linux-kernel - [PATCH 0/6] Add Xilinx RPU subsystem support

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Date:   Sun, 21 Nov 2021 21:38:50 -0800
From:   Tanmay Shah <tanmay.shah@...inx.com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Michal Simek <michal.simek@...inx.com>
CC:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Ben Levinsky <ben.levinsky@...inx.com>,
        Bill Mills <bill.mills@...aro.org>,
        Sergei Korneichuk <sergei.korneichuk@...inx.com>,
        Tanmay Shah <tanmay.shah@...inx.com>,
        <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH 0/6] Add Xilinx RPU subsystem support

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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