linux-kernel - Re: [PATCH V4] arm64: dts: imx8mp: add NoC node

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Date:   Thu, 7 Jul 2022 11:43:38 +0300
From:   Georgi Djakov <djakov@...nel.org>
To:     "Peng Fan (OSS)" <peng.fan@....nxp.com>, shawnguo@...nel.org,
        s.hauer@...gutronix.de, festevam@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, abel.vesa@....com,
        abailon@...libre.com, l.stach@...gutronix.de,
        laurent.pinchart@...asonboard.com, marex@...x.de,
        paul.elder@...asonboard.com, Markus.Niebel@...tq-group.com,
        aford173@...il.com
Cc:     kernel@...gutronix.de, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-imx@....com,
        abelvesa@...nel.org, Peng Fan <peng.fan@....com>
Subject: Re: [PATCH V4] arm64: dts: imx8mp: add NoC node

On 7.07.22 2:47, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@....com>
> 
> Add i.MX8MP NoC node to make the interconnect i.MX8MP driver could work.
> Currently dynamic frequency scaling of the i.MX8MP NoC has not been
> supported, only NoC initial settings are configured by interconnect
> driver.
> 
> Signed-off-by: Peng Fan <peng.fan@....com>

Looks good to me.

Acked-by: Georgi Djakov <djakov@...nel.org>

> ---
> 
> V4:
>   Georgi has merged the V3 driver and bindings patches. So only resend
>   this patch. Per Georgi's comments:
>    - Drop syscon from compatbile
>    - Drop the header inclusion
> 
>   Seems I not see this patch in patchwork or mailist, maybe sent failed.
>   So gave a resend of V4.
> 
>   V3:
>    https://lore.kernel.org/linux-arm-kernel/20220703091132.1412063-1-peng.fan@oss.nxp.com/
> 
>   I not list the full change log, since this is only a minor patch
> 
>   arch/arm64/boot/dts/freescale/imx8mp.dtsi | 21 +++++++++++++++++++++
>   1 file changed, 21 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> index eb2d516278eb..42ed8ee08548 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> @@ -1019,6 +1019,27 @@ eqos: ethernet@...f0000 {
>   			};
>   		};
>   
> +		noc: interconnect@...00000 {
> +			compatible = "fsl,imx8mp-noc", "fsl,imx8m-noc";
> +			reg = <0x32700000 0x100000>;
> +			clocks = <&clk IMX8MP_CLK_NOC>;
> +			#interconnect-cells = <1>;
> +
> +			operating-points-v2 = <&noc_opp_table>;
> +
> +			noc_opp_table: opp-table {
> +				compatible = "operating-points-v2";
> +
> +				opp-200M {
> +					opp-hz = /bits/ 64 <200000000>;
> +				};
> +
> +				opp-1000M {
> +					opp-hz = /bits/ 64 <1000000000>;
> +				};
> +			};
> +		};
> +
>   		aips4: bus@...00000 {
>   			compatible = "fsl,aips-bus", "simple-bus";
>   			reg = <0x32c00000 0x400000>;