Xilinx r5 remoteproc driver

  .../bindings/remoteproc/xlnx,r5f-rproc.yaml   | 139 +++
  arch/arm64/boot/dts/xilinx/zynqmp.dtsi        |  17 +
  drivers/firmware/xilinx/zynqmp.c              |  96 ++
  drivers/remoteproc/Kconfig                    |  12 +
  drivers/remoteproc/Makefile                   |   1 +
  drivers/remoteproc/xlnx_r5_remoteproc.c       | 959 ++++++++++++++++++
  include/dt-bindings/power/xlnx-zynqmp-power.h |   6 +
  include/linux/firmware/xlnx-zynqmp.h          |  60 ++
  8 files changed, 1290 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/remoteproc/xlnx,r5f-rproc.yaml
  create mode 100644 drivers/remoteproc/xlnx_r5_remoteproc.c

base-commit: c1fe10d238c0256a77dbc4bf6493b9782b2a218d
--
2.25.1

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Hi all, above footer (with proprietary copyrights) was appended 
automatically out of my knowledge after using git send-email command.

I will work on this and send v2 which does not contain this footer. 
Please ignore this patch series for now.

Thanks,

Tanmay