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 - https://source.codeaurora.org/external/imx/linux-imx/tree/arch/ \ arm64/boot/dts/freescale/imx8mm.dtsi?h=lf-5.10.y Signed-off-by: Tommaso Merciai <tomm.merciai@xxxxxxxxx> --- Changes since v1: - Fix noc_opp_table frequencies taking NXP bsp as reference - Add reference link to nxp imx8mm dtsi on commit body Changes since v2: - Add missing signed-off line 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..1bcc5e361ca3 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-150M { + opp-hz = /bits/ 64 <150000000>; + }; + + opp-375M { + opp-hz = /bits/ 64 <375000000>; + }; + + opp-750M { + opp-hz = /bits/ 64 <750000000>; + }; + }; + }; + aips2: bus@30400000 { compatible = "fsl,aips-bus", "simple-bus"; reg = <0x30400000 0x400000>; -- 2.25.1
