arm64: dts: ti: Add support for AM642 SoC

The AM642 SoC belongs to the K3 Multicore SoC architecture platform,
providing advanced system integration to enable applications such as
Motor Drives, PLC, Remote IO and IoT Gateways.

Some highlights of this SoC are:
* Dual Cortex-A53s in a single cluster, two clusters of dual Cortex-R5F
  MCUs, and a single Cortex-M4F.
* Two Gigabit Industrial Communication Subsystems (ICSSG).
* Integrated Ethernet switch supporting up to a total of two external
  ports.
* PCIe-GEN2x1L, USB3/USB2, 2xCAN-FD, eMMC and SD, UFS, OSPI memory
  controller, QSPI, I2C, eCAP/eQEP, ePWM, ADC, among other
  peripherals.
* Centralized System Controller for Security, Power, and Resource
  Management (DMSC).

See AM64X Technical Reference Manual (SPRUIM2, Nov 2020)
for further details: https://www.ti.com/lit/pdf/spruim2

Introduce basic support for the AM642 SoC to enable ramdisk or MMC
boot. Introduce the sdhci, i2c, spi, and uart MAIN domain periperhals
under cbass_main and the i2c, spi, and uart MCU domain periperhals
under cbass_mcu.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Tested-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Link: https://lore.kernel.org/r/20210226144257.5470-4-d-gerlach@ti.com

