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From: Martin Kepplinger <martin.kepplinger@puri.sm>
To: robh@kernel.org, shawnguo@kernel.org, festevam@gmail.com,
	catalin.marinas@arm.com, will@kernel.org,
	georgi.djakov@linaro.org, cdleonard@gmail.com
Cc: devicetree@vger.kernel.org, kernel@puri.sm,
	linux-pm@vger.kernel.org,
	Martin Kepplinger <martin.kepplinger@puri.sm>,
	linux-kernel@vger.kernel.org, linux-imx@nxp.com,
	kernel@pengutronix.de, Leonard Crestez <leonard.crestez@nxp.com>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/6] arm64: dts: imx8m: Add NOC nodes
Date: Tue,  1 Dec 2020 11:01:19 +0100	[thread overview]
Message-ID: <20201201100124.4676-2-martin.kepplinger@puri.sm> (raw)
In-Reply-To: <20201201100124.4676-1-martin.kepplinger@puri.sm>

From: Leonard Crestez <leonard.crestez@nxp.com>

Add initial support for dynamic frequency scaling of main NOC.

Make DDRC the parent of the NOC (using passive governor) so that the
main NOC is automatically scaled together with DDRC by default.

Support for proactive scaling via interconnect will come on top.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Tested-by: Martin Kepplinger <martin.kepplinger@puri.sm> (imx8mq)
---
 arch/arm64/boot/dts/freescale/imx8mm.dtsi | 22 ++++++++++++++++++++++
 arch/arm64/boot/dts/freescale/imx8mn.dtsi | 22 ++++++++++++++++++++++
 arch/arm64/boot/dts/freescale/imx8mq.dtsi | 22 ++++++++++++++++++++++
 3 files changed, 66 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index c824f2615fe8..835b19f0ea42 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -921,6 +921,28 @@
 
 		};
 
+		noc: interconnect@32700000 {
+			compatible = "fsl,imx8mm-noc", "fsl,imx8m-noc";
+			reg = <0x32700000 0x100000>;
+			clocks = <&clk IMX8MM_CLK_NOC>;
+			devfreq = <&ddrc>;
+			operating-points-v2 = <&noc_opp_table>;
+
+			noc_opp_table: opp-table {
+				compatible = "operating-points-v2";
+
+				opp-150M {
+					opp-hz = /bits/ 64 <150000000>;
+				};
+				opp-375M {
+					opp-hz = /bits/ 64 <375000000>;
+				};
+				opp-750M {
+					opp-hz = /bits/ 64 <750000000>;
+				};
+			};
+		};
+
 		aips4: bus@32c00000 {
 			compatible = "fsl,aips-bus", "simple-bus";
 			reg = <0x32c00000 0x400000>;
diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index a06d2a6268e6..8e2d413f97d4 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -772,6 +772,28 @@
 
 		};
 
+		noc: interconnect@32700000 {
+			compatible = "fsl,imx8mn-noc", "fsl,imx8m-noc";
+			reg = <0x32700000 0x100000>;
+			clocks = <&clk IMX8MN_CLK_NOC>;
+			devfreq = <&ddrc>;
+			operating-points-v2 = <&noc_opp_table>;
+
+			noc_opp_table: opp-table {
+				compatible = "operating-points-v2";
+
+				opp-100M {
+					opp-hz = /bits/ 64 <100000000>;
+				};
+				opp-600M {
+					opp-hz = /bits/ 64 <600000000>;
+				};
+				opp-800M {
+					opp-hz = /bits/ 64 <800000000>;
+				};
+			};
+		};
+
 		aips4: bus@32c00000 {
 			compatible = "fsl,aips-bus", "simple-bus";
 			reg = <0x32c00000 0x400000>;
diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index a841a023e8e0..d139a46ee8ce 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
@@ -1158,6 +1158,28 @@
 			};
 		};
 
+		noc: interconnect@32700000 {
+			compatible = "fsl,imx8mq-noc", "fsl,imx8m-noc";
+			reg = <0x32700000 0x100000>;
+			clocks = <&clk IMX8MQ_CLK_NOC>;
+			devfreq = <&ddrc>;
+			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>;
+				};
+			};
+		};
+
 		bus@32c00000 { /* AIPS4 */
 			compatible = "fsl,aips-bus", "simple-bus";
 			reg = <0x32c00000 0x400000>;
-- 
2.20.1


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  reply	other threads:[~2020-12-01 10:11 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-01 10:01 [PATCH 0/6] imx8mq: updates for the interconnect fabric Martin Kepplinger
2020-12-01 10:01 ` Martin Kepplinger [this message]
2020-12-01 10:01 ` [PATCH 2/6] arm64: dts: imx8mq: Add interconnect provider property Martin Kepplinger
2020-12-01 10:01 ` [PATCH 3/6] arm64: dts: imx8mq: Add interconnect for lcdif Martin Kepplinger
2020-12-01 11:27   ` Lucas Stach
2020-12-01 10:01 ` [PATCH 4/6] interconnect: imx8mq: Use icc_sync_state Martin Kepplinger
2020-12-01 10:01 ` [PATCH 5/6] arm64: defconfig: Enable interconnect for imx8mq Martin Kepplinger
2020-12-01 11:29   ` Lucas Stach
2020-12-01 10:01 ` [PATCH 6/6] arm64: defconfig: updates for 5.10 Martin Kepplinger

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