Merge tag 'mips_6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS updates from Thomas Bogendoerfer:

 - Added support for EcoNet platform

 - Added support for parallel CPU bring up on EyeQ

 - Other cleanups and fixes

* tag 'mips_6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (23 commits)
  MIPS: loongson2ef: lemote-2f: add missing function prototypes
  MIPS: loongson2ef: cs5536: add missing function prototypes
  MIPS: SMP: Move the AP sync point before the calibration delay
  mips: econet: Fix incorrect Kconfig dependencies
  MAINTAINERS: Add entry for newly added EcoNet platform.
  mips: dts: Add EcoNet DTS with EN751221 and SmartFiber XP8421-B board
  dt-bindings: vendor-prefixes: Add SmartFiber
  mips: Add EcoNet MIPS platform support
  dt-bindings: mips: Add EcoNet platform binding
  MIPS: bcm63xx: nvram: avoid inefficient use of crc32_le_combine()
  mips: dts: pic32: pic32mzda: Rename the sdhci nodename to match with common mmc-controller binding
  MIPS: SMP: Move the AP sync point before the non-parallel aware functions
  MIPS: Replace strcpy() with strscpy() in vpe_elfload()
  MIPS: BCM63XX: Replace strcpy() with strscpy() in board_prom_init()
  mips: ptrace: Improve code formatting and indentation
  MIPS: SMP: Implement parallel CPU bring up for EyeQ
  mips: Add -std= flag specified in KBUILD_CFLAGS to vdso CFLAGS
  MIPS: Loongson64: Add missing '#interrupt-cells' for loongson64c_ls7a
  mips: dts: realtek: Add MDIO controller
  MIPS: txx9: gpio: use new line value setter callbacks
  ...

28 files changed, 388 insertions, 33 deletions

diff --git a/arch/mips/Kbuild.platforms b/arch/mips/Kbuild.platforms
index bca37ddf974b..41a00fa860c1 100644
--- a/arch/mips/Kbuild.platforms
+++ b/arch/mips/Kbuild.platforms
@@ -11,6 +11,7 @@ platform-$(CONFIG_CAVIUM_OCTEON_SOC)	+= cavium-octeon/
 platform-$(CONFIG_EYEQ)			+= mobileye/
 platform-$(CONFIG_MIPS_COBALT)		+= cobalt/
 platform-$(CONFIG_MACH_DECSTATION)	+= dec/
+platform-$(CONFIG_ECONET)		+= econet/
 platform-$(CONFIG_MIPS_GENERIC)		+= generic/
 platform-$(CONFIG_MACH_JAZZ)		+= jazz/
 platform-$(CONFIG_LANTIQ)		+= lantiq/
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index fc0772c1bad4..1e48184ecf1e 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -391,6 +391,31 @@ config MACH_DECSTATION
 
 	  otherwise choose R3000.
 
+config ECONET
+	bool "EcoNet MIPS family"
+	select BOOT_RAW
+	select CPU_BIG_ENDIAN
+	select DEBUG_ZBOOT if DEBUG_KERNEL
+	select EARLY_PRINTK_8250
+	select ECONET_EN751221_TIMER
+	select SERIAL_8250
+	select SERIAL_OF_PLATFORM
+	select SYS_SUPPORTS_BIG_ENDIAN
+	select SYS_HAS_CPU_MIPS32_R1
+	select SYS_HAS_CPU_MIPS32_R2
+	select SYS_HAS_EARLY_PRINTK
+	select SYS_SUPPORTS_32BIT_KERNEL
+	select SYS_SUPPORTS_MIPS16
+	select SYS_SUPPORTS_ZBOOT_UART16550
+	select USE_GENERIC_EARLY_PRINTK_8250
+	select USE_OF
+	help
+	  EcoNet EN75xx MIPS devices are big endian MIPS machines used
+	  in XPON (fiber) and DSL applications. They have SPI, PCI, USB,
+	  GPIO, and Ethernet, with optional XPON, DSL, and VoIP DSP cores.
+	  Don't confuse these with the Airoha ARM devices sometimes referred
+	  to as "EcoNet", this family is for MIPS based devices only.
+
 config MACH_JAZZ
 	bool "Jazz family of machines"
 	select ARC_MEMORY
@@ -617,6 +642,7 @@ config EYEQ
 	select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
 	select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
 	select USE_OF
+	select HOTPLUG_PARALLEL if SMP
 	help
 	  Select this to build a kernel supporting EyeQ SoC from Mobileye.
 
