[PATCH v4 4/5] arm: mvebu: Support for 98DX25xx/98DX35xx SoC

[Chris Packham <judge.packham@gmail.com>]

Add support for the Allecat5/Alleycat5X SoC. These are L3 switches with
an integrated CPU (referred to as the CnM block in Marvell's
documentation). These have dual ARMv8.2 CPUs (Cortex-A55). This support
has been ported from Marvell's SDK which is based on a much older
version of U-Boot.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
---

Changes in v4:
- Remove unused mvebu_get_nand_clock() (will return in a later series)
- Remove unnecessary #ifdefs
- Misc style cleanups
- Replace CONFIG_MVEBU_SAR with simpler code implemented directly in
  soc.c based around get_sar_freq which the 32-bit platforms already
  use.

Changes in v3:
- Remove unnecessary dma-ranges property from ethernet nodes (mvneta now
  correctly parses the property from the parent node).
- Keep soc_print_clock_info and soc_print_device_info local to
  alleycat5.

 arch/arm/dts/ac5-98dx25xx.dtsi         | 277 +++++++++++++++++++++++
 arch/arm/dts/ac5-98dx35xx.dtsi         |  17 ++
 arch/arm/mach-mvebu/Kconfig            |   4 +
 arch/arm/mach-mvebu/Makefile           |   1 +
 arch/arm/mach-mvebu/alleycat5/Makefile |   8 +
 arch/arm/mach-mvebu/alleycat5/cpu.c    | 124 ++++++++++
 arch/arm/mach-mvebu/alleycat5/soc.c    | 298 +++++++++++++++++++++++++
 arch/arm/mach-mvebu/alleycat5/soc.h    |   7 +
 arch/arm/mach-mvebu/arm64-common.c     |   5 +
 arch/arm/mach-mvebu/include/mach/cpu.h |   4 +
 10 files changed, 745 insertions(+)
 create mode 100644 arch/arm/dts/ac5-98dx25xx.dtsi
 create mode 100644 arch/arm/dts/ac5-98dx35xx.dtsi
 create mode 100644 arch/arm/mach-mvebu/alleycat5/Makefile
 create mode 100644 arch/arm/mach-mvebu/alleycat5/cpu.c
 create mode 100644 arch/arm/mach-mvebu/alleycat5/soc.c
 create mode 100644 arch/arm/mach-mvebu/alleycat5/soc.h

diff --git a/arch/arm/dts/ac5-98dx25xx.dtsi b/arch/arm/dts/ac5-98dx25xx.dtsi
new file mode 100644
index 0000000000..3c68355f32
--- /dev/null
+++ b/arch/arm/dts/ac5-98dx25xx.dtsi
@@ -0,0 +1,277 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Device Tree For AC5.
+ *
+ * Copyright (C) 2021 Marvell
+ * Copyright (C) 2022 Allied Telesis Labs
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	model = "Marvell AC5 SoC";
+	compatible = "marvell,ac5";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	cpus {
+		#address-cells = <2>;
+		#size-cells = <0>;
+
+		cpu-map {
+			cluster0 {
+				core0 {
+					cpu = <&cpu0>;
+				};
+				core1 {
+					cpu = <&cpu1>;
+				};
+			};
+		};
+
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a55";
+			reg = <0x0 0x0>;
+			enable-method = "psci";
+			next-level-cache = <&l2>;
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a55";
+			reg = <0x0 0x100>;
+			enable-method = "psci";
