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Date:   Wed, 28 Nov 2018 10:12:30 +0100
From:   Lothar =?UTF-8?B?V2HDn21hbm4=?= <LW@KARO-electronics.de>
To:     Anson Huang <anson.huang@nxp.com>
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Subject: Re: [PATCH 4/4] ARM64: dts: imx: add i.MX8QXP system controller RTC
 support
Message-ID: <20181128101230.435bfbeb@ipc1.ka-ro>
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Anson Huang <anson.huang@nxp.com> wrote:

> Hi, Lothar
> 
> Best Regards!
> Anson Huang
> 
> > -----Original Message-----
> > From: Lothar Waßmann [mailto:LW@KARO-electronics.de]
> > Sent: 2018年11月28日 17:04
> > To: Anson Huang <anson.huang@nxp.com>
> > Cc: a.zummo@towertech.it; alexandre.belloni@bootlin.com;
> > robh+dt@kernel.org; mark.rutland@arm.com; catalin.marinas@arm.com;
> > will.deacon@arm.com; Aisheng DONG <aisheng.dong@nxp.com>; Andy Gross
> > <andy.gross@linaro.org>; arnd@arndb.de; horms+renesas@verge.net.au;
> > heiko@sntech.de; bjorn.andersson@linaro.org; enric.balletbo@collabora.com;
> > amit.kucheria@linaro.org; ezequiel@collabora.com; olof@lixom.net;
> > shawnguo@kernel.org; linux-rtc@vger.kernel.org; devicetree@vger.kernel.org;
> > linux-kernel@vger.kernel.org; linux-arm-kernel@lists.infradead.org;
> > dl-linux-imx <linux-imx@nxp.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@nxp.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..
> 
What about existing users (if there are any), which would have a new
device appearing when updating the DTB?


Lothar Waßmann
-- 
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