@@ -1020,6 +1046,7 @@ source "arch/mips/ath79/Kconfig"
 source "arch/mips/bcm47xx/Kconfig"
 source "arch/mips/bcm63xx/Kconfig"
 source "arch/mips/bmips/Kconfig"
+source "arch/mips/econet/Kconfig"
 source "arch/mips/generic/Kconfig"
 source "arch/mips/ingenic/Kconfig"
 source "arch/mips/jazz/Kconfig"
@@ -2287,6 +2314,7 @@ config MIPS_CPS
 	select MIPS_CM
 	select MIPS_CPS_PM if HOTPLUG_CPU
 	select SMP
+	select HOTPLUG_SMT if HOTPLUG_PARALLEL
 	select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU
 	select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
 	select SYS_SUPPORTS_HOTPLUG_CPU
diff --git a/arch/mips/alchemy/common/gpiolib.c b/arch/mips/alchemy/common/gpiolib.c
index 1b16daaa86ae..411f70ceb762 100644
--- a/arch/mips/alchemy/common/gpiolib.c
+++ b/arch/mips/alchemy/common/gpiolib.c
@@ -119,9 +119,11 @@ static int alchemy_gpic_get(struct gpio_chip *chip, unsigned int off)
 	return !!au1300_gpio_get_value(off + AU1300_GPIO_BASE);
 }
 
-static void alchemy_gpic_set(struct gpio_chip *chip, unsigned int off, int v)
+static int alchemy_gpic_set(struct gpio_chip *chip, unsigned int off, int v)
 {
 	au1300_gpio_set_value(off + AU1300_GPIO_BASE, v);
+
+	return 0;
 }
 
 static int alchemy_gpic_dir_input(struct gpio_chip *chip, unsigned int off)
@@ -145,7 +147,7 @@ static struct gpio_chip au1300_gpiochip = {
 	.direction_input	= alchemy_gpic_dir_input,
 	.direction_output	= alchemy_gpic_dir_output,
 	.get			= alchemy_gpic_get,
-	.set			= alchemy_gpic_set,
+	.set_rv			= alchemy_gpic_set,
 	.to_irq			= alchemy_gpic_gpio_to_irq,
 	.base			= AU1300_GPIO_BASE,
 	.ngpio			= AU1300_GPIO_NUM,
diff --git a/arch/mips/bcm63xx/boards/board_bcm963xx.c b/arch/mips/bcm63xx/boards/board_bcm963xx.c
index 9cc8fbf218a5..c5617b889b1c 100644
--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
@@ -764,7 +764,7 @@ void __init board_prom_init(void)
 			snprintf(cfe_version, 12, "%s", (char *) &cfe[4]);
 		}
 	} else {
-		strcpy(cfe_version, "unknown");
+		strscpy(cfe_version, "unknown");
 	}
 	pr_info("CFE version: %s\n", cfe_version);
 
diff --git a/arch/mips/bcm63xx/gpio.c b/arch/mips/bcm63xx/gpio.c
index 5c4a233db55f..e7a53cd0dec5 100644
--- a/arch/mips/bcm63xx/gpio.c
+++ b/arch/mips/bcm63xx/gpio.c
@@ -35,8 +35,7 @@ static void bcm63xx_gpio_out_low_reg_init(void)
 static DEFINE_SPINLOCK(bcm63xx_gpio_lock);
 static u32 gpio_out_low, gpio_out_high;
 
