diff mbox series

[v4,1/5] arm64: dts: imx8mq: Add NOC node

Message ID 20210107121754.3295-2-martin.kepplinger@puri.sm (mailing list archive)
State Not Applicable, archived
Headers show
Series imx8mq: updates for the interconnect fabric | expand

Commit Message

Martin Kepplinger Jan. 7, 2021, 12:17 p.m. UTC 
From: Leonard Crestez <leonard.crestez@nxp.com>

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 <leonard.crestez@nxp.com>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Acked-by: Georgi Djakov <georgi.djakov@linaro.org>
---
 arch/arm64/boot/dts/freescale/imx8mq.dtsi | 24 +++++++++++++++++++++++
 1 file changed, 24 insertions(+)

Comments

Shawn Guo Jan. 15, 2021, 10:47 a.m. UTC | #1 
On Thu, Jan 07, 2021 at 01:17:50PM +0100, Martin Kepplinger wrote:
> From: Leonard Crestez <leonard.crestez@nxp.com>
> 
> 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 <leonard.crestez@nxp.com>
> Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
> Acked-by: Georgi Djakov <georgi.djakov@linaro.org>

Applied, thanks.
diff mbox series

Patch

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>;