ARM: remove zte zx platform

The ZTE ZX set-top-box SoC platform was added in 2015 by Jun Nie, with
Baoyou Xie and Shawn Guo subsequently becoming maintainers after the
addition of the 64-bit variant.

However, the only machines that were ever supported upstream are the
reference designs, not actual set-top-box devices that would benefit
from this support. All ZTE set-top-boxes from the past few years seem
to be based on third-party SoCs. While there is very little information
about zx296702 and zx296718 on the web, I found some references to other
chips from the same family, such as zx296716 and zx296719, which were
never submitted for upstream support. Finally, there is no support for
the GPU on either of them, with the lima and panfrost device drivers
having been added after work on the zx platform had stopped.

Shawn confirmed that he has not seen any interest in this platform for
the past four years, and that it can be removed.

Thanks to Jun and Shawn for maintaining this platform over the past
five years.

Cc: Jun Nie <jun.nie@linaro.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

14 files changed, 0 insertions, 810 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 9d9a7060d365..9f605ab54570 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -718,8 +718,6 @@ source "arch/arm/mach-vexpress/Kconfig"
 
 source "arch/arm/mach-vt8500/Kconfig"
 
-source "arch/arm/mach-zx/Kconfig"
-
 source "arch/arm/mach-zynq/Kconfig"
 
 # ARMv7-M architecture
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index fe8b95069d31..543e29068c08 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1353,18 +1353,6 @@ choice
 		  This option selects UART0 on VIA/Wondermedia System-on-a-chip
 		  devices, including VT8500, WM8505, WM8650 and WM8850.
 
-	config DEBUG_ZTE_ZX
-		bool "Use ZTE ZX UART"
-		select DEBUG_UART_PL01X
-		depends on ARCH_ZX
-		help
-		  Say Y here if you are enabling ZTE ZX296702 SOC and need
-		  debug uart support.
-
-		  This option is preferred over the platform specific
-		  options; the platform specific options are deprecated
-		  and will be soon removed.
-
 	config DEBUG_ZYNQ_UART0
 		bool "Kernel low-level debugging on Xilinx Zynq using UART0"
 		depends on ARCH_ZYNQ
@@ -1599,7 +1587,6 @@ config DEBUG_UART_PHYS
 	default 0x02531000 if DEBUG_KEYSTONE_UART1
 	default 0x03010fe0 if ARCH_RPC
 	default 0x07000000 if DEBUG_SUN9I_UART0
-	default 0x09405000 if DEBUG_ZTE_ZX
 	default 0x10009000 if DEBUG_REALVIEW_STD_PORT || \
 				DEBUG_VEXPRESS_UART0_CA9
 	default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT
@@ -1782,7 +1769,6 @@ config DEBUG_UART_VIRT
 	default 0xfb020000 if DEBUG_OMAP3UART3
 	default 0xfb042000 if DEBUG_OMAP3UART4
 	default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT
-	default 0xfc705000 if DEBUG_ZTE_ZX
 	default 0xfcfe8600 if DEBUG_BCM63XX_UART
 	default 0xfd000000 if DEBUG_SPEAR3XX || DEBUG_SPEAR13XX
 	default 0xfd883000 if DEBUG_ALPINE_UART0