-static void bcm63xx_gpio_set(struct gpio_chip *chip,
-			     unsigned gpio, int val)
+static int bcm63xx_gpio_set(struct gpio_chip *chip, unsigned int gpio, int val)
 {
 	u32 reg;
 	u32 mask;
@@ -62,6 +61,8 @@ static void bcm63xx_gpio_set(struct gpio_chip *chip,
 		*v &= ~mask;
 	bcm_gpio_writel(*v, reg);
 	spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags);
+
+	return 0;
 }
 
 static int bcm63xx_gpio_get(struct gpio_chip *chip, unsigned gpio)
@@ -130,7 +131,7 @@ static struct gpio_chip bcm63xx_gpio_chip = {
 	.direction_input	= bcm63xx_gpio_direction_input,
 	.direction_output	= bcm63xx_gpio_direction_output,
 	.get			= bcm63xx_gpio_get,
-	.set			= bcm63xx_gpio_set,
+	.set_rv			= bcm63xx_gpio_set,
 	.base			= 0,
 };
 
diff --git a/arch/mips/boot/compressed/uart-16550.c b/arch/mips/boot/compressed/uart-16550.c
index db618e72a0c4..529e77a6487c 100644
--- a/arch/mips/boot/compressed/uart-16550.c
+++ b/arch/mips/boot/compressed/uart-16550.c
@@ -20,6 +20,11 @@
 #define PORT(offset) (CKSEG1ADDR(INGENIC_UART_BASE_ADDR) + (4 * offset))
 #endif
 
