From:   Tommaso Merciai <tomm.merciai@gmail.com>
Cc:     tomm.merciai@gmail.com, Rob Herring <robh+dt@kernel.org>,
        Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Fabio Estevam <festevam@gmail.com>,
        NXP Linux Team <linux-imx@nxp.com>,
        Lucas Stach <l.stach@pengutronix.de>,
        Joakim Zhang <qiangqing.zhang@nxp.com>,
        Krzysztof Kozlowski <krzk@kernel.org>,
        Frieder Schrempf <frieder.schrempf@kontron.de>,
        Peng Fan <peng.fan@nxp.com>, Alice Guo <alice.guo@nxp.com>,
        Adam Ford <aford173@gmail.com>, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH] arm64: dts: imx8mm: Add NOC node
Date:   Wed,  3 Nov 2021 13:43:28 +0100
Message-Id: <20211103124329.171124-1-tomm.merciai@gmail.com>
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Add support for dynamic frequency scaling of the main NOC configuration
on imx8mm.

References:
 - i.MX 8M Mini Applications Processor RM, Rev. 3, 11/2020
 - f18e6d573b80 arm64: dts: imx8mq: Add NOC node
 - 912b9dacf3f0 arm64: dts: imx8mq: increase NOC clock to 800 MHz
---
 arch/arm64/boot/dts/freescale/imx8mm.dtsi | 25 +++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index c2f3f118f82e..c5f64abcecff 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -719,6 +719,31 @@ pgc_mipi: power-domain@11 {
 			};
 		};
 
+		noc: interconnect@32700000 {
+			compatible = "fsl,imx8mm-noc", "fsl,imx8m-noc";
+			reg = <0x32700000 0x100000>;
+			clocks = <&clk IMX8MM_CLK_NOC>;
+			fsl,ddrc = <&ddrc>;
+			#interconnect-cells = <1>;
+			operating-points-v2 = <&noc_opp_table>;
+
+			noc_opp_table: opp-table {
+				compatible = "operating-points-v2";
+
+				opp-133M {
+					opp-hz = /bits/ 64 <133333333>;
+				};
+
+				opp-400M {
+					opp-hz = /bits/ 64 <400000000>;
+				};
+
+				opp-800M {
+					opp-hz = /bits/ 64 <800000000>;
+				};
+			};
+		};
+
 		aips2: bus@30400000 {
 			compatible = "fsl,aips-bus", "simple-bus";
 			reg = <0x30400000 0x400000>;
-- 
2.25.1