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

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Date:   Thu, 3 Dec 2020 11:53:32 -0700
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Grzegorz Jaszczyk <grzegorz.jaszczyk@...aro.org>
Cc:     ohad@...ery.com, bjorn.andersson@...aro.org, s-anna@...com,
        linux-remoteproc@...r.kernel.org, robh+dt@...nel.org,
        lee.jones@...aro.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, praneeth@...com,
        rogerq@...com
Subject: Re: [PATCH v2 6/6] remoteproc/pru: Add support for various PRU cores
 on K3 J721E SoCs

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>

> ---
>  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
>