linux-kernel - RE: [EXT] Re: [PATCH v2 5/5] media: nxp: imx8-isi: Add ISI support for i.MX91

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Message-ID:
 <AS8PR04MB9080BBDB6689E5051FEE5953FA12A@AS8PR04MB9080.eurprd04.prod.outlook.com>
Date: Mon, 22 Sep 2025 02:06:14 +0000
From: "G.N. Zhou" <guoniu.zhou@....com>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>
CC: 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>, Frank Li <frank.li@....com>,
	"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"imx@...ts.linux.dev" <imx@...ts.linux.dev>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: RE: [EXT] Re: [PATCH v2 5/5] media: nxp: imx8-isi: Add ISI support
 for i.MX91

Hi Laurent,

Thanks for your review.

> -----Original Message-----
> From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> Sent: Monday, September 22, 2025 6:28 AM
> To: G.N. Zhou <guoniu.zhou@....com>
> Cc: 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>; Frank Li
> <frank.li@....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
> Subject: [EXT] Re: [PATCH v2 5/5] media: nxp: imx8-isi: Add ISI support for
> i.MX91
> 
> Caution: This is an external email. Please take care when clicking links or
> opening attachments. When in doubt, report the message using the 'Report this
> email' button
> 
> 
> Hi Guoniu,
> 
> Thank you for the patch.
> 
> On Fri, Sep 05, 2025 at 02:56:02PM +0800, Guoniu Zhou wrote:
> > The ISI module on i.MX91 implements only one channel and one parallel
> > camera input. As no input source selection is required, gasket ops are
> > unnecessary.
> >
> > 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
> >
> 0155c75983f02f33f7f0669e73188222ebb5e816..c3d411ddf492eb27b372763c
> e5d3
> > 44a90c6ec524 100644
> > --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
> > +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.c
> > @@ -347,6 +347,17 @@ static const struct mxc_isi_plat_data
> mxc_imx8ulp_data = {
> >       .has_36bit_dma          = false,
> >  };
> >
> > +static const struct mxc_isi_plat_data mxc_imx91_data = {
> > +     .model                  = MXC_ISI_IMX91,
> > +     .num_ports              = 1,
> > +     .num_channels           = 1,
> > +     .reg_offset             = 0,
> > +     .ier_reg                = &mxc_imx8_isi_ier_v2,
> > +     .set_thd                = &mxc_imx8_isi_thd_v1,
> > +     .buf_active_reverse     = true,
> > +     .has_36bit_dma          = false,
> > +};
> > +
> >  static const struct mxc_isi_plat_data mxc_imx93_data = {
> >       .model                  = MXC_ISI_IMX93,
> >       .num_ports              = 1,
> > @@ -547,6 +558,7 @@ static const struct of_device_id mxc_isi_of_match[] =
> {
> >       { .compatible = "fsl,imx8qm-isi", .data = &mxc_imx8qm_data },
> >       { .compatible = "fsl,imx8qxp-isi", .data = &mxc_imx8qxp_data },
> >       { .compatible = "fsl,imx8ulp-isi", .data = &mxc_imx8ulp_data },
> > +     { .compatible = "fsl,imx91-isi", .data = &mxc_imx91_data },
> >       { .compatible = "fsl,imx93-isi", .data = &mxc_imx93_data },
> >       { /* sentinel */ },
> >  };
> > 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..3cbd35305af0f8026c4f76b5
> eb5d
> > 0864f8e36dc3 100644
> > --- a/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
> > +++ b/drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h
> > @@ -160,6 +160,7 @@ enum model {
> >       MXC_ISI_IMX8QM,
> >       MXC_ISI_IMX8QXP,
> >       MXC_ISI_IMX8ULP,
> > +     MXC_ISI_IMX91,
> >       MXC_ISI_IMX93,
> >  };
> 
> The model field is unused, should we drop it ? That's a candidate for a separate
> patch, for this patch

Agree.

> 
> Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> 
> >
> 
> --
> Regards,
> 
> Laurent Pinchart