arch/arm64/boot/dts/ti/k3-am64-main.dtsi

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for AM642 SoC Family Main Domain peripherals
+ *
+ * Copyright (C) 2020-2021 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+&cbass_main {
+	oc_sram: sram@70000000 {
+		compatible = "mmio-sram";
+		reg = <0x00 0x70000000 0x00 0x200000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x00 0x70000000 0x200000>;
+
+		atf-sram@0 {
+			reg = <0x0 0x1a000>;
+		};
+	};
+
+	gic500: interrupt-controller@1800000 {
+		compatible = "arm,gic-v3";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+		#interrupt-cells = <3>;
+		interrupt-controller;
+		reg = <0x00 0x01800000 0x00 0x10000>,	/* GICD */
+		      <0x00 0x01840000 0x00 0xC0000>;	/* GICR */
+		/*
+		 * vcpumntirq:
+		 * virtual CPU interface maintenance interrupt
+		 */
+		interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+
+		gic_its: msi-controller@1820000 {
+			compatible = "arm,gic-v3-its";
+			reg = <0x00 0x01820000 0x00 0x10000>;
+			socionext,synquacer-pre-its = <0x1000000 0x400000>;
+			msi-controller;
+			#msi-cells = <1>;
+		};
+	};
+
+	dmss: dmss {
+		compatible = "simple-mfd";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		dma-ranges;
+		ranges;
+
+		secure_proxy_main: mailbox@4d000000 {
+			compatible = "ti,am654-secure-proxy";
+			#mbox-cells = <1>;
+			reg-names = "target_data", "rt", "scfg";
+			reg = <0x00 0x4d000000 0x00 0x80000>,
+			      <0x00 0x4a600000 0x00 0x80000>,
+			      <0x00 0x4a400000 0x00 0x80000>;
+			interrupt-names = "rx_012";
+			interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
+		};
+	};
+
+	dmsc: dmsc@44043000 {
+		compatible = "ti,k2g-sci";
+		ti,host-id = <12>;
+		mbox-names = "rx", "tx";
+		mboxes= <&secure_proxy_main 12>,
+			<&secure_proxy_main 13>;
+		reg-names = "debug_messages";
+		reg = <0x00 0x44043000 0x00 0xfe0>;
+
+		k3_pds: power-controller {
+			compatible = "ti,sci-pm-domain";
+			#power-domain-cells = <2>;
+		};
+
+		k3_clks: clocks {
+			compatible = "ti,k2g-sci-clk";
+			#clock-cells = <2>;
+		};
+
+		k3_reset: reset-controller {
+			compatible = "ti,sci-reset";
+			#reset-cells = <2>;
+		};
+	};
+
+	main_pmx0: pinctrl@f4000 {
+		compatible = "pinctrl-single";
+		reg = <0x00 0xf4000 0x00 0x2d0>;
+		#pinctrl-cells = <1>;
+		pinctrl-single,register-width = <32>;
+		pinctrl-single,function-mask = <0xffffffff>;
+	};
+
+	main_conf: syscon@43000000 {
+		compatible = "syscon", "simple-mfd";
+		reg = <0x00 0x43000000 0x00 0x20000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x00 0x00 0x43000000 0x20000>;
+
+		chipid@14 {
+			compatible = "ti,am654-chipid";
+			reg = <0x00000014 0x4>;
+		};
+	};
+
+	main_uart0: serial@2800000 {
+		compatible = "ti,am64-uart", "ti,am654-uart";
+		reg = <0x00 0x02800000 0x00 0x100>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		interrupts = <GIC_SPI 178 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <48000000>;
+		current-speed = <115200>;
+		power-domains = <&k3_pds 146 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 146 0>;
+		clock-names = "fclk";
+	};
+
+	main_uart1: serial@2810000 {
+		compatible = "ti,am64-uart", "ti,am654-uart";
+		reg = <0x00 0x02810000 0x00 0x100>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		interrupts = <GIC_SPI 179 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <48000000>;
+		current-speed = <115200>;
+		power-domains = <&k3_pds 152 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 152 0>;
+		clock-names = "fclk";
+	};
+
+	main_uart2: serial@2820000 {
+		compatible = "ti,am64-uart", "ti,am654-uart";
+		reg = <0x00 0x02820000 0x00 0x100>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		interrupts = <GIC_SPI 180 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <48000000>;
+		current-speed = <115200>;
+		power-domains = <&k3_pds 153 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 153 0>;
+		clock-names = "fclk";
+	};
+
+	main_uart3: serial@2830000 {
+		compatible = "ti,am64-uart", "ti,am654-uart";
+		reg = <0x00 0x02830000 0x00 0x100>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		interrupts = <GIC_SPI 181 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <48000000>;
+		current-speed = <115200>;
+		power-domains = <&k3_pds 154 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 154 0>;
+		clock-names = "fclk";
+	};
+
+	main_uart4: serial@2840000 {
+		compatible = "ti,am64-uart", "ti,am654-uart";
+		reg = <0x00 0x02840000 0x00 0x100>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		interrupts = <GIC_SPI 182 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <48000000>;
+		current-speed = <115200>;