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 7c4b50852a78..7b8eed93f1fa 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -220,7 +220,6 @@ machine-$(CONFIG_ARCH_U8500)		+= ux500
 machine-$(CONFIG_ARCH_VERSATILE)	+= versatile
 machine-$(CONFIG_ARCH_VEXPRESS)		+= vexpress
 machine-$(CONFIG_ARCH_VT8500)		+= vt8500
-machine-$(CONFIG_ARCH_ZX)		+= zx
 machine-$(CONFIG_ARCH_ZYNQ)		+= zynq
 machine-$(CONFIG_PLAT_SPEAR)		+= spear
 
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index da413b4d5c3f..5fcae846aa00 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1387,7 +1387,6 @@ dtb-$(CONFIG_ARCH_MSTARV7) += \
 	mstar-infinity2m-ssd202d-ssd201htv2.dtb \
 	mstar-infinity3-msc313e-breadbee.dtb \
 	mstar-mercury5-ssc8336n-midrived08.dtb
-dtb-$(CONFIG_ARCH_ZX) += zx296702-ad1.dtb
 dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-ast2500-evb.dtb \
 	aspeed-ast2600-evb.dtb \
diff --git a/arch/arm/boot/dts/zx296702-ad1.dts b/arch/arm/boot/dts/zx296702-ad1.dts
deleted file mode 100644
index bd9400840023..000000000000
--- a/arch/arm/boot/dts/zx296702-ad1.dts
+++ /dev/null
@@ -1,48 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-/dts-v1/;
-
-#include "zx296702.dtsi"
-
-/ {
-	model = "ZTE ZX296702 AD1 Board";
-	compatible = "zte,zx296702-ad1", "zte,zx296702";
-
-	aliases {
-		serial0 = &uart0;
-		serial1 = &uart1;
-	};
-
-	memory {
-		device_type = "memory";
-		reg = <0x50000000 0x20000000>;
-	};
-};
-
-&mmc0 {
-	supports-highspeed;
-	non-removable;
-	disable-wp;
-	status = "okay";
-
-	slot@0 {
-		reg = <0>;
-		bus-width = <4>;
-	};
-};
-
-&mmc1 {
-	supports-highspeed;
-	non-removable;
-	disable-wp;
-	status = "okay";
-
-	slot@0 {
-		reg = <0>;
-		bus-width = <8>;
-	};
-};
-
-&uart0 {
-	status = "okay";
-};
diff --git a/arch/arm/boot/dts/zx296702.dtsi b/arch/arm/boot/dts/zx296702.dtsi
deleted file mode 100644
index f378c661b3bf..000000000000
--- a/arch/arm/boot/dts/zx296702.dtsi
+++ /dev/null
@@ -1,142 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include <dt-bindings/clock/zx296702-clock.h>
-#include <dt-bindings/interrupt-controller/arm-gic.h>
-
-/ {
-	#address-cells = <1>;
-	#size-cells = <1>;
-
-	cpus {
-		#address-cells = <1>;
-		#size-cells = <0>;
-		enable-method = "zte,zx296702-smp";
-
-		cpu@0 {
-			compatible = "arm,cortex-a9";
-			device_type = "cpu";
-			next-level-cache = <&l2cc>;
-			reg = <0>;
-		};
-
-		cpu@1 {
-			compatible = "arm,cortex-a9";
-			device_type = "cpu";
-			next-level-cache = <&l2cc>;
-			reg = <1>;
-		};
-	};
-
-
-	soc {
-		#address-cells = <1>;
-		#size-cells = <1>;
-		compatible = "simple-bus";
-		interrupt-parent = <&intc>;
-		ranges;
-
-		matrix: bus-matrix@400000 {
-			compatible = "zte,zx-bus-matrix";
-			reg = <0x00400000 0x1000>;
-		};
-
-		intc: interrupt-controller@801000 {
-			compatible = "arm,cortex-a9-gic";
-			#interrupt-cells = <3>;
-			#address-cells = <1>;
-			#size-cells = <1>;
-			interrupt-controller;
-			reg = <0x00801000 0x1000>,
-			      <0x00800100 0x100>;
