From f18e6d573b80364bc6be71cd32d5eb92543a99c1 Mon Sep 17 00:00:00 2001 From: Leonard Crestez Date: Thu, 7 Jan 2021 13:17:50 +0100 Subject: [PATCH] arm64: dts: imx8mq: Add NOC node Add initial support for dynamic frequency scaling of the main NOC on imx8mq. 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 Signed-off-by: Martin Kepplinger Acked-by: Georgi Djakov Signed-off-by: Shawn Guo --- arch/arm64/boot/dts/freescale/imx8mq.dtsi | 24 +++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi index 9fcb001b8dde7..efabd7bb88cf3 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi @@ -1169,6 +1169,30 @@ }; }; + noc: interconnect@32700000 { + compatible = "fsl,imx8mq-noc", "fsl,imx8m-noc"; + reg = <0x32700000 0x100000>; + clocks = <&clk IMX8MQ_CLK_NOC>; + fsl,ddrc = <&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>; -- 2.30.2