[PATCH v6 3/4] remoteproc: imx_dsp_rproc: Add remoteproc driver for DSP on i.MX

[Shengjiu Wang]

On Wed, Oct 13, 2021 at 1:06 AM Mathieu Poirier
<mathieu.poirier at linaro.org> wrote:
>
> On Mon, Oct 11, 2021 at 05:20:14PM +0800, Shengjiu Wang wrote:
> > Provide a basic driver to control DSP processor found on NXP i.MX8QM,
> > i.MX8QXP, i.MX8MP and i.MX8ULP.
> >
> > Currently it is able to resolve addresses between DSP and main CPU,
> > start and stop the processor, suspend and resume.
> >
> > The communication between DSP and main CPU is based on mailbox, there
> > are three mailbox channels (tx, rx, rxdb).
> >
> > This driver was tested on NXP i.MX8QM, i.MX8QXP, i.MX8MP and i.MX8ULP.
> >
> > Signed-off-by: Shengjiu Wang <shengjiu.wang at nxp.com>
> > Reviewed-by: Mathieu Poirier <mathieu.poirier at linaro.org>
> > ---
> >  drivers/remoteproc/Kconfig         |   11 +
> >  drivers/remoteproc/Makefile        |    1 +
> >  drivers/remoteproc/imx_dsp_rproc.c | 1206 ++++++++++++++++++++++++++++
> >  3 files changed, 1218 insertions(+)
> >  create mode 100644 drivers/remoteproc/imx_dsp_rproc.c
> >
> > diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
> > index dcb87a366ec7..f2e961f998ca 100644
> > --- a/drivers/remoteproc/Kconfig
> > +++ b/drivers/remoteproc/Kconfig
> > @@ -34,6 +34,17 @@ config IMX_REMOTEPROC
> >
> >         It's safe to say N here.
> >
> > +config IMX_DSP_REMOTEPROC
> > +     tristate "i.MX DSP remoteproc support"
> > +     depends on ARCH_MXC
> > +     depends on HAVE_ARM_SMCCC
> > +     select MAILBOX
> > +     help
> > +       Say y here to support iMX's DSP remote processors via the remote
> > +       processor framework.
> > +
> > +       It's safe to say N here.
> > +
> >  config INGENIC_VPU_RPROC
> >       tristate "Ingenic JZ47xx VPU remoteproc support"
> >       depends on MIPS || COMPILE_TEST
> > diff --git a/drivers/remoteproc/Makefile b/drivers/remoteproc/Makefile
> > index ce1abeb30907..0ac256b6c977 100644
> > --- a/drivers/remoteproc/Makefile
> > +++ b/drivers/remoteproc/Makefile
> > @@ -12,6 +12,7 @@ remoteproc-y                                += remoteproc_virtio.o
> >  remoteproc-y                         += remoteproc_elf_loader.o
> >  obj-$(CONFIG_REMOTEPROC_CDEV)                += remoteproc_cdev.o
> >  obj-$(CONFIG_IMX_REMOTEPROC)         += imx_rproc.o
> > +obj-$(CONFIG_IMX_DSP_REMOTEPROC)     += imx_dsp_rproc.o
> >  obj-$(CONFIG_INGENIC_VPU_RPROC)              += ingenic_rproc.o
> >  obj-$(CONFIG_MTK_SCP)                        += mtk_scp.o mtk_scp_ipi.o
> >  obj-$(CONFIG_OMAP_REMOTEPROC)                += omap_remoteproc.o
> > diff --git a/drivers/remoteproc/imx_dsp_rproc.c b/drivers/remoteproc/imx_dsp_rproc.c
> > new file mode 100644
> > index 000000000000..63749cfcf22f
> > --- /dev/null
> > +++ b/drivers/remoteproc/imx_dsp_rproc.c
> > @@ -0,0 +1,1206 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +// Copyright 2021 NXP
>
> I just noticed the '//' on the copyright line.  Please send a patch to change
> that to C style comments.
>
> Thanks,
> Mathieu

Ok, will send a patch for it.

best regards
Wang Shengjiu