-		};
-
-		global_timer: timer@8000200 {
-			compatible = "arm,cortex-a9-global-timer";
-			reg = <0x00800200 0x20>;
-			interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
-			interrupt-parent = <&intc>;
-			clocks = <&topclk ZX296702_A9_PERIPHCLK>;
-		};
-
-		l2cc: cache-controller@c00000 {
-			compatible = "arm,pl310-cache";
-			reg = <0x00c00000 0x1000>;
-			cache-unified;
-			cache-level = <2>;
-			arm,data-latency = <1 1 1>;
-			arm,tag-latency = <1 1 1>;
-			arm,double-linefill = <1>;
-			arm,double-linefill-incr = <0>;
-		};
-
-		pcu: pcu@a0008000 {
-			compatible = "zte,zx296702-pcu";
-			reg = <0xa0008000 0x1000>;
-		};
-
-		topclk: topclk@9800000 {
-			compatible = "zte,zx296702-topcrm-clk";
-			reg = <0x09800000 0x1000>;
-			#clock-cells = <1>;
-		};
-
-		lsp1clk: lsp1clk@9400000 {
-			compatible = "zte,zx296702-lsp1crpm-clk";
-			reg = <0x09400000 0x1000>;
-			#clock-cells = <1>;
-		};
-
-		lsp0clk: lsp0clk@b000000 {
-			compatible = "zte,zx296702-lsp0crpm-clk";
-			reg = <0x0b000000 0x1000>;
-			#clock-cells = <1>;
-		};
-
-		uart0: serial@9405000 {
-			compatible = "zte,zx296702-uart";
-			reg = <0x09405000 0x1000>;
-			interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&lsp1clk ZX296702_UART0_WCLK>;
-			status = "disabled";
-		};
-
-		uart1: serial@9406000 {
-			compatible = "zte,zx296702-uart";
-			reg = <0x09406000 0x1000>;
-			interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&lsp1clk ZX296702_UART1_WCLK>;
-			status = "disabled";
-		};
-
-		mmc0: mmc@9408000 {
-			compatible = "snps,dw-mshc";
-			#address-cells = <1>;
-			#size-cells = <0>;
-			reg = <0x09408000 0x1000>;
-			interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
-			fifo-depth = <32>;
-			clocks = <&lsp1clk ZX296702_SDMMC0_PCLK>,
-				 <&lsp1clk ZX296702_SDMMC0_WCLK>;
-			clock-names = "biu", "ciu";
-			status = "disabled";
-		};
-
-		mmc1: mmc@b003000 {
-			compatible = "snps,dw-mshc";
-			#address-cells = <1>;
-			#size-cells = <0>;
-			reg = <0x0b003000 0x1000>;
-			interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
-			fifo-depth = <32>;
-			clocks = <&lsp0clk ZX296702_SDMMC1_PCLK>,
-				 <&lsp0clk ZX296702_SDMMC1_WCLK>;
-			clock-names = "biu", "ciu";
-			status = "disabled";
-		};
-
-		sysctrl: sysctrl@a0007000 {
-			compatible = "zte,sysctrl", "syscon";
-			reg = <0xa0007000 0x1000>;
-		};
-	};
-};
diff --git a/arch/arm/configs/zx_defconfig b/arch/arm/configs/zx_defconfig
deleted file mode 100644
index a046a492bfa7..000000000000
--- a/arch/arm/configs/zx_defconfig
+++ /dev/null
@@ -1,122 +0,0 @@
-CONFIG_SYSVIPC=y
-CONFIG_NO_HZ=y
-CONFIG_HIGH_RES_TIMERS=y
-CONFIG_LOG_BUF_SHIFT=14
-CONFIG_CGROUPS=y
-CONFIG_CGROUP_DEBUG=y
-CONFIG_CGROUP_FREEZER=y
-CONFIG_CGROUP_CPUACCT=y
-CONFIG_CGROUP_SCHED=y
-CONFIG_RT_GROUP_SCHED=y
-CONFIG_NAMESPACES=y
-CONFIG_USER_NS=y
-CONFIG_BLK_DEV_INITRD=y
-CONFIG_KALLSYMS_ALL=y
-CONFIG_EMBEDDED=y
-CONFIG_PERF_EVENTS=y
-CONFIG_SLAB=y
-# CONFIG_BLK_DEV_BSG is not set
