linux-kernel - RE: [EXT] Re: [PATCH 2/2] arm64: dts: fsl: ls1046a: Add the guts node in dts

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Date:   Wed, 8 May 2019 11:38:27 +0000
From:   Chuanhua Han <chuanhua.han@....com>
To:     Sascha Hauer <s.hauer@...gutronix.de>
CC:     "shawnguo@...nel.org" <shawnguo@...nel.org>,
        Leo Li <leoyang.li@....com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "festevam@...il.com" <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        "wsa+renesas@...g-engineering.com" <wsa+renesas@...g-engineering.com>,
        "u.kleine-koenig@...gutronix.de" <u.kleine-koenig@...gutronix.de>,
        "eha@...f.com" <eha@...f.com>,
        "linux@...pel-privat.de" <linux@...pel-privat.de>,
        "l.stach@...gutronix.de" <l.stach@...gutronix.de>,
        "peda@...ntia.se" <peda@...ntia.se>,
        Sumit Batra <sumit.batra@....com>
Subject: RE: [EXT] Re: [PATCH 2/2] arm64: dts: fsl: ls1046a: Add the guts node
 in dts



> -----Original Message-----
> From: Sascha Hauer <s.hauer@...gutronix.de>
> Sent: 2019年5月6日 15:41
> To: Chuanhua Han <chuanhua.han@....com>
> Cc: shawnguo@...nel.org; Leo Li <leoyang.li@....com>; robh+dt@...nel.org;
> mark.rutland@....com; linux-kernel@...r.kernel.org;
> linux-i2c@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> devicetree@...r.kernel.org; festevam@...il.com; dl-linux-imx
> <linux-imx@....com>; wsa+renesas@...g-engineering.com;
> u.kleine-koenig@...gutronix.de; eha@...f.com; linux@...pel-privat.de;
> l.stach@...gutronix.de; peda@...ntia.se; Sumit Batra
> <sumit.batra@....com>
> Subject: [EXT] Re: [PATCH 2/2] arm64: dts: fsl: ls1046a: Add the guts node in
> dts
> 
> Caution: EXT Email
> 
> On Tue, Apr 30, 2019 at 12:47:19PM +0800, Chuanhua Han wrote:
> > For NXP ls1046a SoC, the i2c clock needs to be configured with the
> > appropriate bit of RCW, so we add the guts node (GUTS/DCFG global
> > utilities block) for the driver to read.
> >
> > Signed-off-by: Sumit Batra <sumit.batra@....com>
> > Signed-off-by: Chuanhua Han <chuanhua.han@....com>
> > ---
> >  arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi | 5 +++++
> >  1 file changed, 5 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> > b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> > index 373310e4c0ea..f88599df18bb 100644
> > --- a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi
> > @@ -205,6 +205,11 @@
> >                       status = "disabled";
> >               };
> >
> > +             guts: global-utilities@...0000 {
> > +                     compatible = "fsl,qoriq-device-config";
> > +                     reg = <0x0 0x1ee0000 0x0 0x1000>;
> > +             };
> 
> According to Documentation/devicetree/bindings/soc/fsl/guts.txt we have the
> following compatibles:
> 
>         "fsl,qoriq-device-config-1.0"
>         "fsl,qoriq-device-config-2.0"
>         "fsl,<chip>-device-config"
>         "fsl,<chip>-guts"
> 
> "fsl,qoriq-device-config" is none of them and I don't think you should give this
> SoC specific thing a generic compatible.
> "fsl,ls1046a-device-config" would be better.
> 
Yes, you should be right
> Sascha
> 
> 
> --
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