+			next-level-cache = <&l2>;
+		};
+
+		l2: l2-cache {
+			compatible = "cache";
+		};
+	};
+
+	psci {
+		compatible = "arm,psci-0.2";
+		method = "smc";
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_PPI 8 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_PPI 10 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
+	};
+
+	pmu {
+		compatible = "arm,armv8-pmuv3";
+		interrupts = <GIC_PPI 12 IRQ_TYPE_LEVEL_HIGH>;
+	};
+
+	soc {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+		dma-ranges;
+
+		internal-regs@7f000000 {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			compatible = "simple-bus";
+			/* 16M internal register @ 0x7f00_0000 */
+			ranges = <0x0 0x0 0x7f000000 0x1000000>;
+			dma-coherent;
+
+			uart0: serial@12000 {
+				compatible = "snps,dw-apb-uart";
+				reg = <0x12000 0x100>;
+				reg-shift = <2>;
+				interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
+				reg-io-width = <1>;
+				clocks = <&cnm_clock>;
+				status = "okay";
+			};
+
+			uart1: serial@12100 {
+				compatible = "snps,dw-apb-uart";
+				reg = <0x12100 0x100>;
+				reg-shift = <2>;
+				reg-io-width = <1>;
+				clocks = <&cnm_clock>;
+				status = "disabled";
+			};
+
+			uart2: serial@12200 {
+				compatible = "snps,dw-apb-uart";
+				reg = <0x12200 0x100>;
+				reg-shift = <2>;
+				reg-io-width = <1>;
+				clocks = <&cnm_clock>;
+				status = "disabled";
+			};
+
+			uart3: serial@12300 {
+				compatible = "snps,dw-apb-uart";
+				reg = <0x12300 0x100>;
+				reg-shift = <2>;
+				reg-io-width = <1>;
+				clocks = <&cnm_clock>;
+				status = "disabled";
+			};
+
+			mdio: mdio@22004 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				compatible = "marvell,orion-mdio";
+				reg = <0x22004 0x4>;
+				clocks = <&cnm_clock>;
+			};
+
+			i2c0: i2c@11000 {
+				compatible = "marvell,mv78230-i2c";
+				reg = <0x11000 0x20>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				clocks = <&cnm_clock>;
+				clock-names = "core";
+				interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>;
+				clock-frequency=<100000>;
+				status = "disabled";
+			};
+
+			i2c1: i2c@11100 {
+				compatible = "marvell,mv78230-i2c";
+				reg = <0x11100 0x20>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				clocks = <&cnm_clock>;
+				clock-names = "core";
+				interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>;
+				clock-frequency=<100000>;
+				status = "disabled";
+			};
+
+			gpio0: gpio@18100 {
+				compatible = "marvell,orion-gpio";
+				reg = <0x18100 0x40>;
+				ngpios = <32>;
+				gpio-controller;
+				#gpio-cells = <2>;
+				status = "okay";
+			};
+
+			gpio1: gpio@18140 {
+				reg = <0x18140 0x40>;
+				compatible = "marvell,orion-gpio";
+				ngpios = <14>;
+				gpio-controller;
+				#gpio-cells = <2>;
+				status = "okay";
+			};