-CONFIG_ARCH_ZX=y
-CONFIG_SOC_ZX296702=y
-# CONFIG_SWP_EMULATE is not set
-CONFIG_ARM_ERRATA_754322=y
-CONFIG_ARM_ERRATA_775420=y
-CONFIG_SMP=y
-CONFIG_VMSPLIT_2G=y
-CONFIG_PREEMPT=y
-CONFIG_AEABI=y
-CONFIG_KSM=y
-# CONFIG_IOMMU_SUPPORT is not set
-CONFIG_VFP=y
-CONFIG_NEON=y
-CONFIG_KERNEL_MODE_NEON=y
-# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
-CONFIG_HIBERNATION=y
-CONFIG_PM_RUNTIME=y
-CONFIG_PM_DEBUG=y
-CONFIG_SUSPEND_TIME=y
-CONFIG_ZBOOT_ROM_TEXT=0x0
-CONFIG_ZBOOT_ROM_BSS=0x0
-CONFIG_CMDLINE="console=ttyAMA0,115200 debug earlyprintk root=/dev/ram rw rootwait"
-#CONFIG_NET is not set
-CONFIG_DEVTMPFS=y
-CONFIG_DEVTMPFS_MOUNT=y
-CONFIG_DMA_CMA=y
-CONFIG_CMA_SIZE_MBYTES=192
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_RAM=y
-CONFIG_BLK_DEV_RAM_COUNT=1
-CONFIG_BLK_DEV_RAM_SIZE=8192
-CONFIG_UID_STAT=y
-CONFIG_SCSI=y
-CONFIG_BLK_DEV_SD=y
-CONFIG_CHR_DEV_SG=y
-CONFIG_CHR_DEV_SCH=y
-CONFIG_SCSI_MULTI_LUN=y
-CONFIG_MD=y
-CONFIG_BLK_DEV_DM=y
-CONFIG_DM_CRYPT=y
-CONFIG_DM_UEVENT=y
-CONFIG_DM_VERITY=y
-CONFIG_NETDEVICES=y
-# CONFIG_INPUT_MOUSE is not set
-CONFIG_SERIO=y
-CONFIG_SERIO_LIBPS2=y
-CONFIG_SPI=y
-CONFIG_LOGO=y
-CONFIG_SERIAL_CORE=y
-CONFIG_SERIAL_CORE_CONSOLE=y
-CONFIG_CONSOLE_POLL=y
-CONFIG_SERIAL_AMBA_PL011=y
-CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
-CONFIG_SERIAL_OF_PLATFORM=y
-# CONFIG_LEGACY_PTYS is not set
-# CONFIG_HW_RANDOM is not set
-# CONFIG_HWMON is not set
-# CONFIG_USB_SUPPORT is not set
-CONFIG_MMC=y
-CONFIG_MMC_BLOCK_MINORS=16
-CONFIG_MMC_DW=y
-CONFIG_EXT2_FS=y
-CONFIG_EXT4_FS=y
-CONFIG_EXT4_FS_POSIX_ACL=y
-CONFIG_EXT4_FS_SECURITY=y
-CONFIG_EXT4_DEBUG=y
-CONFIG_FUSE_FS=y
-CONFIG_MSDOS_FS=y
-CONFIG_VFAT_FS=y
-CONFIG_FAT_DEFAULT_CODEPAGE=936
-CONFIG_TMPFS=y
-CONFIG_TMPFS_POSIX_ACL=y
-#CONFIG_NFS_FS is not set
-CONFIG_NLS_CODEPAGE_936=y
-CONFIG_NLS_ISO8859_1=y
-CONFIG_NLS_UTF8=y
-CONFIG_PRINTK_TIME=y
-CONFIG_MAGIC_SYSRQ=y
-CONFIG_DEBUG_KERNEL=y
-CONFIG_DEBUG_INFO=y
-CONFIG_FRAME_WARN=4096
-CONFIG_DEBUG_FS=y
-CONFIG_DEBUG_MEMORY_INIT=y
-CONFIG_PANIC_TIMEOUT=5
-# CONFIG_SCHED_DEBUG is not set
-CONFIG_SCHEDSTATS=y
-CONFIG_TIMER_STATS=y
-CONFIG_DEBUG_RT_MUTEXES=y
-CONFIG_DEBUG_SPINLOCK=y
-CONFIG_DEBUG_MUTEXES=y
-CONFIG_RCU_CPU_STALL_TIMEOUT=60
-# CONFIG_FTRACE is not set
-CONFIG_KGDB=y
-CONFIG_KGDB_KDB=y
-# CONFIG_ARM_UNWIND is not set
-CONFIG_DEBUG_PREEMPT=y
-CONFIG_DEBUG_USER=y
-CONFIG_DEBUG_LL=y
-CONFIG_DYNAMIC_DEBUG=y
-CONFIG_STACKTRACE=y
-CONFIG_DEBUG_ZTE_ZX=y
-CONFIG_EARLY_PRINTK=y
-CONFIG_CRYPTO_LZO=y
-CONFIG_GPIOLIB=y
diff --git a/arch/arm/mach-zx/Kconfig b/arch/arm/mach-zx/Kconfig
deleted file mode 100644
index ea29c84a7849..000000000000
--- a/arch/arm/mach-zx/Kconfig
+++ /dev/null
@@ -1,21 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-menuconfig ARCH_ZX
-	bool "ZTE ZX family"
-	depends on ARCH_MULTI_V7
-	help
-	  Support for ZTE ZX-based family of processors. TV
-	  set-top-box processor is supported. More will be
-	  added soon.
