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Message-ID: <DB9PR04MB9628C50A44BF8DC09C75CAF9892B9@DB9PR04MB9628.eurprd04.prod.outlook.com>
Date: Wed, 19 Oct 2022 02:10:03 +0000
From: Jun Li <jun.li@....com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Xu Yang <xu.yang_2@....com>,
"Peng Fan (OSS)" <peng.fan@....nxp.com>,
"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"krzysztof.kozlowski+dt@...aro.org"
<krzysztof.kozlowski+dt@...aro.org>,
"shawnguo@...nel.org" <shawnguo@...nel.org>,
"s.hauer@...gutronix.de" <s.hauer@...gutronix.de>
CC: "kernel@...gutronix.de" <kernel@...gutronix.de>,
"festevam@...il.com" <festevam@...il.com>,
dl-linux-imx <linux-imx@....com>,
"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>, Peng Fan <peng.fan@....com>
Subject: RE: [EXT] Re: [PATCH V2 1/6] dt-bindings: usb: usbmisc-imx: convert
to DT schema
Hi,
> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Sent: Wednesday, October 19, 2022 6:52 AM
> To: Xu Yang <xu.yang_2@....com>; Peng Fan (OSS) <peng.fan@....nxp.com>;
> gregkh@...uxfoundation.org; robh+dt@...nel.org;
> krzysztof.kozlowski+dt@...aro.org; shawnguo@...nel.org;
> s.hauer@...gutronix.de
> Cc: kernel@...gutronix.de; festevam@...il.com; dl-linux-imx
> <linux-imx@....com>; linux-usb@...r.kernel.org;
> devicetree@...r.kernel.org; linux-kernel@...r.kernel.org;
> linux-arm-kernel@...ts.infradead.org; Jun Li <jun.li@....com>; Peng Fan
> <peng.fan@....com>
> Subject: Re: [EXT] Re: [PATCH V2 1/6] dt-bindings: usb: usbmisc-imx: convert
> to DT schema
>
> On 16/10/2022 23:17, Xu Yang wrote:
> > Hi Krzysztof,
> >
> >> -----Original Message-----
> >> From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> >> Sent: Saturday, October 15, 2022 10:53 PM
> >> To: Peng Fan (OSS) <peng.fan@....nxp.com>;
> >> gregkh@...uxfoundation.org; robh+dt@...nel.org;
> >> krzysztof.kozlowski+dt@...aro.org; shawnguo@...nel.org;
> >> s.hauer@...gutronix.de; Xu Yang <xu.yang_2@....com>
> >> Cc: kernel@...gutronix.de; festevam@...il.com; dl-linux-imx
> >> <linux-imx@....com>; linux-usb@...r.kernel.org;
> >> devicetree@...r.kernel.org; linux-kernel@...r.kernel.org;
> >> linux-arm-kernel@...ts.infradead.org; Jun Li <jun.li@....com>; Peng
> >> Fan <peng.fan@....com>
> >> Subject: [EXT] Re: [PATCH V2 1/6] dt-bindings: usb: usbmisc-imx:
> >> convert to DT schema
> >>
> >> Caution: EXT Email
> >>
> >> On 14/10/2022 05:51, Peng Fan (OSS) wrote:
> >>> From: Peng Fan <peng.fan@....com>
> >>>
> >>> Convert usbmisc-imx to DT schema format.
