From mboxrd@z Thu Jan  1 00:00:00 1970
From: Fabio Estevam <festevam@gmail.com>
Subject: Re: [PATCH V2 2/4] arm64: dts: imx8qxp: added ddr performance monitor
 nodes
Date: Tue, 12 Feb 2019 19:04:13 -0200
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References: <1550005119-25750-1-git-send-email-Frank.Li@nxp.com>
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To: Frank Li <frank.li@nxp.com>
Cc: "mark.rutland@arm.com" <mark.rutland@arm.com>, Aisheng Dong <aisheng.dong@nxp.com>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, "s.hauer@pengutronix.de" <s.hauer@pengutronix.de>, "will.deacon@arm.com" <will.deacon@arm.com>, "robh+dt@kernel.org" <robh+dt@kernel.org>, dl-linux-imx <linux-imx@nxp.com>, "kernel@pengutronix.de" <kernel@pengutronix.de>, "lznuaa@gmail.com" <lznuaa@gmail.com>, "shawnguo@kernel.org" <shawnguo@kernel.org>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>
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On Tue, Feb 12, 2019 at 6:59 PM Frank Li <frank.li@nxp.com> wrote:

> diff --git a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
> index 4c3dd95..243d7b3 100644
> --- a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi
> @@ -79,6 +79,13 @@
>                 interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
>         };
>
> +       ddr_pmu0: ddr_pmu@5c020000 {

It seems you ignored the commend I made in the previous version.

Here it goes again:

Underscores should not be used in node names. You could use
pmu@5c020000 instead.