+#ifdef CONFIG_ECONET
+#define EN75_UART_BASE	0x1fbf0003
+#define PORT(offset)	(CKSEG1ADDR(EN75_UART_BASE) + (4 * (offset)))
+#endif
+
 #ifndef IOTYPE
 #define IOTYPE char
 #endif
diff --git a/arch/mips/boot/dts/Makefile b/arch/mips/boot/dts/Makefile
index ff468439a8c4..7375c6ced82b 100644
--- a/arch/mips/boot/dts/Makefile
+++ b/arch/mips/boot/dts/Makefile
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 subdir-$(CONFIG_BMIPS_GENERIC)		+= brcm
 subdir-$(CONFIG_CAVIUM_OCTEON_SOC)	+= cavium-octeon
+subdir-$(CONFIG_ECONET)			+= econet
 subdir-$(CONFIG_EYEQ)			+= mobileye
 subdir-$(CONFIG_FIT_IMAGE_FDT_MARDUK)   += img
 subdir-$(CONFIG_FIT_IMAGE_FDT_BOSTON)	+= img
diff --git a/arch/mips/boot/dts/econet/Makefile b/arch/mips/boot/dts/econet/Makefile
new file mode 100644
index 000000000000..b467d5624e39
--- /dev/null
+++ b/arch/mips/boot/dts/econet/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_DTB_ECONET_SMARTFIBER_XP8421_B)	+= en751221_smartfiber_xp8421-b.dtb
diff --git a/arch/mips/boot/dts/econet/en751221.dtsi b/arch/mips/boot/dts/econet/en751221.dtsi
new file mode 100644
index 000000000000..66197e73d4f0
--- /dev/null
+++ b/arch/mips/boot/dts/econet/en751221.dtsi
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/dts-v1/;
+
+/ {
+	compatible = "econet,en751221";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	hpt_clock: clock {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <200000000>;  /* 200 MHz */
+	};
+
+	cpus: cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			device_type = "cpu";
+			compatible = "mips,mips24KEc";
+			reg = <0>;
+		};
+	};
+
+	cpuintc: interrupt-controller {
+		compatible = "mti,cpu-interrupt-controller";
+		interrupt-controller;
+		#address-cells = <0>;
+		#interrupt-cells = <1>;
+	};
+
+	intc: interrupt-controller@1fb40000 {
+		compatible = "econet,en751221-intc";
+		reg = <0x1fb40000 0x100>;
+		interrupt-parent = <&cpuintc>;
+		interrupts = <2>;
+
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		econet,shadow-interrupts = <7 2>, <8 3>, <13 12>, <30 29>;
+	};
+
+	uart: serial@1fbf0000 {
+		compatible = "ns16550";
+		reg = <0x1fbf0000 0x30>;
+		reg-io-width = <4>;
+		reg-shift = <2>;
+		interrupt-parent = <&intc>;
+		interrupts = <0>;
+		/*
+		 * Conversion of baud rate to clock frequency requires a
+		 * computation that is not in the ns16550 driver, so this
+		 * uart is fixed at 115200 baud.
+		 */
+		clock-frequency = <1843200>;
+	};
+
+	timer_hpt: timer@1fbf0400 {
+		compatible = "econet,en751221-timer";
+		reg = <0x1fbf0400 0x100>;
+
+		interrupt-parent = <&intc>;
+		interrupts = <30>;
+		clocks = <&hpt_clock>;
+	};
+};
diff --git a/arch/mips/boot/dts/econet/en751221_smartfiber_xp8421-b.dts b/arch/mips/boot/dts/econet/en751221_smartfiber_xp8421-b.dts
new file mode 100644
index 000000000000..8223c5bce67f
--- /dev/null
+++ b/arch/mips/boot/dts/econet/en751221_smartfiber_xp8421-b.dts
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/dts-v1/;
+
+#include "en751221.dtsi"
+
+/ {
+	model = "SmartFiber XP8421-B";
+	compatible = "smartfiber,xp8421-b", "econet,en751221";
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x1c000000>;
+	};
+
+	chosen {
+		stdout-path = "/serial@1fbf0000:115200";
+		linux,usable-memory-range = <0x00020000 0x1bfe0000>;
+	};
+};
diff --git a/arch/mips/boot/dts/loongson/loongson64c_4core_ls7a.dts b/arch/mips/boot/dts/loongson/loongson64c_4core_ls7a.dts
index c7ea4f1c0bb2..6c277ab83d4b 100644
--- a/arch/mips/boot/dts/loongson/loongson64c_4core_ls7a.dts
+++ b/arch/mips/boot/dts/loongson/loongson64c_4core_ls7a.dts
@@ -29,6 +29,7 @@
 		compatible = "loongson,pch-msi-1.0";
 		reg = <0 0x2ff00000 0 0x8>;
 		interrupt-controller;
+		#interrupt-cells = <1>;
 		msi-controller;
 		loongson,msi-base-vec = <64>;
 		loongson,msi-num-vecs = <64>;
diff --git a/arch/mips/boot/dts/pic32/pic32mzda.dtsi b/arch/mips/boot/dts/pic32/pic32mzda.dtsi
index fdc721b414a8..feca35ba56a4 100644
--- a/arch/mips/boot/dts/pic32/pic32mzda.dtsi
+++ b/arch/mips/boot/dts/pic32/pic32mzda.dtsi
@@ -225,7 +225,7 @@
 		gpio-ranges = <&pic32_pinctrl 0 144 16>;
 	};
 
-	sdhci: sdhci@1f8ec000 {
+	sdhci: mmc@1f8ec000 {
 		compatible = "microchip,pic32mzda-sdhci";
 		reg = <0x1f8ec000 0x100>;
 		interrupts = <191 IRQ_TYPE_LEVEL_HIGH>;
diff --git a/arch/mips/boot/dts/realtek/rtl930x.dtsi b/arch/mips/boot/dts/realtek/rtl930x.dtsi
index f2e57ea3a60c..101bab72a95f 100644
--- a/arch/mips/boot/dts/realtek/rtl930x.dtsi
+++ b/arch/mips/boot/dts/realtek/rtl930x.dtsi
@@ -69,6 +69,39 @@
 			#size-cells = <0>;
 			status = "disabled";
 		};
+
+		mdio_controller: mdio-controller@ca00 {
+			compatible = "realtek,rtl9301-mdio";
+			reg = <0xca00 0x200>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+
+			mdio0: mdio-bus@0 {
+				reg = <0>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+				status = "disabled";
+			};
+			mdio1: mdio-bus@1 {
+				reg = <1>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+				status = "disabled";
+			};
+			mdio2: mdio-bus@2 {
+				reg = <2>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+				status = "disabled";
+			};
+			mdio3: mdio-bus@3 {
+				reg = <3>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+				status = "disabled";
+			};
+		};
 	};
 