+		};
+
+		/*
+		 * Dedicated section for devices behind 32bit controllers so we
+		 * can configure specific DMA mapping for them
+		 */
+		behind-32bit-controller@7f000000 {
+			compatible = "simple-bus";
+			#address-cells = <0x2>;
+			#size-cells = <0x2>;
+			ranges = <0x0 0x0 0x0 0x7f000000 0x0 0x1000000>;
+			/* Host phy ram starts at 0x200M */
+			dma-ranges = <0x0 0x0 0x2 0x0 0x1 0x0>;
+			dma-coherent;
+
+			eth0: ethernet@20000 {
+				compatible = "marvell,armada-ac5-neta";
+				reg = <0x0 0x20000 0x0 0x4000>;
+				interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&cnm_clock>;
+				phy-mode = "sgmii";
+				status = "disabled";
+			};
+
+			eth1: ethernet@24000 {
+				compatible = "marvell,armada-ac5-neta";
+				reg = <0x0 0x24000 0x0 0x4000>;
+				interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&cnm_clock>;
+				phy-mode = "sgmii";
+				status = "disabled";
+			};
+
+			usb0: usb@80000 {
+				compatible = "marvell,ac5-ehci";
+				reg = <0x0 0x80000 0x0 0x500>;
+				interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
+				status = "disabled";
+			};
+
+			usb1: usb@a0000 {
+				compatible = "marvell,ac5-ehci";
+				reg = <0x0 0xa0000 0x0 0x500>;
+				interrupts = <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;
+				status = "disabled";
+			};
+		};
+
+		pinctrl0: pinctrl@80020100 {
+			compatible = "marvell,mvebu-pinctrl";
+			reg = <0 0x80020100 0 0x20>;
+			pin-count = <46>;
+			max-func = <0xf>;
+			status = "okay";
+		};
+
+		spi0: spi@805a0000 {
+			compatible = "marvell,armada-3700-spi";
+			reg = <0x0 0x805a0000 0x0 0x50>;
+			#address-cells = <0x1>;
+			#size-cells = <0x0>;
+			clocks = <&spi_clock>;
+			interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
+			num-cs = <1>;
+			status = "disabled";
+		};
+
+		spi1: spi@805a8000 {
+			compatible = "marvell,armada-3700-spi";
+			reg = <0x0 0x805a8000 0x0 0x50>;
+			#address-cells = <0x1>;
+			#size-cells = <0x0>;
+			clocks = <&spi_clock>;
+			interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>;
+			num-cs = <1>;
+			status = "disabled";
+		};
+
+		gic: interrupt-controller@80600000 {
+			compatible = "arm,gic-v3";
+			#interrupt-cells = <3>;
+			interrupt-controller;
+			reg = <0x0 0x80600000 0x0 0x10000>, /* GICD */
+			      <0x0 0x80660000 0x0 0x40000>; /* GICR */
+			interrupts = <GIC_PPI 6 IRQ_TYPE_LEVEL_HIGH>;
+		};
+	};
+
+	clocks {
+		cnm_clock: cnm-clock {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <328000000>;
+		};
+
+		spi_clock: spi-clock {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <200000000>;
+		};
+	};
+};
diff --git a/arch/arm/dts/ac5-98dx35xx.dtsi b/arch/arm/dts/ac5-98dx35xx.dtsi
new file mode 100644
index 0000000000..2ab72f854b
--- /dev/null
+++ b/arch/arm/dts/ac5-98dx35xx.dtsi