+		power-domains = <&k3_pds 155 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 155 0>;
+		clock-names = "fclk";
+	};
+
+	main_uart5: serial@2850000 {
+		compatible = "ti,am64-uart", "ti,am654-uart";
+		reg = <0x00 0x02850000 0x00 0x100>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		interrupts = <GIC_SPI 183 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <48000000>;
+		current-speed = <115200>;
+		power-domains = <&k3_pds 156 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 156 0>;
+		clock-names = "fclk";
+	};
+
+	main_uart6: serial@2860000 {
+		compatible = "ti,am64-uart", "ti,am654-uart";
+		reg = <0x00 0x02860000 0x00 0x100>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <48000000>;
+		current-speed = <115200>;
+		power-domains = <&k3_pds 158 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 158 0>;
+		clock-names = "fclk";
+	};
+
+	main_i2c0: i2c@20000000 {
+		compatible = "ti,am64-i2c", "ti,omap4-i2c";
+		reg = <0x00 0x20000000 0x00 0x100>;
+		interrupts = <GIC_SPI 161 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 102 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 102 2>;
+		clock-names = "fck";
+	};
+
+	main_i2c1: i2c@20010000 {
+		compatible = "ti,am64-i2c", "ti,omap4-i2c";
+		reg = <0x00 0x20010000 0x00 0x100>;
+		interrupts = <GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 103 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 103 2>;
+		clock-names = "fck";
+	};
+
+	main_i2c2: i2c@20020000 {
+		compatible = "ti,am64-i2c", "ti,omap4-i2c";
+		reg = <0x00 0x20020000 0x00 0x100>;
+		interrupts = <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 104 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 104 2>;
+		clock-names = "fck";
+	};
+
+	main_i2c3: i2c@20030000 {
+		compatible = "ti,am64-i2c", "ti,omap4-i2c";
+		reg = <0x00 0x20030000 0x00 0x100>;
+		interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 105 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 105 2>;
+		clock-names = "fck";
+	};
+
+	main_spi0: spi@20100000 {
+		compatible = "ti,am654-mcspi", "ti,omap4-mcspi";
+		reg = <0x00 0x20100000 0x00 0x400>;
+		interrupts = <GIC_SPI 172 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 141 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 141 0>;
+		dmas = <&main_pktdma 0xc300 0>, <&main_pktdma 0x4300 0>;
+		dma-names = "tx0", "rx0";
+	};
+
+	main_spi1: spi@20110000 {
+		compatible = "ti,am654-mcspi","ti,omap4-mcspi";
+		reg = <0x00 0x20110000 0x00 0x400>;
+		interrupts = <GIC_SPI 173 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 142 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 142 0>;
+	};
+
+	main_spi2: spi@20120000 {
+		compatible = "ti,am654-mcspi","ti,omap4-mcspi";
+		reg = <0x00 0x20120000 0x00 0x400>;
+		interrupts = <GIC_SPI 174 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 143 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 143 0>;
+	};
+
+	main_spi3: spi@20130000 {
+		compatible = "ti,am654-mcspi","ti,omap4-mcspi";
+		reg = <0x00 0x20130000 0x00 0x400>;
+		interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 144 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 144 0>;
+	};
+
+	main_spi4: spi@20140000 {
+		compatible = "ti,am654-mcspi","ti,omap4-mcspi";
+		reg = <0x00 0x20140000 0x00 0x400>;
+		interrupts = <GIC_SPI 175 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 145 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 145 0>;
+	};
+
+	sdhci0: mmc@fa10000 {
+		compatible = "ti,am64-sdhci-8bit";
+		reg = <0x00 0xfa10000 0x00 0x260>, <0x00 0xfa18000 0x00 0x134>;
+		interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
+		power-domains = <&k3_pds 57 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 57 0>, <&k3_clks 57 1>;
+		clock-names = "clk_ahb", "clk_xin";
+		mmc-ddr-1_8v;
+		mmc-hs200-1_8v;
+		mmc-hs400-1_8v;
+		ti,trm-icp = <0x2>;
+		ti,otap-del-sel-legacy = <0x0>;
+		ti,otap-del-sel-mmc-hs = <0x0>;
+		ti,otap-del-sel-ddr52 = <0x6>;
+		ti,otap-del-sel-hs200 = <0x7>;
+		ti,otap-del-sel-hs400 = <0x4>;
+	};
+
+	sdhci1: mmc@fa00000 {
+		compatible = "ti,am64-sdhci-4bit";
+		reg = <0x00 0xfa00000 0x00 0x260>, <0x00 0xfa08000 0x00 0x134>;
+		interrupts = <GIC_SPI 134 IRQ_TYPE_LEVEL_HIGH>;
+		power-domains = <&k3_pds 58 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 58 3>, <&k3_clks 58 4>;
+		clock-names = "clk_ahb", "clk_xin";
+		ti,trm-icp = <0x2>;
+		ti,otap-del-sel-legacy = <0x0>;
+		ti,otap-del-sel-sd-hs = <0xf>;
+		ti,otap-del-sel-sdr12 = <0xf>;
+		ti,otap-del-sel-sdr25 = <0xf>;
+		ti,otap-del-sel-sdr50 = <0xc>;
+		ti,otap-del-sel-sdr104 = <0x6>;
+		ti,otap-del-sel-ddr50 = <0x9>;
+		ti,clkbuf-sel = <0x7>;
+	};
+};