> >>>
> >>> Signed-off-by: Peng Fan <peng.fan@....com>
> >>> ---
> >>> .../devicetree/bindings/usb/fsl,usbmisc.yaml | 52
> +++++++++++++++++++
> >>> .../devicetree/bindings/usb/usbmisc-imx.txt | 18 -------
> >>> 2 files changed, 52 insertions(+), 18 deletions(-) create mode
> >>> 100644 Documentation/devicetree/bindings/usb/fsl,usbmisc.yaml
> >>> delete mode 100644
> >>> Documentation/devicetree/bindings/usb/usbmisc-imx.txt
> >>>
> >>> diff --git a/Documentation/devicetree/bindings/usb/fsl,usbmisc.yaml
> >> b/Documentation/devicetree/bindings/usb/fsl,usbmisc.yaml
> >>> new file mode 100644
> >>> index 000000000000..c83ffb6729b5
> >>> --- /dev/null
> >>> +++ b/Documentation/devicetree/bindings/usb/fsl,usbmisc.yaml
> >>> @@ -0,0 +1,52 @@
> >>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> >>> +---
> >>> +$id:
> >>
> https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevi
> >>
> cetree.org%2Fschemas%2Fusb%2Ffsl%2Cusbmi&data=05%7C01%7Cjun.li%40
> >>
> nxp.com%7C15ee8a29acf04f95ff4108dab15b5b88%7C686ea1d3bc2b4c6fa92cd99c
> >>
> 5c301635%7C0%7C0%7C638017303177794862%7CUnknown%7CTWFpbGZsb3d8eyJWIjo
> >>
> iMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C
> >> %7C%7C&sdata=tovO%2F6fnxAMSUu9hTFv1Kgarmo%2BwxKCxS%2FeJAbt3e0k%3
> D
> >> &reserved=0
> >>
> sc.yaml%23&data=05%7C01%7Cxu.yang_2%40nxp.com%7C24e82b830d9f47018
> >> ff408daaebcf83d%7C686ea1d3bc2b4c6
> >>
> fa92cd99c5c301635%7C0%7C0%7C638014423898086337%7CUnknown%7CTWFpbGZsb3
> >> d8eyJWIjoiMC4wLjAwMDAiLCJQIjoi
> >>
> V2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=gNwM
> >> bGsiuMS1zgvbgATYAY70gv2nIhX%2F
> >> 16IxiSYBf3s%3D&reserved=0
> >>> +$schema:
> >>>
> +https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fde
> >>>
> +vicetree.org%2Fmeta-&data=05%7C01%7Cjun.li%40nxp.com%7C15ee8a29
> >>>
> +acf04f95ff4108dab15b5b88%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0
> >>>
> +%7C638017303177794862%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiL
> >>>
> +CJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&s
> >>>
> +data=NxKdgHlJ9q%2F82XtXwWxHf5UFJR3v08L83jomQxg3Blo%3D&reserved=
> >>> +0
> >>
> schemas%2Fcore.yaml%23&data=05%7C01%7Cxu.yang_2%40nxp.com%7C24e82
> >> b830d9f47018ff408daaebcf83d%7C68
> >>
> 6ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C638014423898242035%7CUnknown
> >> %7CTWFpbGZsb3d8eyJWIjoiMC4wLjA
> >>
> wMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&a
> >> mp;sdata=jJUP5aKNkfkAefhNQL9almV
> >> Gqzn8cTNyjcRlZMOZwRk%3D&reserved=0
> >>> +
> >>> +title: Freescale i.MX non-core registers
> >>
> >> You sent v2 before we finished this topic. Is it correct? Even if TXT
> >> had such title, let's don't keep the wrong name.
> >>
> >> If it is non-core registers, why it is in USB? Why it is an usb-misc device?
> >
> > The chipidea's doc has a more clear explanation about core and
> > non-core registers as follow:
> >
> > "There are two kinds of registers in the USB module: USB core
> > registers and USB non-core registers. USB core registers are used to
> > control USB core functions, and more independent of USB features. Each
> > USB controller core has its own core registers. USB non-core registers
> > are additional to USB core registers, and more dependent on USB
> > features. i.MX series products vary in non-core registers."
> >
> > So we have named it like this.
>
> "Freescale i.MX non-core registers" implies this hardware is about i.MX
> registers. i.MX like for all SoCs.
>
> What you wrote now, about USB registers - quite different.
>
> However if you describe here registers, not some device, usually it's place
> is not USB...
>
> And actually all devices are bunch of registers, right? So everything should
> be called registers?
>
> Name is poor choice, so please find more appropriate one matching real purpose
> of this block.
How about "Freescale i.MX wrapper module for Chipidea USB2 controller"
Thanks
Li Jun
>
>
> Best regards,
> Krzysztof
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