linux-kernel - [PATCH v26 0/5] Add initial zynqmp R5 remoteproc driver

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Message-ID: <20210223154447.13247-1-ben.levinsky@xilinx.com>
Date:   Tue, 23 Feb 2021 07:44:42 -0800
From:   Ben Levinsky <ben.levinsky@...inx.com>
To:     <mathieu.poirier@...aro.org>
CC:     <devicetree@...r.kernel.org>, <linux-remoteproc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <michal.simek@...inx.com>
Subject: [PATCH v26 0/5] Add initial zynqmp R5 remoteproc driver

R5 is included in Xilinx Zynq UltraScale MPSoC so by adding this
remotproc driver, we can boot the R5 sub-system in two different
configurations -
	* Split
	* Lockstep

The Xilinx R5 Remoteproc Driver boots the R5's via calls to the Xilinx
Platform Management Unit that handles the R5 configuration, memory access
and R5 lifecycle management. The interface to this manager is done in this
driver via zynqmp_pm_* function calls.

v26:
- add prepare and unprepare to handle Xilinx platform management's
  request_node and release node using each core's list of srams
  that is constructed in each core's zynqmp_r5_probe.
- add new field sram to zynqmp_r5_rproc to store each core's srams
  being used as described in device tree. This helps to reduce unneeded looping
  of the sram prop in device tree. As now only zynqmp_r5_probe has to parse
  and validate each core's sram property. The ensuing prepare, unprepare
  and parse_fw logic are now much simpler.
- similarly add 'size' field to struct sram_addr_data to simplify
  prepare, unprepare and parse_fw.

Previous version:
https://patchwork.kernel.org/project/linux-remoteproc/list/?series=412083


Ben Levinsky (5):
  firmware: xilinx: Add ZynqMP firmware ioctl enums for RPU
    configuration.
  firmware: xilinx: Add shutdown/wakeup APIs
  firmware: xilinx: Add RPU configuration APIs
  dt-bindings: remoteproc: Add documentation for ZynqMP R5 rproc
    bindings
  remoteproc: Add initial zynqmp R5 remoteproc driver

 .../xilinx,zynqmp-r5-remoteproc.yaml          | 223 ++++
 drivers/firmware/xilinx/zynqmp.c              |  96 ++
 drivers/remoteproc/Kconfig                    |   8 +
 drivers/remoteproc/Makefile                   |   1 +
 drivers/remoteproc/zynqmp_r5_remoteproc.c     | 954 ++++++++++++++++++
 include/linux/firmware/xlnx-zynqmp.h          |  64 ++
 6 files changed, 1356 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/xilinx,zynqmp-r5-remoteproc.yaml
 create mode 100644 drivers/remoteproc/zynqmp_r5_remoteproc.c

-- 
2.17.1