linux-kernel - RE: [EXT] Re: [PATCH V2 1/6] dt-bindings: usb: usbmisc-imx: convert to DT schema

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Message-ID: <PAXPR04MB87840FFD365C5C044D54B55F8C299@PAXPR04MB8784.eurprd04.prod.outlook.com>
Date:   Mon, 17 Oct 2022 03:17:22 +0000
From:   Xu Yang <xu.yang_2@....com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        "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>, 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

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
> > +---
> > +$id:
> https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevicetree.org%2Fschemas%2Fusb%2Ffsl%2Cusbmi
> sc.yaml%23&amp;data=05%7C01%7Cxu.yang_2%40nxp.com%7C24e82b830d9f47018ff408daaebcf83d%7C686ea1d3bc2b4c6
> fa92cd99c5c301635%7C0%7C0%7C638014423898086337%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoi
> V2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&amp;sdata=gNwMbGsiuMS1zgvbgATYAY70gv2nIhX%2F
> 16IxiSYBf3s%3D&amp;reserved=0
> > +$schema: https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevicetree.org%2Fmeta-
> schemas%2Fcore.yaml%23&amp;data=05%7C01%7Cxu.yang_2%40nxp.com%7C24e82b830d9f47018ff408daaebcf83d%7C68
> 6ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C638014423898242035%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjA
> wMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&amp;sdata=jJUP5aKNkfkAefhNQL9almV
> Gqzn8cTNyjcRlZMOZwRk%3D&amp;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. 

Thanks,
Xu Yang

> 
> > +
> > +maintainers:
> > +  - Xu Yang <xu.yang_2@....com>
> > +
> 
> Best regards,
> Krzysztof