arm64: dts: rockchip: Add DFI to rk3588s

The DFI unit can be used to measure DRAM utilization using perf. Add the
node to the device tree. The DFI needs a rockchip,pmu phandle to the pmu
containing registers for SDRAM configuration details. This is added in
this patch as well.
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.kernel.org/r/20231018061714.3553817-27-s.hauer@pengutronix.deSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3588s.dtsi

@@ -443,6 +443,11 @@ usb_host1_ohci: usb@fc8c0000 {
 		status = "disabled";
 	};
 
+	pmu1grf: syscon@fd58a000 {
+		compatible = "rockchip,rk3588-pmugrf", "syscon", "simple-mfd";
+		reg = <0x0 0xfd58a000 0x0 0x10000>;
+	};
+
 	sys_grf: syscon@fd58c000 {
 		compatible = "rockchip,rk3588-sys-grf", "syscon";
 		reg = <0x0 0xfd58c000 0x0 0x1000>;
@@ -1329,6 +1334,17 @@ pcie2x1l2_intc: legacy-interrupt-controller {
 		};
 	};
 
+	dfi: dfi@fe060000 {
+		reg = <0x00 0xfe060000 0x00 0x10000>;
+		compatible = "rockchip,rk3588-dfi";
+		interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH 0>,
+			     <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH 0>,
+			     <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH 0>,
+			     <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH 0>;
+		interrupt-names = "ch0", "ch1", "ch2", "ch3";
+		rockchip,pmu = <&pmu1grf>;
+	};
+
 	gmac1: ethernet@fe1c0000 {
 		compatible = "rockchip,rk3588-gmac", "snps,dwmac-4.20a";
 		reg = <0x0 0xfe1c0000 0x0 0x10000>;