linux-kernel - Re: [PATCH v2 6/6] remoteproc/pru: Add support for various PRU cores on K3 J721E SoCs

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Date:   Fri, 4 Dec 2020 15:14:35 +0100
From:   Grzegorz Jaszczyk <grzegorz.jaszczyk@...aro.org>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>
Cc:     Ohad Ben Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        "Anna, Suman" <s-anna@...com>, linux-remoteproc@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Lee Jones <lee.jones@...aro.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        "Bajjuri, Praneeth" <praneeth@...com>,
        Roger Quadros <rogerq@...com>
Subject: Re: [PATCH v2 6/6] remoteproc/pru: Add support for various PRU cores
 on K3 J721E SoCs

Hi Mathieu,

On Thu, 3 Dec 2020 at 19:53, Mathieu Poirier <mathieu.poirier@...aro.org> wrote:
>
> On Thu, Nov 19, 2020 at 03:08:50PM +0100, Grzegorz Jaszczyk wrote:
> > From: Suman Anna <s-anna@...com>
> >
> > The K3 J721E family of SoCs have a revised version of the AM65x ICSSG IP
> > and contains two instances of this newer ICSSG IP. Each ICSSG processor
> > subsystem contains 2 primary PRU cores, 2 auxiliary PRU cores called RTUs,
> > and 2 new auxiliary cores called Transmit PRUs (Tx_PRUs).
> >
> > Enhance the existing PRU remoteproc driver to support these new PRU
> > and RTU cores by using specific compatibles. The cores have the same
> > memory copying limitations as on AM65x, so reuses the custom memcpy
> > function within the driver's ELF loader implementation. The initial
> > names for the firmware images for each PRU core are retrieved from
> > DT nodes, and can be adjusted through sysfs if required.
> >
> > Signed-off-by: Suman Anna <s-anna@...com>
> > Co-developed-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@...aro.org>
> > Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@...aro.org>
>
> Reviewed-by: Mathieu Poirier <mathieu.poirier@...aro.org>

Thank you for all your review,
Grzegorz

>
> > ---
> >  drivers/remoteproc/pru_rproc.c | 3 +++
> >  1 file changed, 3 insertions(+)
> >
> > diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c
> > index 48c1c51e0d42..96f689283a8b 100644
> > --- a/drivers/remoteproc/pru_rproc.c
> > +++ b/drivers/remoteproc/pru_rproc.c
> > @@ -852,6 +852,9 @@ static const struct of_device_id pru_rproc_match[] = {
> >       { .compatible = "ti,am654-pru",         .data = &k3_pru_data },
> >       { .compatible = "ti,am654-rtu",         .data = &k3_rtu_data },
> >       { .compatible = "ti,am654-tx-pru",      .data = &k3_tx_pru_data },
> > +     { .compatible = "ti,j721e-pru",         .data = &k3_pru_data },
> > +     { .compatible = "ti,j721e-rtu",         .data = &k3_rtu_data },
> > +     { .compatible = "ti,j721e-tx-pru",      .data = &k3_tx_pru_data },
> >       {},
> >  };
> >  MODULE_DEVICE_TABLE(of, pru_rproc_match);
> > --
> > 2.29.0
> >