linux-kernel - Re: [PATCH v2 3/3] media: nxp: imx8-isi: Add ISI support for i.MX95

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Message-ID: <aQovEV5d6bvihzFh@lizhi-Precision-Tower-5810>
Date: Tue, 4 Nov 2025 11:51:29 -0500
From: Frank Li <Frank.li@....com>
To: Guoniu Zhou <guoniu.zhou@....nxp.com>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, linux-media@...r.kernel.org,
	devicetree@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Guoniu Zhou <guoniu.zhou@....com>
Subject: Re: [PATCH v2 3/3] media: nxp: imx8-isi: Add ISI support for i.MX95

On Tue, Nov 04, 2025 at 11:21:07AM +0800, Guoniu Zhou wrote:
> From: Guoniu Zhou <guoniu.zhou@....com>
>
> The ISI module on i.MX95 supports up to eight channels and four link
> sources to obtain the image data for processing in its pipelines. It
> can process up to eight image sources at the same time.
>
> Add ISI basic functions support for i.MX95. It works well when system
> loading isn't very high, such as no ISI buffer overflow.

"It works well when system .. " is reduntant. Or "Qos optimization will
be added later for high loading case."

Reviewed-by: Frank Li <Frank.Li@....com>

>
> Signed-off-by: Guoniu Zhou <guoniu.zhou@....com>
> ---
>  drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c | 12 ++++++++++++
>  drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h |  1 +
>  2 files changed, 13 insertions(+)
>
> diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
> index adc8d9960bf0df87d4e475661a3439beaf5ce9f6..cf609320f19e91c9c0f57634fabd62e0ff65123b 100644
> --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
> @@ -337,6 +337,17 @@ static const struct mxc_isi_plat_data mxc_imx93_data = {
>  	.has_36bit_dma		= false,
>  };
>
> +static const struct mxc_isi_plat_data mxc_imx95_data = {
> +	.model			= MXC_ISI_IMX95,
> +	.num_ports		= 4,
> +	.num_channels		= 8,
> +	.reg_offset		= 0x10000,
> +	.ier_reg		= &mxc_imx8_isi_ier_v2,
> +	.set_thd		= &mxc_imx8_isi_thd_v1,
> +	.buf_active_reverse	= true,
> +	.has_36bit_dma		= true,
> +};
> +
>  static const struct mxc_isi_plat_data mxc_imx8qm_data = {
>  	.model			= MXC_ISI_IMX8QM,
>  	.num_ports		= 5,
> @@ -548,6 +559,7 @@ static const struct of_device_id mxc_isi_of_match[] = {
>  	{ .compatible = "fsl,imx8qxp-isi", .data = &mxc_imx8qxp_data },
>  	{ .compatible = "fsl,imx8ulp-isi", .data = &mxc_imx8ulp_data },
>  	{ .compatible = "fsl,imx93-isi", .data = &mxc_imx93_data },
> +	{ .compatible = "fsl,imx95-isi", .data = &mxc_imx95_data },
>  	{ /* sentinel */ },
>  };
>  MODULE_DEVICE_TABLE(of, mxc_isi_of_match);
> diff --git a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
> index e84af5127e4e7938e55e31b7063bee5e2cd4cb11..e52c7fc334b0f5624ade600914c275e7539290b4 100644
> --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
> +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
> @@ -161,6 +161,7 @@ enum model {
>  	MXC_ISI_IMX8QXP,
>  	MXC_ISI_IMX8ULP,
>  	MXC_ISI_IMX93,
> +	MXC_ISI_IMX95,
>  };
>
>  struct mxc_isi_plat_data {
>
> --
> 2.34.1
>