 	soc: soc@18000000 {
diff --git a/arch/mips/econet/Kconfig b/arch/mips/econet/Kconfig
new file mode 100644
index 000000000000..fd69884cc9a8
--- /dev/null
+++ b/arch/mips/econet/Kconfig
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: GPL-2.0
+if ECONET
+
+choice
+	prompt "EcoNet SoC selection"
+	default SOC_ECONET_EN751221
+	help
+	  Select EcoNet MIPS SoC type. Individual SoCs within a family are
+	  very similar, so is it enough to select the right family, and
+	  then customize to the specific SoC using the device tree only.
+
+	config SOC_ECONET_EN751221
+		bool "EN751221 family"
+		select COMMON_CLK
+		select ECONET_EN751221_INTC
+		select IRQ_MIPS_CPU
+		select SMP
+		select SMP_UP
+		select SYS_SUPPORTS_SMP
+		help
+		  The EN751221 family includes EN7512, RN7513, EN7521, EN7526.
+		  They are based on single core MIPS 34Kc processors. To boot
+		  this kernel, you will need a device tree such as
+		  MIPS_RAW_APPENDED_DTB=y, and a root filesystem.
+endchoice
+
+choice
+	prompt "Devicetree selection"
+	default DTB_ECONET_NONE
+	help
+	  Select the devicetree.
+
+	config DTB_ECONET_NONE
+		bool "None"
+
+	config DTB_ECONET_SMARTFIBER_XP8421_B
+		bool "EN751221 SmartFiber XP8421-B"
+		depends on SOC_ECONET_EN751221
+		select BUILTIN_DTB
+		help
+		  The SmartFiber XP8421-B is a device based on the EN751221 SoC.
+		  It has 512MB of memory and 256MB of NAND flash. This kernel
+		  needs only an appended initramfs to boot. It can be loaded
+		  through XMODEM and booted from memory in the bootloader, or
+		  it can be packed in tclinux.trx format and written to flash.
+endchoice
+
+endif
diff --git a/arch/mips/econet/Makefile b/arch/mips/econet/Makefile
new file mode 100644
index 000000000000..7e4529e7d3d7
--- /dev/null
+++ b/arch/mips/econet/Makefile
@@ -0,0 +1,2 @@
+
+obj-y := init.o
diff --git a/arch/mips/econet/Platform b/arch/mips/econet/Platform
new file mode 100644
index 000000000000..ea5616447bcd
--- /dev/null
+++ b/arch/mips/econet/Platform
@@ -0,0 +1,5 @@
+# To address a 7.2MB kernel size limit in the EcoNet SDK bootloader,
+# we put the load address well above where the bootloader loads and then use
+# zboot. So please set CONFIG_ZBOOT_LOAD_ADDRESS to the address where your
+# bootloader actually places the kernel.
+load-$(CONFIG_ECONET)	+= 0xffffffff81000000
diff --git a/arch/mips/econet/init.c b/arch/mips/econet/init.c
new file mode 100644
index 000000000000..6f43ffb209cb
--- /dev/null
+++ b/arch/mips/econet/init.c
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * EcoNet setup code
+ *
+ * Copyright (C) 2025 Caleb James DeLisle <cjd@cjdns.fr>
+ */
+
+#include <linux/init.h>
+#include <linux/of_clk.h>
+#include <linux/irqchip.h>
+
+#include <asm/addrspace.h>
+#include <asm/io.h>
+#include <asm/bootinfo.h>
+#include <asm/time.h>
+#include <asm/prom.h>
+#include <asm/smp-ops.h>
+#include <asm/reboot.h>
+
+#define CR_AHB_RSTCR		((void __iomem *)CKSEG1ADDR(0x1fb00040))
+#define RESET			BIT(31)
+
+#define UART_BASE		CKSEG1ADDR(0x1fbf0003)
+#define UART_REG_SHIFT		2
+
+static void hw_reset(char *command)
+{
+	iowrite32(RESET, CR_AHB_RSTCR);
+}
+
+/* 1. Bring up early printk. */
+void __init prom_init(void)
+{
+	setup_8250_early_printk_port(UART_BASE, UART_REG_SHIFT, 0);
+	_machine_restart = hw_reset;
+}
+
+/* 2. Parse the DT and find memory */
+void __init plat_mem_setup(void)
+{
+	void *dtb;
+
+	set_io_port_base(KSEG1);
+
+	dtb = get_fdt();
+	if (!dtb)
+		panic("no dtb found");
+
+	__dt_setup_arch(dtb);
+
+	early_init_dt_scan_memory();
+}
+
+/* 3. Overload __weak device_tree_init(), add SMP_UP ops */
+void __init device_tree_init(void)
+{
+	unflatten_and_copy_device_tree();
+
+	register_up_smp_ops();
+}
+
+const char *get_system_type(void)
+{
+	return "EcoNet-EN75xx";
+}
+
+/* 4. Initialize the IRQ subsystem */
+void __init arch_init_irq(void)
+{
+	irqchip_init();
+}
+
+/* 5. Timers */
+void __init plat_time_init(void)
+{
+	of_clk_init(NULL);
+	timer_probe();
+}
diff --git a/arch/mips/include/asm/mach-loongson2ef/cs5536/cs5536_pci.h b/arch/mips/include/asm/mach-loongson2ef/cs5536/cs5536_pci.h
index a0d4b752899e..5dbc9b13d15b 100644
--- a/arch/mips/include/asm/mach-loongson2ef/cs5536/cs5536_pci.h
+++ b/arch/mips/include/asm/mach-loongson2ef/cs5536/cs5536_pci.h
@@ -12,12 +12,32 @@
 #ifndef _CS5536_PCI_H
 #define _CS5536_PCI_H
 