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Device Tree For AC5X.
+ *
+ * Copyright (C) 2022 Allied Telesis Labs
+ */
+
+#include "ac5-98dx25xx.dtsi"
+
+/ {
+	model = "Marvell AC5X SoC";
+	compatible = "marvell,ac5x", "marvell,ac5";
+};
+
+&cnm_clock {
+	clock-frequency = <325000000>;
+};
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
index a81b8e2b0d..45efa24194 100644
--- a/arch/arm/mach-mvebu/Kconfig
+++ b/arch/arm/mach-mvebu/Kconfig
@@ -49,6 +49,10 @@ config ARMADA_8K
 	bool
 	select ARM64
 
+config ALLEYCAT_5
+	bool
+	select ARM64
+
 # Armada PLL frequency (used for NAND clock generation)
 config SYS_MVEBU_PLL_CLOCK
 	int
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index 103e64cf20..f7d7f5f8ef 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -6,6 +6,7 @@ ifdef CONFIG_ARM64
 
 obj-$(CONFIG_ARMADA_3700) += armada3700/
 obj-$(CONFIG_ARMADA_8K) += armada8k/
+obj-$(CONFIG_ALLEYCAT_5) += alleycat5/
 obj-y += arm64-common.o
 
 else # CONFIG_ARM64
diff --git a/arch/arm/mach-mvebu/alleycat5/Makefile b/arch/arm/mach-mvebu/alleycat5/Makefile
new file mode 100644
index 0000000000..b897ad089a
--- /dev/null
+++ b/arch/arm/mach-mvebu/alleycat5/Makefile
@@ -0,0 +1,8 @@
+#
+# Copyright (C) 2016 Stefan Roese <sr@denx.de>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y = cpu.o
+obj-y += soc.o
diff --git a/arch/arm/mach-mvebu/alleycat5/cpu.c b/arch/arm/mach-mvebu/alleycat5/cpu.c
new file mode 100644
index 0000000000..cc7f9794c5
--- /dev/null
+++ b/arch/arm/mach-mvebu/alleycat5/cpu.c
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <linux/libfdt.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/arch/cpu.h>
+#include <linux/sizes.h>
+#include <asm/armv8/mmu.h>
+#include "soc.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define RAM_SIZE	SZ_1G
+
+static struct mm_region ac5_mem_map[] = {
+	{
+		/* RAM */
+		.phys = CONFIG_SYS_SDRAM_BASE,
+		.virt = CONFIG_SYS_SDRAM_BASE,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	},
+	{
+		/* MMIO regions */
+		.phys = 0x00000000,
+		.virt = 0xa0000000,
+		.size = 0x100000,
+
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	},
+	{
+		/* MMIO regions */
+		.phys = 0x100000,
+		.virt = 0x100000,
+		.size = 0x3ff00000,
+
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	},
+	{
+		/* MMIO regions */
+		.phys = 0x7F000000,
+		.virt = 0x7F000000,
+		.size = 0x21000000,
+
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	},
+	{
+		0,
+	}
+};
+
+struct mm_region *mem_map = ac5_mem_map;
+
+void reset_cpu(void)
+{
+}
+
+int print_cpuinfo(void)
+{
+	soc_print_device_info();
+	soc_print_clock_info();
+
+	return 0;
+}
+
+int alleycat5_dram_init(void)
+{
+#define SCRATCH_PAD_REG		0x80010018
+	int ret;
+
+	/* override DDR_FW size if DTS is set with size */
+	ret = fdtdec_setup_mem_size_base();
