linux-kernel - [RFC PATCH 0/3] provide imx rproc driver

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Date:   Wed, 14 Jun 2017 22:48:52 +0200
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     devicetree@...r.kernel.org, kernel@...gutronix.de,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        Shawn Guo <shawnguo@...nel.org>,
        Fabio Estevam <fabio.estevam@....com>,
        Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-remoteproc@...r.kernel.org
Cc:     Oleksij Rempel <o.rempel@...gutronix.de>
Subject: [RFC PATCH 0/3] provide imx rproc driver

Hallo all,

this is RFC patchset to provide remoteproc functionality on
imx7d SoC.
Since current kernel do not have devicetrees for board which
I used for testing, this RFC patchset includes this too.

For testing I used this simple counter written in ASM:
======================================
        .syntax unified
        .text
        .thumb
        .int 0x10020000                 @ Initial SP value
        .int reset + 1

reset:

        mov     r0, #0x55
        ldr     r1, =(0x40)
1:
        str     r0, [r1]
        add     r0, 1
        b       1b

        /* Dummy data, required by remoteproc loader */
        /* Please FIXME, this part seem to be incorrect */
        .data
        .section .resource_table, "aw"
        .word   1, 0, 0, 0      /* struct resource_table base */
        .word   0               /* uint32_t offset[1] */
============================================================
compiled with:
${CROSS}as -o imx7m4.o imx7m4.S
${CROSS}ld -Ttext=0x0 -o imx7m4.elf imx7m4.o
cp imx7m4.elf /srv/nfs/sid-armhf/lib/firmware/rproc-imx_rproc-fw

Functionality was confirmed with current OpenOCD master.
OpenOCD cfg file can be found here:
https://github.com/olerem/openocd/blob/imx7-2017.06.14/tcl/target/imx7.cfg

Comment and suggestions are welcome.

Regards,
Oleksij

Oleksij Rempel (3):
  ARM: dts: imx7d: add imx7d-phyboard-zeta
  remoteproc: imx_rproc: add a NXP/Freescale imx rproc driver
  ARM: dts: imx7s: add rproc node

 arch/arm/boot/dts/Makefile                |   1 +
 arch/arm/boot/dts/imx7d-pba-c-09.dtsi     | 272 ++++++++++++++++++++++++++++++
 arch/arm/boot/dts/imx7d-peb-av-02.dtsi    | 104 ++++++++++++
 arch/arm/boot/dts/imx7d-peb-eval-02.dtsi  | 130 ++++++++++++++
 arch/arm/boot/dts/imx7d-phyboard-zeta.dts | 144 ++++++++++++++++
 arch/arm/boot/dts/imx7d-phycore-som.dtsi  | 272 ++++++++++++++++++++++++++++++
 arch/arm/boot/dts/imx7d-pinfunc-lpsr.h    |  76 +++++++++
 arch/arm/boot/dts/imx7s.dtsi              |   9 +
 drivers/remoteproc/Kconfig                |   8 +
 drivers/remoteproc/Makefile               |   1 +
 drivers/remoteproc/imx_rproc.c            | 264 +++++++++++++++++++++++++++++
 11 files changed, 1281 insertions(+)
 create mode 100644 arch/arm/boot/dts/imx7d-pba-c-09.dtsi
 create mode 100644 arch/arm/boot/dts/imx7d-peb-av-02.dtsi
 create mode 100644 arch/arm/boot/dts/imx7d-peb-eval-02.dtsi
 create mode 100644 arch/arm/boot/dts/imx7d-phyboard-zeta.dts
 create mode 100644 arch/arm/boot/dts/imx7d-phycore-som.dtsi
 create mode 100644 arch/arm/boot/dts/imx7d-pinfunc-lpsr.h
 create mode 100644 drivers/remoteproc/imx_rproc.c

-- 
2.11.0