[EXT] Re: [PATCH v4 1/7] dt-bindings: arm: fsl: add se-fw binding doc

[Pankaj Gupta]

> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
> Sent: Thursday, July 13, 2023 12:05 AM
> To: Conor Dooley <conor at kernel.org>; Pankaj Gupta
> <pankaj.gupta at nxp.com>
> Cc: shawnguo at kernel.org; s.hauer at pengutronix.de; kernel at pengutronix.de;
> clin at suse.com; conor+dt at kernel.org; pierre.gondois at arm.com; Jacky Bai
> <ping.bai at nxp.com>; Clark Wang <xiaoning.wang at nxp.com>; Wei Fang
> <wei.fang at nxp.com>; Peng Fan <peng.fan at nxp.com>; Bough Chen
> <haibo.chen at nxp.com>; festevam at gmail.com; dl-linux-imx <linux-
> imx at nxp.com>; davem at davemloft.net; robh+dt at kernel.org;
> krzysztof.kozlowski+dt at linaro.org; linux-arm-kernel at lists.infradead.org;
> devicetree at vger.kernel.org; linux-kernel at vger.kernel.org; Gaurav Jain
> <gaurav.jain at nxp.com>; alexander.stein at ew.tq-group.com; Sahil Malhotra
> <sahil.malhotra at nxp.com>; Aisheng Dong <aisheng.dong at nxp.com>; Varun
> Sethi <V.Sethi at nxp.com>
> Subject: [EXT] Re: [PATCH v4 1/7] dt-bindings: arm: fsl: add se-fw binding doc
> 
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> 
> On 12/07/2023 20:26, Conor Dooley wrote:
> > Hey,
> >
> > On Wed, Jul 12, 2023 at 05:42:13PM +0530, Pankaj Gupta wrote:
> >> The NXP's i.MX EdgeLock Enclave, a HW IP creating an embedded secure
> >> enclave within the SoC boundary to enable features like
> >> - HSM
> >> - SHE
> >> - V2X
> >>
> >> Communicates via message unit with linux kernel. This driver is
> >> enables communication ensuring well defined message sequence protocol
> >> between Application Core and enclave's firmware.
> >>
> >> Driver configures multiple misc-device on the MU, for multiple
> >> user-space applications can communicate on single MU.
> >>
> >> It exists on some i.MX processors. e.g. i.MX8ULP, i.MX93 etc.
> >>
> >> Signed-off-by: Pankaj Gupta <pankaj.gupta at nxp.com>
> >> ---
> >>  .../bindings/arm/freescale/fsl,se-fw.yaml     | 121 ++++++++++++++++++
> >>  1 file changed, 121 insertions(+)
> >>  create mode 100644
> >> Documentation/devicetree/bindings/arm/freescale/fsl,se-fw.yaml
> >>
> >> diff --git
> >> a/Documentation/devicetree/bindings/arm/freescale/fsl,se-fw.yaml
> >> b/Documentation/devicetree/bindings/arm/freescale/fsl,se-fw.yaml
> >> new file mode 100644
> >> index 000000000000..7567da0b4c21
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,se-fw.yaml
> >> @@ -0,0 +1,121 @@
> >> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) %YAML 1.2
> >> +---
> >> +$id:
> >> +https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdev
> >> +icetree.org%2Fschemas%2Farm%2Ffreescale%2Ffsl%2Cse-
> fw.yaml%23&data=0
> >>
> +5%7C01%7Cpankaj.gupta%40nxp.com%7Cde3f4d12573845f8b7db08db830
> 6b165%7
> >>
> +C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C638247836986636
> 866%7CUnk
> >>
> +nown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik
> 1ha
> >>
> +WwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=PUeKu1fQmYpTsN72LA
> YGRS2daqnO
> >> +gzATfe0ckNfYdik%3D&reserved=0
> >
> > I think on v3 you were asked to use a filename that matches the
> > compatibles?
> >
> >> +$schema:
> >> +https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdev
> >> +icetree.org%2Fmeta-
> schemas%2Fcore.yaml%23&data=05%7C01%7Cpankaj.gupt
> >>
> +a%40nxp.com%7Cde3f4d12573845f8b7db08db8306b165%7C686ea1d3bc2
> b4c6fa92
> >>
> +cd99c5c301635%7C0%7C0%7C638247836986636866%7CUnknown%7CTW
> FpbGZsb3d8e
> >>
> +yJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D
> %7C
> >>
> +3000%7C%7C%7C&sdata=tufHqsLbzUCQjGG9KzQ5dy1Htlk2gc2Ik5gEAFWym
> %2FI%3D
> >> +&reserved=0
> >> +
> >> +title: NXP i.MX EdgeLock Enclave Firmware (ELEFW)
> >> +
> >> +maintainers:
> >> +  - Pankaj Gupta <pankaj.gupta at nxp.com>
> >
> >> +  value, i.e., supported SoC(s) are imx8ulp, imx93.
> >
> >> +
> >> +properties:
> >> +  compatible:
> >> +    enum:
> >> +      - fsl,imx-ele
> >
> > This looks like a generic compatible, not a specific one, but you use
> > it on the imx8ulp. I would have expected that you would have something
> > like "fsl,imx8ulp-ele" for that.
> 
> Yeah, this one looks generic, so not what we expect.

This change left un-changed in V4. It is "fsl,se-fw", instead of "fsl,imx8ulp-ele".
I will change in V5.

> 
> >
> >> +      - fsl,imx93-ele
> >
> >
> >> +
> >> +  mboxes:
> >> +    description:
> >> +      A list of phandles of TX MU channels followed by a list of phandles of
> >> +      RX MU channels. The number of expected tx and rx channels is 1 TX,
> and
> >> +      1 RX channels.
> 
> Don't repeat constraints in free form text. This is obvious from the items
> below.

Removed the line till here.

> 
> 
> Best regards,
> Krzysztof