+	if (ret == -EINVAL)
+		gd->ram_size = readl(SCRATCH_PAD_REG) * 4ULL;
+
+	/* if DRAM size == 0, print error message */
+	if (gd->ram_size == 0) {
+		pr_err("DRAM size not initialized - check DRAM configuration\n");
+		printf("\n Using temporary DRAM size of 512MB.\n\n");
+		gd->ram_size = SZ_512M;
+	}
+
+	ac5_mem_map[0].size = gd->ram_size;
+
+	return 0;
+}
+
+int alleycat5_dram_init_banksize(void)
+{
+	/*
+	 * Config single DRAM bank
+	 */
+	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+	gd->bd->bi_dram[0].size = gd->ram_size;
+
+	return 0;
+}
+
+int timer_init(void)
+{
+	return 0;
+}
+
+/*
+ * get_ref_clk
+ *
+ * return: reference clock in MHz
+ */
+u32 get_ref_clk(void)
+{
+	return 25;
+}
diff --git a/arch/arm/mach-mvebu/alleycat5/soc.c b/arch/arm/mach-mvebu/alleycat5/soc.c
new file mode 100644
index 0000000000..b84e4ac145
--- /dev/null
+++ b/arch/arm/mach-mvebu/alleycat5/soc.c
@@ -0,0 +1,298 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ */
+
+#include <common.h>
+#include <asm/arch-armada8k/cache_llc.h>
+#include <asm/io.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/soc.h>
+#include <dm/device.h>
+
+#define DEVICE_ID_REG			0x7F90004C
+#define DEVICE_ID_MASK			0xffff0
+#define REV_ID_MASK			0xf
+#define DEVICE_ID_OFFSET		4
+#define REV_ID_OFFSET			0
+
+#define DEVICE_SAR_REG			0x944F8204
+
+#define DEVICE_ID_SUB_REV		(MVEBU_REGISTER(0x2400230))
+#define DEVICE_ID_SUB_REV_OFFSET	7
+#define DEVICE_ID_SUB_REV_MASK		(0xffff << DEVICE_ID_SUB_REV_OFFSET)
+
+#define AC5X_DEV_ID			0x9800
+
+struct soc_info {
+	u32 dev_id;
+	u32 rev_id;
+	char *soc_name;
+};
+
+static struct soc_info soc_info_table[] = {
+	/* Two reserved entries for unidentified devices - don't change */
+	{ 0xB4FF, 0x0, "Unidentified Alleycat5"},
+	{ 0x98FF, 0x0, "Unidentified Alleycat5x"},
+
+	{ 0xB400, 0x2, "Alleycat5-plus  98DX2538-A2"},
+	{ 0xB401, 0x2, "Alleycat5-plus  98DX2535-A2"},
+	{ 0xB402, 0x2, "Alleycat5-plus  98DX2532-A2"},
+	{ 0xB403, 0x2, "Alleycat5-plus  98DX2531-A2"},
+	{ 0xB408, 0x2, "Alleycat5  98DX2528-A2"},
+	{ 0xB409, 0x2, "Alleycat5  98DX2525-A2"},
+	{ 0xB40A, 0x2, "Alleycat5  98DX2522-A2"},
+	{ 0xB40B, 0x2, "Alleycat5  98DX2521-A2"},
+	{ 0xB410, 0x2, "Alleycat5-lite  98DX2518-A2"},
+	{ 0xB411, 0x2, "Alleycat5-lite  98DX2515-A2"},
+	{ 0xB412, 0x2, "Alleycat5-lite  98DX2512-A2"},
+	{ 0xB413, 0x2, "Alleycat5-lite  98DX2511-A2"},
+
+	{ 0xB400, 0x1, "Alleycat5-plus  98DX2538-A1"},
+	{ 0xB401, 0x1, "Alleycat5-plus  98DX2535-A1"},
+	{ 0xB402, 0x1, "Alleycat5-plus  98DX2532-A1"},
+	{ 0xB403, 0x1, "Alleycat5-plus  98DX2531-A1"},
+	{ 0xB408, 0x1, "Alleycat5  98DX2528-A1"},
+	{ 0xB409, 0x1, "Alleycat5  98DX2525-A1"},
+	{ 0xB40A, 0x1, "Alleycat5  98DX2522-A1"},
+	{ 0xB40B, 0x1, "Alleycat5  98DX2521-A1"},
+	{ 0xB410, 0x1, "Alleycat5-lite  98DX2518-A1"},