+#include <linux/init.h>
 #include <linux/types.h>
 #include <linux/pci_regs.h>
 
 extern void cs5536_pci_conf_write4(int function, int reg, u32 value);
 extern u32 cs5536_pci_conf_read4(int function, int reg);
 
+extern void pci_ehci_write_reg(int reg, u32 value);
+extern u32 pci_ehci_read_reg(int reg);
+
+extern void pci_ide_write_reg(int reg, u32 value);
+extern u32 pci_ide_read_reg(int reg);
+
+extern void pci_acc_write_reg(int reg, u32 value);
+extern u32 pci_acc_read_reg(int reg);
+
+extern void pci_ohci_write_reg(int reg, u32 value);
+extern u32 pci_ohci_read_reg(int reg);
+
+extern void pci_isa_write_bar(int n, u32 value);
+extern u32 pci_isa_read_bar(int n);
+extern void pci_isa_write_reg(int reg, u32 value);
+extern u32 pci_isa_read_reg(int reg);
+
+extern int __init init_mfgpt_clocksource(void);
+
 #define CS5536_ACC_INTR		9
 #define CS5536_IDE_INTR		14
 #define CS5536_USB_INTR		11
diff --git a/arch/mips/include/asm/mach-loongson2ef/loongson.h b/arch/mips/include/asm/mach-loongson2ef/loongson.h
index ca039b8dcde3..4a098fb10232 100644
--- a/arch/mips/include/asm/mach-loongson2ef/loongson.h
+++ b/arch/mips/include/asm/mach-loongson2ef/loongson.h
@@ -18,6 +18,9 @@ extern void bonito_irq_init(void);
 extern void mach_prepare_reboot(void);
 extern void mach_prepare_shutdown(void);
 
+/* machine-specific PROM functions */
+extern void __init mach_prom_init_machtype(void);
+
 /* environment arguments from bootloader */
 extern u32 cpu_clock_freq;
 extern u32 memsize, highmemsize;
@@ -45,6 +48,12 @@ extern void __init mach_init_irq(void);
 extern void mach_irq_dispatch(unsigned int pending);
 extern int mach_i8259_irq(void);
 
