linux-kernel - Re: [PATCH v4 2/5] dmaengine: imx-sdma: add imx8mq sdma compatible parts

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Date:   Fri, 25 Jan 2019 10:35:30 +0100
From:   Lucas Stach <l.stach@...gutronix.de>
To:     "Angus Ainslie (Purism)" <angus@...ea.ca>
Cc:     angus.ainslie@...i.sm, Vinod Koul <vkoul@...nel.org>,
        dmaengine@...r.kernel.org, NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Daniel Baluta <daniel.baluta@...il.com>
Subject: Re: [PATCH v4 2/5] dmaengine: imx-sdma: add imx8mq sdma compatible
 parts

Am Donnerstag, den 24.01.2019, 19:55 -0700 schrieb Angus Ainslie (Purism):
> This is identical to the imx7d data structures but we need to
> be able to differentiate that the imx8mq has 2 sdma controllers.

No, we don't, see comment on patch 4/5. This can reuse the imx7d data.

Regards,
Lucas

> Signed-off-by: Angus Ainslie (Purism) <angus@...ea.ca>
> ---
>  drivers/dma/imx-sdma.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
> index 5e5ef0b5a973..ec6fb48f387a 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -556,6 +556,12 @@ static struct sdma_driver_data sdma_imx7d = {
> >  	.script_addrs = &sdma_script_imx7d,
>  };
>  
> +static struct sdma_driver_data sdma_imx8mq = {
> > +	.chnenbl0 = SDMA_CHNENBL0_IMX35,
> > +	.num_events = 48,
> > +	.script_addrs = &sdma_script_imx7d,
> +};
> +
>  static const struct platform_device_id sdma_devtypes[] = {
> >  	{
> >  		.name = "imx25-sdma",
> @@ -578,6 +584,9 @@ static const struct platform_device_id sdma_devtypes[] = {
> >  	}, {
> >  		.name = "imx7d-sdma",
> >  		.driver_data = (unsigned long)&sdma_imx7d,
> > +	}, {
> > +		.name = "imx8mq-sdma",
> > +		.driver_data = (unsigned long)&sdma_imx8mq,
> >  	}, {
> >  		/* sentinel */
> >  	}
> @@ -592,6 +601,7 @@ static const struct of_device_id sdma_dt_ids[] = {
> >  	{ .compatible = "fsl,imx31-sdma", .data = &sdma_imx31, },
> >  	{ .compatible = "fsl,imx25-sdma", .data = &sdma_imx25, },
> >  	{ .compatible = "fsl,imx7d-sdma", .data = &sdma_imx7d, },
> > +	{ .compatible = "fsl,imx8mq-sdma", .data = &sdma_imx8mq, },
> >  	{ /* sentinel */ }
>  };
>  MODULE_DEVICE_TABLE(of, sdma_dt_ids);