+	{ 0xB411, 0x1, "Alleycat5-lite  98DX2515-A1"},
+	{ 0xB412, 0x1, "Alleycat5-lite  98DX2512-A1"},
+	{ 0xB413, 0x1, "Alleycat5-lite  98DX2511-A1"},
+	{ 0x9800, 0x1, "Alleycat5X 98DX3500M-A1"},
+	{ 0x9806, 0x1, "Alleycat5X 98DX3501M-A1"},
+	{ 0x9801, 0x1, "Alleycat5X 98DX3510M-A1"},
+	{ 0x9802, 0x1, "Alleycat5X 98DX3520M-A1"},
+	{ 0x9803, 0x1, "Alleycat5X 98DX3530M-A1"},
+	{ 0x9804, 0x1, "Alleycat5X 98DX3540M-A1"},
+	{ 0x9805, 0x1, "Alleycat5X 98DX3550M-A1"},
+	{ 0x9820, 0x1, "Alleycat5X 98DX3500-A1"},
+	{ 0x9826, 0x1, "Alleycat5X 98DX3501-A1"},
+	{ 0x9821, 0x1, "Alleycat5X 98DX3510-A1"},
+	{ 0x9861, 0x1, "Alleycat5X 98DX3510H-A1"},
+	{ 0x9841, 0x1, "Alleycat5X 98DX3510MH-A1"},
+	{ 0x9822, 0x1, "Alleycat5X 98DX3520-A1"},
+	{ 0x9823, 0x1, "Alleycat5X 98DX3530-A1"},
+	{ 0x9863, 0x1, "Alleycat5X 98DX3530H-A1"},
+	{ 0x9824, 0x1, "Alleycat5X 98DX3540-A1"},
+	{ 0x9825, 0x1, "Alleycat5X 98DX3550-A1"},
+
+	{ 0xB400, 0x0, "Alleycat5-plus  98DX2538-A0"},
+	{ 0xB401, 0x0, "Alleycat5-plus  98DX2535-A0"},
+	{ 0xB402, 0x0, "Alleycat5-plus  98DX2532-A0"},
+	{ 0xB403, 0x0, "Alleycat5-plus  98DX2531-A0"},
+	{ 0xB408, 0x0, "Alleycat5  98DX2528-A0"},
+	{ 0xB409, 0x0, "Alleycat5  98DX2525-A0"},
+	{ 0xB40A, 0x0, "Alleycat5  98DX2522-A0"},
+	{ 0xB40B, 0x0, "Alleycat5  98DX2521-A0"},
+	{ 0xB410, 0x0, "Alleycat5-lite  98DX2518-A0"},
+	{ 0xB411, 0x0, "Alleycat5-lite  98DX2515-A0"},
+	{ 0xB412, 0x0, "Alleycat5-lite  98DX2512-A0"},
+	{ 0xB413, 0x0, "Alleycat5-lite  98DX2511-A0"},
+	{ 0x9800, 0x0, "Alleycat5X 98DX3500M-A0"},
+	{ 0x9806, 0x0, "Alleycat5X 98DX3501M-A0"},
+	{ 0x9801, 0x0, "Alleycat5X 98DX3510M-A0"},
+	{ 0x9802, 0x0, "Alleycat5X 98DX3520M-A0"},
+	{ 0x9803, 0x0, "Alleycat5X 98DX3530M-A0"},
+	{ 0x9804, 0x0, "Alleycat5X 98DX3540M-A0"},
+	{ 0x9805, 0x0, "Alleycat5X 98DX3550M-A0"},
+	{ 0x9820, 0x0, "Alleycat5X 98DX3500-A0"},
+	{ 0x9826, 0x0, "Alleycat5X 98DX3501-A0"},
+	{ 0x9821, 0x0, "Alleycat5X 98DX3510-A0"},
+	{ 0x9861, 0x0, "Alleycat5X 98DX3510H-A0"},
+	{ 0x9841, 0x0, "Alleycat5X 98DX3510MH-A0"},
+	{ 0x9822, 0x0, "Alleycat5X 98DX3520-A0"},
+	{ 0x9823, 0x0, "Alleycat5X 98DX3530-A0"},
+	{ 0x9863, 0x0, "Alleycat5X 98DX3530H-A0"},
+	{ 0x9824, 0x0, "Alleycat5X 98DX3540-A0"},
+	{ 0x9825, 0x0, "Alleycat5X 98DX3550-A0"},
+};
+
+#define BIT_VAL(b)          ((1ULL << ((b) + 1)) - 1)
+#define BIT_RANGE(bl, bh)   (BIT_VAL(bh) - BIT_VAL((bl) - 1))
+
+#define PLL_MAX_CHOICE	4
+
+#define CPU_TYPE_AC5    0
+#define CPU_TYPE_AC5x   1
+#define CPU_TYPE_LAST   2
+
+enum mvebu_sar_opts {
+	SAR_CPU_FREQ = 0,
+	SAR_DDR_FREQ,
+	SAR_AP_FABRIC_FREQ,
+	SAR_CP_FABRIC_FREQ,
+	SAR_CP0_PCIE0_CLK,
+	SAR_CP0_PCIE1_CLK,
+	SAR_CP1_PCIE0_CLK,
+	SAR_CP1_PCIE1_CLK,
+	SAR_BOOT_SRC,
+	SAR_MAX_IDX
+};
+
+static const u32 pll_freq_tbl[CPU_TYPE_LAST][SAR_AP_FABRIC_FREQ + 1][PLL_MAX_CHOICE] = {
+	[CPU_TYPE_AC5] = {
