Messages in this thread | | | From | Anson Huang <> | Subject | RE: [PATCH 4/4] ARM64: dts: imx: add i.MX8QXP system controller RTC support | Date | Wed, 28 Nov 2018 09:21:56 +0000 |
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Best Regards! Anson Huang
> -----Original Message----- > From: Alexandre Belloni [mailto:alexandre.belloni@bootlin.com] > Sent: 2018年11月28日 17:20 > To: Anson Huang <anson.huang@nxp.com> > Cc: Lothar Waßmann <LW@KARO-electronics.de>; a.zummo@towertech.it; > 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 > > On 28/11/2018 09:06:27+0000, Anson Huang wrote: > > > > 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.. > > > > I guess the point is that you may not want it enabled, even if it should always > be working. enabling it by default would affect the RTC ordering for example.
i.MX SoCs ONLY have 1 RTC. And RTC are always enabled by default for all i.MX SoCs, so do we have to disable it here and enable it in board dts?
Anson.
> > > -- > Alexandre Belloni, Bootlin > Embedded Linux and Kernel engineering > https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbootl > in.com&data=02%7C01%7Canson.huang%40nxp.com%7C0586fd10d6ff4 > 5d03f4308d65512a864%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0 > %7C636789935951215703&sdata=Hs1AXXoZMMKl8inOXFs8xXNXQ9EJG > gtphyTNhFvMiTE%3D&reserved=0
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