-
-if ARCH_ZX
-
-config SOC_ZX296702
-	def_bool y
-	select ARM_GIC
-	select ARM_GLOBAL_TIMER
-	select HAVE_ARM_SCU if SMP
-	select HAVE_ARM_TWD if SMP
-	select PM_GENERIC_DOMAINS if PM
-	help
-	  Support for ZTE ZX296702 SoC which is a dual core CortexA9MP
-endif
diff --git a/arch/arm/mach-zx/Makefile b/arch/arm/mach-zx/Makefile
deleted file mode 100644
index 6f8930cdb8fb..000000000000
--- a/arch/arm/mach-zx/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_SOC_ZX296702) += zx296702.o zx296702-pm-domain.o
-obj-$(CONFIG_SMP) += headsmp.o platsmp.o
diff --git a/arch/arm/mach-zx/core.h b/arch/arm/mach-zx/core.h
deleted file mode 100644
index 25fe873892c9..000000000000
--- a/arch/arm/mach-zx/core.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright 2014 Linaro Ltd.
- * Copyright (C) 2014 ZTE Corporation.
- */
-
-#ifndef __MACH_ZX_CORE_H
-#define __MACH_ZX_CORE_H
-
-extern void zx_resume_jump(void);
-extern size_t zx_suspend_iram_sz;
-extern unsigned long zx_secondary_startup_pa;
-
-void zx_secondary_startup(void);
-
-#endif /* __MACH_ZX_CORE_H */
diff --git a/arch/arm/mach-zx/headsmp.S b/arch/arm/mach-zx/headsmp.S
deleted file mode 100644
index 0846859b0573..000000000000
--- a/arch/arm/mach-zx/headsmp.S
+++ /dev/null
@@ -1,30 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright 2014 Linaro Ltd.
- * Copyright (C) 2014 ZTE Corporation.
- */
-
-#include <linux/linkage.h>
-
-	.align 3
-	.arm
-
-/* It runs from physical address */
-ENTRY(zx_resume_jump)
-	adr	r1, zx_secondary_startup_pa
-	ldr	r0, [r1]
-	bx	r0
-ENDPROC(zx_resume_jump)
-
-ENTRY(zx_secondary_startup_pa)
-	.word	zx_secondary_startup_pa
-
-ENTRY(zx_suspend_iram_sz)
-        .word	. - zx_resume_jump
-ENDPROC(zx_secondary_startup_pa)
-
-
-ENTRY(zx_secondary_startup)
-	bl	v7_invalidate_l1
-	b	secondary_startup
-ENDPROC(zx_secondary_startup)
diff --git a/arch/arm/mach-zx/platsmp.c b/arch/arm/mach-zx/platsmp.c
deleted file mode 100644
index d4e1d3792224..000000000000
--- a/arch/arm/mach-zx/platsmp.c
+++ /dev/null
@@ -1,186 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright 2014 Linaro Ltd.
- * Copyright (C) 2014 ZTE Corporation.
- */
-
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/jiffies.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/smp.h>
-
-#include <asm/cacheflush.h>
-#include <asm/cp15.h>
-#include <asm/fncpy.h>
-#include <asm/proc-fns.h>
-#include <asm/smp_scu.h>
-#include <asm/smp_plat.h>
-
-#include "core.h"
-
-#define AON_SYS_CTRL_RESERVED1		0xa8
-
-#define BUS_MATRIX_REMAP_CONFIG		0x00
-
-#define PCU_CPU0_CTRL			0x00
-#define PCU_CPU1_CTRL			0x04
-#define PCU_CPU1_ST			0x0c
-#define PCU_GLOBAL_CTRL			0x14
-#define PCU_EXPEND_CONTROL		0x34
-
-#define ZX_IRAM_BASE			0x00200000
-
-static void __iomem *pcu_base;
-static void __iomem *matrix_base;
-static void __iomem *scu_base;
-
-void __init zx_smp_prepare_cpus(unsigned int max_cpus)
-{
-	struct device_node *np;
-	unsigned long base = 0;
-	void __iomem *aonsysctrl_base;
-	void __iomem *sys_iram;
-
-	base = scu_a9_get_base();
-	scu_base = ioremap(base, SZ_256);
-	if (!scu_base) {
-		pr_err("%s: failed to map scu\n", __func__);
-		return;
-	}
-
-	scu_enable(scu_base);
-
-	np = of_find_compatible_node(NULL, NULL, "zte,sysctrl");
-	if (!np) {
-		pr_err("%s: failed to find sysctrl node\n", __func__);
-		return;
-	}
-
-	aonsysctrl_base = of_iomap(np, 0);
-	if (!aonsysctrl_base) {
-		pr_err("%s: failed to map aonsysctrl\n", __func__);
-		of_node_put(np);
-		return;
-	}
-
-	/*
-	 * Write the address of secondary startup into the
-	 * system-wide flags register. The BootMonitor waits
-	 * until it receives a soft interrupt, and then the
-	 * secondary CPU branches to this address.