+		[SAR_CPU_FREQ] = {
+			800, 1200, 1400, 1000
+		},
+		[SAR_DDR_FREQ] = {
+			1200, 800, 0, 0
+		},
+		[SAR_AP_FABRIC_FREQ] = {
+			396, 290, 197, 0
+		},
+	},
+	[CPU_TYPE_AC5x] = {
+		[SAR_CPU_FREQ] = {
+			800, 1200, 1500, 1600
+		},
+		[SAR_DDR_FREQ] = {
+			1200, 800, 0, 0
+		},
+		[SAR_AP_FABRIC_FREQ] = {
+			0, 0, 0, 0
+		}
+	}
+};
+
+static const u32 soc_sar_masks_tbl[CPU_TYPE_LAST][SAR_AP_FABRIC_FREQ + 1] = {
+	[CPU_TYPE_AC5] = {
+		[SAR_CPU_FREQ] = BIT_RANGE(18, 20),
+		[SAR_DDR_FREQ] = BIT_RANGE(16, 17),
+		[SAR_AP_FABRIC_FREQ] = BIT_RANGE(22, 23),
+	},
+	[CPU_TYPE_AC5x] = {
+		[SAR_CPU_FREQ] = BIT_RANGE(8, 10),
+		[SAR_DDR_FREQ] = BIT_RANGE(6, 7),
+		[SAR_AP_FABRIC_FREQ] = 1,
+	},
+};
+
+static int get_soc_type_rev(u32 *type, u32 *rev)
+{
+	*type = (readl(DEVICE_ID_REG) & DEVICE_ID_MASK) >> DEVICE_ID_OFFSET;
+	*rev =  (readl(DEVICE_ID_REG) & REV_ID_MASK)    >> REV_ID_OFFSET;
+
+	return 0;
+}
+
+static void get_one_sar_freq(int cpu_type, u32 sar_reg_val, enum mvebu_sar_opts sar_opt, u32 *freq)
+{
+	u32 mask;
+	unsigned char choice;
+
+	mask = soc_sar_masks_tbl[cpu_type][sar_opt];
+	choice = (sar_reg_val & mask) >> (__builtin_ffs(mask) - 1);
+	*freq = pll_freq_tbl[cpu_type][sar_opt][choice];
+}
+
+void get_sar_freq(struct sar_freq_modes *sar_freq)
+{
+	int cpu_type;
+	u32 soc_type, rev;
+	u32 sar_reg_val = readl(DEVICE_SAR_REG);
+
+	get_soc_type_rev(&soc_type, &rev);
+	cpu_type = (soc_type & 0xFF00) == AC5X_DEV_ID ? CPU_TYPE_AC5x : CPU_TYPE_AC5;
+
+	get_one_sar_freq(cpu_type, sar_reg_val, SAR_CPU_FREQ, &sar_freq->p_clk);
+	get_one_sar_freq(cpu_type, sar_reg_val, SAR_AP_FABRIC_FREQ, &sar_freq->nb_clk);
+	get_one_sar_freq(cpu_type, sar_reg_val, SAR_DDR_FREQ, &sar_freq->d_clk);
+}
+
+static int get_soc_table_index(u32 *index)
+{
+	u32 soc_type;
+	u32 rev, i, ret = 1;
+
+	*index = 0;
+	get_soc_type_rev(&soc_type, &rev);
+
+	for (i = 0; i < ARRAY_SIZE(soc_info_table) && ret != 0; i++) {
+		if (soc_type != soc_info_table[i].dev_id ||
+		    rev != soc_info_table[i].rev_id)
+			continue;
+
+		*index = i;
+		ret = 0;
+	}
+
+	if (ret && ((soc_type & 0xFF00) == AC5X_DEV_ID))
+		*index = 1;
+
+	return ret;
+}
+
+static int get_soc_name(char **soc_name)
+{
+	u32 index;
+
+	get_soc_table_index(&index);
+	*soc_name = soc_info_table[index].soc_name;
+
+	return 0;
+}
+
+/* Print device's SoC name and AP & CP information */
+void soc_print_device_info(void)
+{
+	char *soc_name = NULL;
+
+	get_soc_name(&soc_name);
+
+	printf("SoC: %s\n", soc_name);
+}
+
+void soc_print_clock_info(void)
+{
+	struct sar_freq_modes sar_freq;
+
+	get_sar_freq(&sar_freq);
+	printf("Clock:  CPU     %4d MHz\n", sar_freq.p_clk);
+	printf("\tDDR     %4d MHz\n", sar_freq.d_clk);
+	printf("\tFABRIC  %4d MHz\n", sar_freq.nb_clk);
+	printf("\tMSS     %4d MHz\n", 200);
+}
+
+/*
