[PATCH v4 1/5] arm64: dts: imx8mq: Add NOC node
From: Martin Kepplinger <hidden>
Date: 2021-01-07 12:19:24
Also in:
linux-arm-kernel, linux-pm, lkml
Subsystem:
arm/freescale imx / mxc / layerscape arm architecture, the rest · Maintainers:
Frank Li, Sascha Hauer, Linus Torvalds
From: Leonard Crestez <redacted> 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 <redacted> Signed-off-by: Martin Kepplinger <redacted> Acked-by: Georgi Djakov <redacted> --- 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 a841a023e8e0..dbe480a76aa1 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi@@ -1158,6 +1158,30 @@ }; }; + 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>;
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2.20.1