-	 */
-	__raw_writel(__pa_symbol(zx_secondary_startup),
-		     aonsysctrl_base + AON_SYS_CTRL_RESERVED1);
-
-	iounmap(aonsysctrl_base);
-	of_node_put(np);
-
-	np = of_find_compatible_node(NULL, NULL, "zte,zx296702-pcu");
-	pcu_base = of_iomap(np, 0);
-	of_node_put(np);
-	WARN_ON(!pcu_base);
-
-	np = of_find_compatible_node(NULL, NULL, "zte,zx-bus-matrix");
-	matrix_base = of_iomap(np, 0);
-	of_node_put(np);
-	WARN_ON(!matrix_base);
-
-	/* Map the first 4 KB IRAM for suspend usage */
-	sys_iram = __arm_ioremap_exec(ZX_IRAM_BASE, PAGE_SIZE, false);
-	zx_secondary_startup_pa = __pa_symbol(zx_secondary_startup);
-	fncpy(sys_iram, &zx_resume_jump, zx_suspend_iram_sz);
-}
-
-static int zx_boot_secondary(unsigned int cpu, struct task_struct *idle)
-{
-	static bool first_boot = true;
-
-	if (first_boot) {
-		arch_send_wakeup_ipi_mask(cpumask_of(cpu));
-		first_boot = false;
-		return 0;
-	}
-
-	/* Swap the base address mapping between IRAM and IROM */
-	writel_relaxed(0x1, matrix_base + BUS_MATRIX_REMAP_CONFIG);
-
-	/* Power on CPU1 */
-	writel_relaxed(0x0, pcu_base + PCU_CPU1_CTRL);
-
-	/* Wait for power on ack */
-	while (readl_relaxed(pcu_base + PCU_CPU1_ST) & 0x4)
-		cpu_relax();
-
-	/* Swap back the mapping of IRAM and IROM */
-	writel_relaxed(0x0, matrix_base + BUS_MATRIX_REMAP_CONFIG);
-
-	return 0;
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-static inline void cpu_enter_lowpower(void)
-{
-	unsigned int v;
-
-	asm volatile(
-		"mcr	p15, 0, %1, c7, c5, 0\n"
-	"	mcr	p15, 0, %1, c7, c10, 4\n"
-	/*
-	 * Turn off coherency
-	 */
-	"	mrc	p15, 0, %0, c1, c0, 1\n"
-	"	bic	%0, %0, %3\n"
-	"	mcr	p15, 0, %0, c1, c0, 1\n"
-	"	mrc	p15, 0, %0, c1, c0, 0\n"
-	"	bic	%0, %0, %2\n"
-	"	mcr	p15, 0, %0, c1, c0, 0\n"
-	  : "=&r" (v)
-	  : "r" (0), "Ir" (CR_C), "Ir" (0x40)
-	  : "cc");
-}
-
-static int zx_cpu_kill(unsigned int cpu)
-{
-	unsigned long timeout = jiffies + msecs_to_jiffies(2000);
-
-	writel_relaxed(0x2, pcu_base + PCU_CPU1_CTRL);
-
-	while ((readl_relaxed(pcu_base + PCU_CPU1_ST) & 0x3) != 0x0) {
-		if (time_after(jiffies, timeout)) {
-			pr_err("*** cpu1 poweroff timeout\n");
-			break;
-		}
-	}
-	return 1;
-}
-
-static void zx_cpu_die(unsigned int cpu)
-{
-	scu_power_mode(scu_base, SCU_PM_POWEROFF);
-	cpu_enter_lowpower();
-
-	while (1)
-		cpu_do_idle();
-}
-#endif
-
-static void zx_secondary_init(unsigned int cpu)
-{
-	scu_power_mode(scu_base, SCU_PM_NORMAL);
-}
-
-static const struct smp_operations zx_smp_ops __initconst = {
-	.smp_prepare_cpus	= zx_smp_prepare_cpus,
-	.smp_secondary_init	= zx_secondary_init,
-	.smp_boot_secondary	= zx_boot_secondary,
-#ifdef CONFIG_HOTPLUG_CPU
-	.cpu_kill		= zx_cpu_kill,
-	.cpu_die		= zx_cpu_die,
-#endif
-};
-
-CPU_METHOD_OF_DECLARE(zx_smp, "zte,zx296702-smp", &zx_smp_ops);
diff --git a/arch/arm/mach-zx/zx296702-pm-domain.c b/arch/arm/mach-zx/zx296702-pm-domain.c
deleted file mode 100644
index 7a08bf9dd792..000000000000
--- a/arch/arm/mach-zx/zx296702-pm-domain.c
+++ /dev/null
@@ -1,202 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2015 Linaro Ltd.
