arm64: dts: imx8qxp: orginize dts in subsystems

MX8 SoC is comprised of a few HW subsystems while some of them can be
reused in the different SoCs. So let's re-orginize them into subsystems
in device tree as well for the possible reuse of the common part.

Note, as there's still no devices of hsio subsys, so removed it
first instead of creating a subsys headfile with no devices.
They will be added back when new devices added.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/freescale/imx8-ss-ddr.dtsi b/arch/arm64/boot/dts/freescale/imx8-ss-ddr.dtsi
new file mode 100644
index 000000000000..8b5cad4e2700
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8-ss-ddr.dtsi
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019-2020 NXP
+ *	Dong Aisheng <aisheng.dong@nxp.com>
+ */
+
+ddr_subsys: bus@5c000000 {
+	compatible = "simple-bus";
+	#address-cells = <1>;
+	#size-cells = <1>;
+	ranges = <0x5c000000 0x0 0x5c000000 0x1000000>;
+
+	ddr-pmu@5c020000 {
+		compatible = "fsl,imx8-ddr-pmu";
+		reg = <0x5c020000 0x10000>;
+		interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>;
+	};
+};