Good morning, I have received your patchset but the backlog accumulated over the last little while as become impressive. As such I may not be able to provide a review in a timeframe that usually expected. Thanks, Mathieu On Mon, Nov 15, 2021 at 02:50:29PM +0100, Julien Massot wrote: > Most of the SoCs in the R-Car gen3 SoC series such as > H3,M3 and E3 have an 'Arm Realtime Core'. > This Realtime core is an Arm Cortex-R7 clocked at 800MHz. > This series adds initial support to load a firmware and start > this remote processor through the remoteproc subsystem. > > This series depends on > https://patchwork.kernel.org/project/linux-renesas-soc/patch/20211022122101.66998-1-julien.massot@xxxxxxx/ > to be able to set the Cortex-R7 boot address. > > One of the way to test this driver is to use the zephyr upstream support > for h3ulcb board 'blinky' demo is my favorite testing firmware. > > To generate a firmware with the zephyr project. > > follow this starting guide > https://docs.zephyrproject.org/2.7.0/getting_started/index.html > > Then compile your zephyr demo > west build -b rcar_h3ulcb_cr7 zephyr/samples/basic/blinky \ > -DCONFIG_KERNEL_ENTRY=\"_vector_table\" \ > --build-dir h3-blinky > > Then you can use h3-blinky/zephyr/zephyr.elf as a testing > firmware. > > Patch 1/3 adds the dt-bindings > > Patch 2/3 adds entries into the dts/dtsi files for r8a77951, > my testing platform. This driver has also been tested on E3 and M3, > but lacks proper zephyr support at the moment. > > Modifications to r8a77951-ulcb.dts are given as usage example > and may be dropped in future patchset since it use some memory > range that may be reserved for other usage. > > Patch 3/3 is a small driver to cover basic remoteproc > usage: loading firmware from filesystem, starting and stopping the > Cortex-r7 processor. > > Julien Massot (3): > dt-bindings: remoteproc: Add Renesas R-Car > arm64: dts: renesas: r8a77951: Add CR7 realtime processor > remoteproc: Add Renesas rcar driver > > .../remoteproc/renesas,rcar-rproc.yaml | 66 +++++ > arch/arm64/boot/dts/renesas/r8a77951-ulcb.dts | 15 ++ > arch/arm64/boot/dts/renesas/r8a77951.dtsi | 7 + > drivers/remoteproc/Kconfig | 12 + > drivers/remoteproc/Makefile | 1 + > drivers/remoteproc/rcar_rproc.c | 226 ++++++++++++++++++ > 6 files changed, 327 insertions(+) > create mode 100644 Documentation/devicetree/bindings/remoteproc/renesas,rcar-rproc.yaml > create mode 100644 drivers/remoteproc/rcar_rproc.c > > -- > 2.31.1 > >