- *
- * Author: Jun Nie <jun.nie@linaro.org>
- */
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/platform_device.h>
-#include <linux/pm_domain.h>
-#include <linux/slab.h>
-
-#define PCU_DM_CLKEN        0x18
-#define PCU_DM_RSTEN        0x1C
-#define PCU_DM_ISOEN        0x20
-#define PCU_DM_PWRDN        0x24
-#define PCU_DM_ACK_SYNC     0x28
-
-enum {
-	PCU_DM_NEON0 = 0,
-	PCU_DM_NEON1,
-	PCU_DM_GPU,
-	PCU_DM_DECPPU,
-	PCU_DM_VOU,
-	PCU_DM_R2D,
-	PCU_DM_TOP,
-};
-
-static void __iomem *pcubase;
-
-struct zx_pm_domain {
-	struct generic_pm_domain dm;
-	unsigned int bit;
-};
-
-static int normal_power_off(struct generic_pm_domain *domain)
-{
-	struct zx_pm_domain *zpd = (struct zx_pm_domain *)domain;
-	unsigned long loop = 1000;
-	u32 tmp;
-
-	tmp = readl_relaxed(pcubase + PCU_DM_CLKEN);
-	tmp &= ~BIT(zpd->bit);
-	writel_relaxed(tmp, pcubase + PCU_DM_CLKEN);
-	udelay(5);
-
-	tmp = readl_relaxed(pcubase + PCU_DM_ISOEN);
-	tmp &= ~BIT(zpd->bit);
-	writel_relaxed(tmp | BIT(zpd->bit), pcubase + PCU_DM_ISOEN);
-	udelay(5);
-
-	tmp = readl_relaxed(pcubase + PCU_DM_RSTEN);
-	tmp &= ~BIT(zpd->bit);
-	writel_relaxed(tmp, pcubase + PCU_DM_RSTEN);
-	udelay(5);
-
-	tmp = readl_relaxed(pcubase + PCU_DM_PWRDN);
-	tmp &= ~BIT(zpd->bit);
-	writel_relaxed(tmp | BIT(zpd->bit), pcubase + PCU_DM_PWRDN);
-	do {
-		tmp = readl_relaxed(pcubase + PCU_DM_ACK_SYNC) & BIT(zpd->bit);
-	} while (--loop && !tmp);
-
-	if (!loop) {
-		pr_err("Error: %s %s fail\n", __func__, domain->name);
-		return -EIO;
-	}
-
-	return 0;
-}
-
-static int normal_power_on(struct generic_pm_domain *domain)
-{
-	struct zx_pm_domain *zpd = (struct zx_pm_domain *)domain;
-	unsigned long loop = 10000;
-	u32 tmp;
-
-	tmp = readl_relaxed(pcubase + PCU_DM_PWRDN);
-	tmp &= ~BIT(zpd->bit);
-	writel_relaxed(tmp, pcubase + PCU_DM_PWRDN);
-	do {
-		tmp = readl_relaxed(pcubase + PCU_DM_ACK_SYNC) & BIT(zpd->bit);
-	} while (--loop && tmp);
-
-	if (!loop) {
-		pr_err("Error: %s %s fail\n", __func__, domain->name);
-		return -EIO;
-	}
-
-	tmp = readl_relaxed(pcubase + PCU_DM_RSTEN);
-	tmp &= ~BIT(zpd->bit);
-	writel_relaxed(tmp | BIT(zpd->bit), pcubase + PCU_DM_RSTEN);
-	udelay(5);
-
-	tmp = readl_relaxed(pcubase + PCU_DM_ISOEN);
-	tmp &= ~BIT(zpd->bit);
-	writel_relaxed(tmp, pcubase + PCU_DM_ISOEN);
-	udelay(5);
-
-	tmp = readl_relaxed(pcubase + PCU_DM_CLKEN);
-	tmp &= ~BIT(zpd->bit);
-	writel_relaxed(tmp | BIT(zpd->bit), pcubase + PCU_DM_CLKEN);
-	udelay(5);
-	return 0;
-}
-
-static struct zx_pm_domain gpu_domain = {
-	.dm = {
-		.name		= "gpu_domain",
-		.power_off	= normal_power_off,
-		.power_on	= normal_power_on,
-	},