+ * Override of __weak int mach_cpu_init(void) :
+ * SoC/machine dependent CPU setup
+ */
+int mach_cpu_init(void)
+{
+	u32 phy_i;
+	u64 new_val, phy_base = 0x7F080800;
+
+	/* Init USB PHY */
+#define USB_STEPPING	0x20000
+#define WRITE_MASK(addr, mask, val)		\
+	{ new_val = (readl(addr) & (~(mask))) | val;\
+	writel(new_val, addr); }
+
+	for (phy_i = 0; phy_i < 2; phy_i++, phy_base += USB_STEPPING) {
+		WRITE_MASK(phy_base + 0x4,     0x3,	   0x2);
+		WRITE_MASK(phy_base + 0xC,     0x3000000,   0x2000000);
+		WRITE_MASK(phy_base + 0x1C,    0x3,         0x2);
+		WRITE_MASK(phy_base + 0x0,     0x1FF007F,   0x600005);
+		WRITE_MASK(phy_base + 0xC,     0x000F000,   0x0002000);
+		/* Calibration Threshold Setting = 4*/
+		WRITE_MASK(phy_base + 0x8,     0x700,	   0x400)
+		WRITE_MASK(phy_base + 0x14,    0x000000F,   0x000000a);
+		/* Change AMP to 4*/
+		WRITE_MASK(phy_base + 0xC,     0x3700000,   0x3400000);
+		WRITE_MASK(phy_base + 0x4,     0x3,	   0x3);
+		/* Impedance calibration triggering is performed by USB probe */
+	}
+
+	return 0;
+}
+
+int arch_misc_init(void)
+{
+	u32 type, rev;
+
+	get_soc_type_rev(&type, &rev);
+
+	return 0;
+}
diff --git a/arch/arm/mach-mvebu/alleycat5/soc.h b/arch/arm/mach-mvebu/alleycat5/soc.h
new file mode 100644
index 0000000000..97663d2c01
--- /dev/null
+++ b/arch/arm/mach-mvebu/alleycat5/soc.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef _ALLEYCAT5_SOC_H
+#define _ALLEYCAT5_SOC_H
+void soc_print_device_info(void);
+void soc_print_clock_info(void);
+#endif /* _ALLEYCAT5_SOC_H */
diff --git a/arch/arm/mach-mvebu/arm64-common.c b/arch/arm/mach-mvebu/arm64-common.c
index 238edbe6ba..7b8f7641b4 100644
--- a/arch/arm/mach-mvebu/arm64-common.c
+++ b/arch/arm/mach-mvebu/arm64-common.c
@@ -53,6 +53,8 @@ __weak int dram_init_banksize(void)
 		return a8k_dram_init_banksize();
 	else if (CONFIG_IS_ENABLED(ARMADA_3700))
 		return a3700_dram_init_banksize();
+	else if (CONFIG_IS_ENABLED(ALLEYCAT_5))
+		return alleycat5_dram_init_banksize();
 	else
 		return fdtdec_setup_memory_banksize();
 }
@@ -68,6 +70,9 @@ __weak int dram_init(void)
 	if (CONFIG_IS_ENABLED(ARMADA_3700))
 		return a3700_dram_init();
 
+	if (CONFIG_IS_ENABLED(ALLEYCAT_5))
+		return alleycat5_dram_init();
+
 	if (fdtdec_setup_mem_size_base() != 0)
 		return -EINVAL;
 
diff --git a/arch/arm/mach-mvebu/include/mach/cpu.h b/arch/arm/mach-mvebu/include/mach/cpu.h
index b127fce865..c17c2440f1 100644
--- a/arch/arm/mach-mvebu/include/mach/cpu.h
+++ b/arch/arm/mach-mvebu/include/mach/cpu.h
@@ -174,6 +174,10 @@ int a3700_dram_init_banksize(void);
 /* A3700 PCIe regions fixer for device tree */
 int a3700_fdt_fix_pcie_regions(void *blob);
 
+/* Alleycat5 dram functions */
+int alleycat5_dram_init(void);
+int alleycat5_dram_init_banksize(void);
+
 /*
  * get_ref_clk
  *
-- 
2.37.3