arch/arm64/boot/dts/ti/k3-am64-mcu.dtsi

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for AM64 SoC Family MCU Domain peripherals
+ *
+ * Copyright (C) 2020-2021 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+&cbass_mcu {
+	mcu_uart0: serial@4a00000 {
+		compatible = "ti,am64-uart", "ti,am654-uart";
+		reg = <0x00 0x04a00000 0x00 0x100>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		interrupts = <GIC_SPI 185 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <48000000>;
+		current-speed = <115200>;
+		power-domains = <&k3_pds 149 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 149 0>;
+		clock-names = "fclk";
+	};
+
+	mcu_uart1: serial@4a10000 {
+		compatible = "ti,am64-uart", "ti,am654-uart";
+		reg = <0x00 0x04a10000 0x00 0x100>;
+		reg-shift = <2>;
+		reg-io-width = <4>;
+		interrupts = <GIC_SPI 186 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <48000000>;
+		current-speed = <115200>;
+		power-domains = <&k3_pds 160 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 160 0>;
+		clock-names = "fclk";
+	};
+
+	mcu_i2c0: i2c@4900000 {
+		compatible = "ti,am64-i2c", "ti,omap4-i2c";
+		reg = <0x00 0x04900000 0x00 0x100>;
+		interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 106 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 106 2>;
+		clock-names = "fck";
+	};
+
+	mcu_i2c1: i2c@4910000 {
+		compatible = "ti,am64-i2c", "ti,omap4-i2c";
+		reg = <0x00 0x04910000 0x00 0x100>;
+		interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 107 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 107 2>;
+		clock-names = "fck";
+	};
+
+	mcu_spi0: spi@4b00000 {
+		compatible = "ti,am654-mcspi", "ti,omap4-mcspi";
+		reg = <0x00 0x04b00000 0x00 0x400>;
+		interrupts = <GIC_SPI 176 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 147 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 147 0>;
+	};
+
+	mcu_spi1: spi@4b10000 {
+		compatible = "ti,am654-mcspi","ti,omap4-mcspi";
+		reg = <0x00 0x04b10000 0x00 0x400>;
+		interrupts = <GIC_SPI 177 IRQ_TYPE_LEVEL_HIGH>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		power-domains = <&k3_pds 148 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 148 0>;
+	};
+};