-	.bit = PCU_DM_GPU,
-};
-
-static struct zx_pm_domain decppu_domain = {
-	.dm = {
-		.name		= "decppu_domain",
-		.power_off	= normal_power_off,
-		.power_on	= normal_power_on,
-	},
-	.bit = PCU_DM_DECPPU,
-};
-
-static struct zx_pm_domain vou_domain = {
-	.dm = {
-		.name		= "vou_domain",
-		.power_off	= normal_power_off,
-		.power_on	= normal_power_on,
-	},
-	.bit = PCU_DM_VOU,
-};
-
-static struct zx_pm_domain r2d_domain = {
-	.dm = {
-		.name		= "r2d_domain",
-		.power_off	= normal_power_off,
-		.power_on	= normal_power_on,
-	},
-	.bit = PCU_DM_R2D,
-};
-
-static struct generic_pm_domain *zx296702_pm_domains[] = {
-	&vou_domain.dm,
-	&gpu_domain.dm,
-	&decppu_domain.dm,
-	&r2d_domain.dm,
-};
-
-static int zx296702_pd_probe(struct platform_device *pdev)
-{
-	struct genpd_onecell_data *genpd_data;
-	struct resource *res;
-	int i;
-
-	genpd_data = devm_kzalloc(&pdev->dev, sizeof(*genpd_data), GFP_KERNEL);
-	if (!genpd_data)
-		return -ENOMEM;
-
-	genpd_data->domains = zx296702_pm_domains;
-	genpd_data->num_domains = ARRAY_SIZE(zx296702_pm_domains);
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "no memory resource defined\n");
-		return -ENODEV;
-	}
-
-	pcubase = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(pcubase)) {
-		dev_err(&pdev->dev, "ioremap fail.\n");
-		return -EIO;
-	}
-
-	for (i = 0; i < ARRAY_SIZE(zx296702_pm_domains); ++i)
-		pm_genpd_init(zx296702_pm_domains[i], NULL, false);
-
-	of_genpd_add_provider_onecell(pdev->dev.of_node, genpd_data);
-	return 0;
-}
-
-static const struct of_device_id zx296702_pm_domain_matches[] __initconst = {
-	{ .compatible = "zte,zx296702-pcu", },
-	{ },
-};
-
-static struct platform_driver zx296702_pd_driver __initdata = {
-	.driver = {
-		.name = "zx-powerdomain",
-		.owner = THIS_MODULE,
-		.of_match_table = zx296702_pm_domain_matches,
-	},
-	.probe = zx296702_pd_probe,
-};
-
-static int __init zx296702_pd_init(void)
-{
-	return platform_driver_register(&zx296702_pd_driver);
-}
-subsys_initcall(zx296702_pd_init);
diff --git a/arch/arm/mach-zx/zx296702.c b/arch/arm/mach-zx/zx296702.c
deleted file mode 100644
index fd8fa3a074fa..000000000000
--- a/arch/arm/mach-zx/zx296702.c
+++ /dev/null
@@ -1,22 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright 2014 Linaro Ltd.
- * Copyright (C) 2014 ZTE Corporation.
- */
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
-
-static const char *const zx296702_dt_compat[] __initconst = {
-	"zte,zx296702",
-	NULL,
-};
-
-DT_MACHINE_START(ZX, "ZTE ZX296702 (Device Tree)")
-	.dt_compat	= zx296702_dt_compat,
-	.l2c_aux_val    = 0,
-	.l2c_aux_mask   = ~0,
-MACHINE_END