netdev - Re: [PATCH v7 0/4] Introduce PRU platform consumer API

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Message-ID: <CANLsYkyrvAcVa8VNkbsrxyAC-60fyGYoXVS=fqwLcsMverzNcg@mail.gmail.com>
Date:   Thu, 6 Apr 2023 07:15:12 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Md Danish Anwar <a0501179@...com>
Cc:     MD Danish Anwar <danishanwar@...com>,
        "Andrew F. Davis" <afd@...com>, Suman Anna <s-anna@...com>,
        Roger Quadros <rogerq@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        Nishanth Menon <nm@...com>, linux-remoteproc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-omap@...r.kernel.org, srk@...com, devicetree@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v7 0/4] Introduce PRU platform consumer API

On Thu, 6 Apr 2023 at 00:54, Md Danish Anwar <a0501179@...com> wrote:
>
> On 04/04/23 17:23, MD Danish Anwar wrote:
> > Hi All,
> > The Programmable Real-Time Unit and Industrial Communication Subsystem (PRU-ICSS
> > or simply PRUSS) on various TI SoCs consists of dual 32-bit RISC cores
> > (Programmable Real-Time Units, or PRUs) for program execution.
> >
> > There are 3 foundation components for TI PRUSS subsystem: the PRUSS platform
> > driver, the PRUSS INTC driver and the PRUSS remoteproc driver. All of them have
> > already been merged and can be found under:
> > 1) drivers/soc/ti/pruss.c
> >    Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml
> > 2) drivers/irqchip/irq-pruss-intc.c
> >    Documentation/devicetree/bindings/interrupt-controller/ti,pruss-intc.yaml
> > 3) drivers/remoteproc/pru_rproc.c
> >    Documentation/devicetree/bindings/remoteproc/ti,pru-consumer.yaml
> >
> > The programmable nature of the PRUs provide flexibility to implement custom
> > peripheral interfaces, fast real-time responses, or specialized data handling.
> > Example of a PRU consumer drivers will be:
> >   - Software UART over PRUSS
> >   - PRU-ICSS Ethernet EMAC
> >
> > In order to make usage of common PRU resources and allow the consumer drivers
> > to configure the PRU hardware for specific usage the PRU API is introduced.
> >
> > This is the v7 of the old patch series [9].
> >
>
> Hi Mathieu, Can you please review this series. I have addressed comments made
> by you in v5. I have also addressed Simon's comment in v6 and removed redundant
> macros from pruss.h header file.
>

You are pushing me to review your code 19 hours after sending the last
revision?  Are you serious?

> > Changes from v6 [9] to v7:
> > *) Addressed Simon's comment on patch 3 of this series and dropped unnecassary
> > macros from the patch.
> >
> > Changes from v5 [1] to v6:
> > *) Added Reviewed by tags of Roger and Tony to the patches.
> > *) Added Acked by tag of Mathieu to patch 2 of this series.
> > *) Added NULL check for @mux in pruss_cfg_get_gpmux() API.
> > *) Added comment to the pruss_get() function documentation mentioning it is
> > expected the caller will have done a pru_rproc_get() on @rproc.
> > *) Fixed compilation warning "warning: ‘pruss_cfg_update’ defined but not used"
> > in patch 3 by squashing patch 3 [7] and patch 5 [8] of previous revision
> > together. Squashed patch 5 instead of patch 4 with patch 3 because patch 5 uses
> > both read() and update() APIs where as patch 4 only uses update() API.
> > Previously pruss_cfg_read()/update() APIs were intoroduced in patch 3
> > and used in patch 4 and 5. Now these APIs are introduced as well as used in
> > patch 3.
> >
>
>
> --
> Thanks and Regards,
> Danish.