+/* power management functions */
+extern void setup_wakeup_events(void);
+extern int wakeup_loongson(void);
+extern void __weak mach_suspend(void);
+extern void __weak mach_resume(void);
+
 /* We need this in some places... */
 #define delay() ({		\
 	int x;				\
diff --git a/arch/mips/include/asm/topology.h b/arch/mips/include/asm/topology.h
index 0673d2d0f2e6..5158c802eb65 100644
--- a/arch/mips/include/asm/topology.h
+++ b/arch/mips/include/asm/topology.h
@@ -16,6 +16,9 @@
 #define topology_core_id(cpu)			(cpu_core(&cpu_data[cpu]))
 #define topology_core_cpumask(cpu)		(&cpu_core_map[cpu])
 #define topology_sibling_cpumask(cpu)		(&cpu_sibling_map[cpu])
+
+extern struct cpumask __cpu_primary_thread_mask;
+#define cpu_primary_thread_mask ((const struct cpumask *)&__cpu_primary_thread_mask)
 #endif
 
 #endif /* __ASM_TOPOLOGY_H */
diff --git a/arch/mips/kernel/gpio_txx9.c b/arch/mips/kernel/gpio_txx9.c
index 8c083612df9d..027fb57d0d79 100644
--- a/arch/mips/kernel/gpio_txx9.c
+++ b/arch/mips/kernel/gpio_txx9.c
@@ -32,14 +32,16 @@ static void txx9_gpio_set_raw(unsigned int offset, int value)
 	__raw_writel(val, &txx9_pioptr->dout);
 }
 
-static void txx9_gpio_set(struct gpio_chip *chip, unsigned int offset,
-			  int value)
+static int txx9_gpio_set(struct gpio_chip *chip, unsigned int offset,
+			 int value)
 {
 	unsigned long flags;
 	spin_lock_irqsave(&txx9_gpio_lock, flags);
 	txx9_gpio_set_raw(offset, value);
 	mmiowb();
 	spin_unlock_irqrestore(&txx9_gpio_lock, flags);
+
+	return 0;
 }
 
 static int txx9_gpio_dir_in(struct gpio_chip *chip, unsigned int offset)
@@ -68,7 +70,7 @@ static int txx9_gpio_dir_out(struct gpio_chip *chip, unsigned int offset,
 
 static struct gpio_chip txx9_gpio_chip = {
 	.get = txx9_gpio_get,
-	.set = txx9_gpio_set,
+	.set_rv = txx9_gpio_set,
 	.direction_input = txx9_gpio_dir_in,
 	.direction_output = txx9_gpio_dir_out,
 	.label = "TXx9",
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index f7107479c7fa..b890d64d352c 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -922,11 +922,13 @@ static const struct pt_regs_offset regoffset_table[] = {
  */
 int regs_query_register_offset(const char *name)
 {
-        const struct pt_regs_offset *roff;
-        for (roff = regoffset_table; roff->name != NULL; roff++)
-                if (!strcmp(roff->name, name))
-                        return roff->offset;
-        return -EINVAL;
+	const struct pt_regs_offset *roff;
+
+	for (roff = regoffset_table; roff->name != NULL; roff++)
+		if (!strcmp(roff->name, name))
+			return roff->offset;
+
+	return -EINVAL;
 }
 
