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

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Date:   Mon, 22 Nov 2021 12:11:06 +0530
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>,
        <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 0/6] Add Xilinx RPU subsystem support


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
>
> This email and any attachments are intended for the sole use of the named recipient(s) and contain(s) confidential information that may be proprietary, privileged or copyrighted under applicable law. If you are not the intended recipient, do not read, copy, or forward this email message or any attachments. Delete this email message and any attachments immediately.


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