linux-kernel - RE: [PATCH 1/3] arm64: dts: imx8m: add mu node

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Date:   Wed, 20 May 2020 06:45:23 +0000
From:   Aisheng Dong <aisheng.dong@....com>
To:     Peng Fan <peng.fan@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        Fabio Estevam <fabio.estevam@....com>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "sboyd@...nel.org" <sboyd@...nel.org>
CC:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>,
        Leonard Crestez <leonard.crestez@....com>,
        Daniel Baluta <daniel.baluta@....com>,
        "l.stach@...gutronix.de" <l.stach@...gutronix.de>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>
Subject: RE: [PATCH 1/3] arm64: dts: imx8m: add mu node

> From: Peng Fan <peng.fan@....com>
> Sent: Wednesday, May 20, 2020 10:05 AM
> 
> Add mu node to let A53 could communicate with M Core.
> 
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mm.dtsi | 9 +++++++++
> arch/arm64/boot/dts/freescale/imx8mn.dtsi | 9 +++++++++
> arch/arm64/boot/dts/freescale/imx8mq.dtsi | 9 +++++++++
>  3 files changed, 27 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> index f3bbefe3e59f..9722f76d8c3f 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> @@ -771,6 +771,15 @@
>  				status = "disabled";
>  			};
> 
> +			mu: mailbox@...a0000 {
> +				compatible = "fsl,imx6sx-mu";

Usually we also add current SoC compatible string.
compatible = "fsl,imx8mm-mu", "fsl,imx6sx-mu"

> +				reg = <0x30aa0000 0x10000>;
> +				interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>;
> +				clocks = <&clk IMX8MM_CLK_MU_ROOT>;
> +				clock-names = "mu";

Undocumented property, drop it

> +				#mbox-cells = <2>;
> +			};
> +
>  			usdhc1: mmc@...40000 {
>  				compatible = "fsl,imx8mm-usdhc", "fsl,imx7d-usdhc";
>  				reg = <0x30b40000 0x10000>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
> b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
> index fb63a98fdff5..5f30f1d50460 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
> @@ -671,6 +671,15 @@
>  				status = "disabled";
>  			};
> 
> +			mu: mailbox@...a0000 {
> +				compatible = "fsl,imx6sx-mu";
> +				reg = <0x30aa0000 0x10000>;
> +				interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>;
> +				clocks = <&clk IMX8MN_CLK_MU_ROOT>;
> +				clock-names = "mu";
> +				#mbox-cells = <2>;
> +			};
> +
>  			usdhc1: mmc@...40000 {
>  				compatible = "fsl,imx8mn-usdhc", "fsl,imx7d-usdhc";
>  				reg = <0x30b40000 0x10000>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> index 1d15680a4962..e969fcbbd15f 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> @@ -956,6 +956,15 @@
>  				status = "disabled";
>  			};
> 
> +			mu: mailbox@...a0000 {
> +				compatible = "fsl,imx6sx-mu";
> +				reg = <0x30aa0000 0x10000>;
> +				interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>;
> +				clocks = <&clk IMX8MQ_CLK_MU_ROOT>;
> +				clock-names = "mu";
> +				#mbox-cells = <2>;
> +			};
> +
>  			usdhc1: mmc@...40000 {
>  				compatible = "fsl,imx8mq-usdhc",
>  				             "fsl,imx7d-usdhc";
> --
> 2.16.4