riscv: dts: microchip: add the mpfs' fabric clock control

The "fabric clocks" in current PolarFire SoC device trees are not
really fixed clocks. Their frequency is set by the bitstream, so having
them located in -fabric.dtsi is not a problem - they're just as "fixed"
as the IP blocks etc used in the FPGA fabric.
However, their configuration can be read at runtime (and to an extent
they can be controlled, although the intended usage is static
configurations set by the bitstream) through the system controller bus.

In the v2022.09 icicle kit reference design a single CCC (north-west
corner) is enabled, using a 50 MHz off-chip oscillator as its reference.

Updating to the v2022.09 icicle kit reference design is required, as
prior to this release, the CCC was not fixed & could change for any
given run of the synthesis tool.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/arch/riscv/boot/dts/microchip/mpfs.dtsi b/arch/riscv/boot/dts/microchip/mpfs.dtsi
index 8f463399a568..0a9bb84af438 100644
--- a/arch/riscv/boot/dts/microchip/mpfs.dtsi
+++ b/arch/riscv/boot/dts/microchip/mpfs.dtsi
@@ -236,6 +236,38 @@
 			#clock-cells = <1>;
 		};
 
+		ccc_se: clock-controller@38010000 {
+			compatible = "microchip,mpfs-ccc";
+			reg = <0x0 0x38010000 0x0 0x1000>, <0x0 0x38020000 0x0 0x1000>,
+			      <0x0 0x39010000 0x0 0x1000>, <0x0 0x39020000 0x0 0x1000>;
+			#clock-cells = <1>;
+			status = "disabled";
+		};
+
+		ccc_ne: clock-controller@38040000 {
+			compatible = "microchip,mpfs-ccc";
+			reg = <0x0 0x38040000 0x0 0x1000>, <0x0 0x38080000 0x0 0x1000>,
+			      <0x0 0x39040000 0x0 0x1000>, <0x0 0x39080000 0x0 0x1000>;
+			#clock-cells = <1>;
+			status = "disabled";
+		};
+
+		ccc_nw: clock-controller@38100000 {
+			compatible = "microchip,mpfs-ccc";
+			reg = <0x0 0x38100000 0x0 0x1000>, <0x0 0x38200000 0x0 0x1000>,
+			      <0x0 0x39100000 0x0 0x1000>, <0x0 0x39200000 0x0 0x1000>;
+			#clock-cells = <1>;
+			status = "disabled";
+		};
+
+		ccc_sw: clock-controller@38400000 {
+			compatible = "microchip,mpfs-ccc";
+			reg = <0x0 0x38400000 0x0 0x1000>, <0x0 0x38800000 0x0 0x1000>,
+			      <0x0 0x39400000 0x0 0x1000>, <0x0 0x39800000 0x0 0x1000>;
+			#clock-cells = <1>;
+			status = "disabled";
+		};
+
 		mmuart0: serial@20000000 {
 			compatible = "ns16550a";
 			reg = <0x0 0x20000000 0x0 0x400>;