linux-kernel - RE: [PATCH 4/4] ARM64: dts: imx: add i.MX8QXP system controller RTC support

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Message-ID: <DB3PR0402MB3916FFD700313BF684CF32AAF5D10@DB3PR0402MB3916.eurprd04.prod.outlook.com>
Date:   Wed, 28 Nov 2018 09:06:27 +0000
From:   Anson Huang <anson.huang@....com>
To:     Lothar Waßmann <LW@...O-electronics.de>
CC:     "a.zummo@...ertech.it" <a.zummo@...ertech.it>,
        "alexandre.belloni@...tlin.com" <alexandre.belloni@...tlin.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "will.deacon@....com" <will.deacon@....com>,
        Aisheng DONG <aisheng.dong@....com>,
        Andy Gross <andy.gross@...aro.org>,
        "arnd@...db.de" <arnd@...db.de>,
        "horms+renesas@...ge.net.au" <horms+renesas@...ge.net.au>,
        "heiko@...ech.de" <heiko@...ech.de>,
        "bjorn.andersson@...aro.org" <bjorn.andersson@...aro.org>,
        "enric.balletbo@...labora.com" <enric.balletbo@...labora.com>,
        "amit.kucheria@...aro.org" <amit.kucheria@...aro.org>,
        "ezequiel@...labora.com" <ezequiel@...labora.com>,
        "olof@...om.net" <olof@...om.net>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "linux-rtc@...r.kernel.org" <linux-rtc@...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>,
        dl-linux-imx <linux-imx@....com>
Subject: RE: [PATCH 4/4] ARM64: dts: imx: add i.MX8QXP system controller RTC
 support

Hi, Lothar

Best Regards!
Anson Huang

> -----Original Message-----
> From: Lothar Waßmann [mailto:LW@...O-electronics.de]
> Sent: 2018年11月28日 17:04
> To: Anson Huang <anson.huang@....com>
> Cc: a.zummo@...ertech.it; alexandre.belloni@...tlin.com;
> robh+dt@...nel.org; mark.rutland@....com; catalin.marinas@....com;
> will.deacon@....com; Aisheng DONG <aisheng.dong@....com>; Andy Gross
> <andy.gross@...aro.org>; arnd@...db.de; horms+renesas@...ge.net.au;
> heiko@...ech.de; bjorn.andersson@...aro.org; enric.balletbo@...labora.com;
> amit.kucheria@...aro.org; ezequiel@...labora.com; olof@...om.net;
> shawnguo@...nel.org; linux-rtc@...r.kernel.org; devicetree@...r.kernel.org;
> linux-kernel@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> dl-linux-imx <linux-imx@....com>
> Subject: Re: [PATCH 4/4] ARM64: dts: imx: add i.MX8QXP system controller
> RTC support
> 
> Hi,
> 
> On Tue, 27 Nov 2018 09:41:46 +0000 Anson Huang wrote:
> > Add i.MX8QXP system controller RTC support.
> >
> > Signed-off-by: Anson Huang <Anson.Huang@....com>
> > ---
> >  arch/arm64/boot/dts/freescale/imx8qxp.dtsi | 4 ++++
> >  1 file changed, 4 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
> b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
> > index 9155d45..ef57db6 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
> > @@ -433,4 +433,8 @@
> >  		#size-cells = <1>;
> >  		ranges = <0x5f000000 0x0 0x5f000000 0x1000000>;
> >  	};
> > +
> > +	rtc: rtc {
> > +		compatible = "nxp,imx8qxp-sc-rtc";
> > +	};
> >  };
> IMO this should be disabled by default.

This module is NOT depending on any board design, should it be enabled by default in soc dtsi?
Like wdog etc..

Anson.

> 
> 
> Lothar Waßmann