arch/arm64/boot/dts/ti/k3-am64.dtsi

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for AM642 SoC Family
+ *
+ * Copyright (C) 2020-2021 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/pinctrl/k3.h>
+#include <dt-bindings/soc/ti,sci_pm_domain.h>
+
+/ {
+	model = "Texas Instruments K3 AM642 SoC";
+	compatible = "ti,am642";
+	interrupt-parent = <&gic500>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	aliases {
+		serial0 = &mcu_uart0;
+		serial1 = &mcu_uart1;
+		serial2 = &main_uart0;
+		serial3 = &main_uart1;
+		serial4 = &main_uart2;
+		serial5 = &main_uart3;
+		serial6 = &main_uart4;
+		serial7 = &main_uart5;
+		serial8 = &main_uart6;
+	};
+
+	chosen { };
+
+	firmware {
+		optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+		};
+
+		psci: psci {
+			compatible = "arm,psci-1.0";
+			method = "smc";
+		};
+	};
+
+	a53_timer0: timer-cl0-cpu0 {
+		compatible = "arm,armv8-timer";
+		interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>, /* cntpsirq */
+			     <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>, /* cntpnsirq */
+			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>, /* cntvirq */
+			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>; /* cnthpirq */
+	};
+
+	pmu: pmu {
+		compatible = "arm,cortex-a53-pmu";
+		interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
+	};
+
+	cbass_main: bus@f4000 {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges = <0x00 0x000f4000 0x00 0x000f4000 0x00 0x000002d0>, /* PINCTRL */
+			 <0x00 0x00600000 0x00 0x00600000 0x00 0x00001100>, /* GPIO */
+			 <0x00 0x00a40000 0x00 0x00a40000 0x00 0x00000800>, /* Timesync router */
+			 <0x00 0x01000000 0x00 0x01000000 0x00 0x02330400>, /* First peripheral window */
+			 <0x00 0x08000000 0x00 0x08000000 0x00 0x00200000>, /* Main CPSW */
+			 <0x00 0x0d000000 0x00 0x0d000000 0x00 0x00800000>, /* PCIE_CORE */
+			 <0x00 0x0f000000 0x00 0x0f000000 0x00 0x00c44200>, /* Second peripheral window */
+			 <0x00 0x20000000 0x00 0x20000000 0x00 0x0a008000>, /* Third peripheral window */
+			 <0x00 0x30000000 0x00 0x30000000 0x00 0x000bc100>, /* ICSSG0/1 */
+			 <0x00 0x37000000 0x00 0x37000000 0x00 0x00040000>, /* TIMERMGR0 TIMERS */
+			 <0x00 0x39000000 0x00 0x39000000 0x00 0x00000400>, /* CPTS0 */
+			 <0x00 0x3b000000 0x00 0x3b000000 0x00 0x00000400>, /* GPMC0_CFG */
+			 <0x00 0x3cd00000 0x00 0x3cd00000 0x00 0x00000200>, /* TIMERMGR0_CONFIG */
+			 <0x00 0x3f004000 0x00 0x3f004000 0x00 0x00000400>, /* GICSS0_REGS */
+			 <0x00 0x43000000 0x00 0x43000000 0x00 0x00020000>, /* CTRL_MMR0 */
+			 <0x00 0x44043000 0x00 0x44043000 0x00 0x00000fe0>, /* TI SCI DEBUG */
+			 <0x00 0x48000000 0x00 0x48000000 0x00 0x06400000>, /* DMASS */
+			 <0x00 0x50000000 0x00 0x50000000 0x00 0x08000000>, /* GPMC0 DATA */
+			 <0x00 0x60000000 0x00 0x60000000 0x00 0x08000000>, /* FSS0 DAT1 */
+			 <0x00 0x68000000 0x00 0x68000000 0x00 0x08000000>, /* PCIe DAT0 */
+			 <0x00 0x70000000 0x00 0x70000000 0x00 0x00200000>, /* OC SRAM */
+			 <0x00 0x78000000 0x00 0x78000000 0x00 0x00800000>, /* Main R5FSS */
+			 <0x06 0x00000000 0x06 0x00000000 0x01 0x00000000>, /* PCIe DAT1 */
+			 <0x05 0x00000000 0x05 0x00000000 0x01 0x00000000>, /* FSS0 DAT3 */
+
+			 /* MCU Domain Range */
+			 <0x00 0x04000000 0x00 0x04000000 0x00 0x01ff1400>;
+
+		cbass_mcu: bus@4000000 {
+			compatible = "simple-bus";
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges = <0x00 0x04000000 0x00 0x04000000 0x00 0x01ff1400>; /* Peripheral window */
+		};
+	};
+};
+
+/* Now include the peripherals for each bus segments */
+#include "k3-am64-main.dtsi"
+#include "k3-am64-mcu.dtsi"

arch/arm64/boot/dts/ti/k3-am642.dtsi

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for AM642 SoC family in Dual core configuration
+ *
+ * Copyright (C) 2020-2021 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+
+#include "k3-am64.dtsi"
+
+/ {
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu-map {
+			cluster0: cluster0 {
+				core0 {
+					cpu = <&cpu0>;
+				};
+
+				core1 {
+					cpu = <&cpu1>;
+				};
+			};
+		};
+
+		cpu0: cpu@0 {
+			compatible = "arm,cortex-a53";
+			reg = <0x000>;
+			device_type = "cpu";
+			enable-method = "psci";
+			i-cache-size = <0x8000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <128>;
+			next-level-cache = <&L2_0>;
+		};
+
+		cpu1: cpu@1 {
+			compatible = "arm,cortex-a53";
+			reg = <0x001>;
+			device_type = "cpu";
+			enable-method = "psci";
+			i-cache-size = <0x8000>;
+			i-cache-line-size = <64>;
+			i-cache-sets = <256>;
+			d-cache-size = <0x8000>;
+			d-cache-line-size = <64>;
+			d-cache-sets = <128>;
+			next-level-cache = <&L2_0>;
+		};
+	};
+
+	L2_0: l2-cache0 {
+		compatible = "cache";
+		cache-level = <2>;
+		cache-size = <0x40000>;
+		cache-line-size = <64>;
+		cache-sets = <512>;
+	};
+};