 #if defined(CONFIG_32BIT) || defined(CONFIG_MIPS32_O32)
@@ -937,7 +939,7 @@ static const struct user_regset mips_regsets[] = {
 		.n		= ELF_NGREG,
 		.size		= sizeof(unsigned int),
 		.align		= sizeof(unsigned int),
-		.regset_get		= gpr32_get,
+		.regset_get	= gpr32_get,
 		.set		= gpr32_set,
 	},
 	[REGSET_DSP] = {
@@ -945,7 +947,7 @@ static const struct user_regset mips_regsets[] = {
 		.n		= NUM_DSP_REGS + 1,
 		.size		= sizeof(u32),
 		.align		= sizeof(u32),
-		.regset_get		= dsp32_get,
+		.regset_get	= dsp32_get,
 		.set		= dsp32_set,
 		.active		= dsp_active,
 	},
@@ -955,7 +957,7 @@ static const struct user_regset mips_regsets[] = {
 		.n		= ELF_NFPREG,
 		.size		= sizeof(elf_fpreg_t),
 		.align		= sizeof(elf_fpreg_t),
-		.regset_get		= fpr_get,
+		.regset_get	= fpr_get,
 		.set		= fpr_set,
 	},
 	[REGSET_FP_MODE] = {
@@ -963,7 +965,7 @@ static const struct user_regset mips_regsets[] = {
 		.n		= 1,
 		.size		= sizeof(int),
 		.align		= sizeof(int),
-		.regset_get		= fp_mode_get,
+		.regset_get	= fp_mode_get,
 		.set		= fp_mode_set,
 	},
 #endif
@@ -973,7 +975,7 @@ static const struct user_regset mips_regsets[] = {
 		.n		= NUM_FPU_REGS + 1,
 		.size		= 16,
 		.align		= 16,
-		.regset_get		= msa_get,
+		.regset_get	= msa_get,
 		.set		= msa_set,
 	},
 #endif
@@ -997,7 +999,7 @@ static const struct user_regset mips64_regsets[] = {
 		.n		= ELF_NGREG,
 		.size		= sizeof(unsigned long),
 		.align		= sizeof(unsigned long),
-		.regset_get		= gpr64_get,
+		.regset_get	= gpr64_get,
 		.set		= gpr64_set,
 	},
 	[REGSET_DSP] = {
@@ -1005,7 +1007,7 @@ static const struct user_regset mips64_regsets[] = {
 		.n		= NUM_DSP_REGS + 1,
 		.size		= sizeof(u64),
 		.align		= sizeof(u64),
-		.regset_get		= dsp64_get,
+		.regset_get	= dsp64_get,
 		.set		= dsp64_set,
 		.active		= dsp_active,
 	},
@@ -1015,7 +1017,7 @@ static const struct user_regset mips64_regsets[] = {
 		.n		= 1,
 		.size		= sizeof(int),
 		.align		= sizeof(int),
-		.regset_get		= fp_mode_get,
+		.regset_get	= fp_mode_get,
 		.set		= fp_mode_set,
 	},
 	[REGSET_FPR] = {
@@ -1023,7 +1025,7 @@ static const struct user_regset mips64_regsets[] = {
 		.n		= ELF_NFPREG,
 		.size		= sizeof(elf_fpreg_t),
 		.align		= sizeof(elf_fpreg_t),
-		.regset_get		= fpr_get,
+		.regset_get	= fpr_get,
 		.set		= fpr_set,
 	},
 #endif
@@ -1033,7 +1035,7 @@ static const struct user_regset mips64_regsets[] = {
 		.n		= NUM_FPU_REGS + 1,
 		.size		= 16,
 		.align		= 16,
-		.regset_get		= msa_get,
+		.regset_get	= msa_get,
 		.set		= msa_set,
 	},
 #endif
@@ -1351,7 +1353,7 @@ asmlinkage long syscall_trace_enter(struct pt_regs *regs)
  */
 asmlinkage void syscall_trace_leave(struct pt_regs *regs)
 {
-        /*
+	/*
 	 * We may come here right after calling schedule_user()
 	 * or do_notify_resume(), in which case we can be in RCU
 	 * user mode.
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c
index cc26d56f3ab6..7b0e69af4097 100644
--- a/arch/mips/kernel/smp-cps.c
+++ b/arch/mips/kernel/smp-cps.c
@@ -236,6 +236,7 @@ static void __init cps_smp_setup(void)
 			/* Use the number of VPEs in cluster 0 core 0 for smp_num_siblings */
 			if (!cl && !c)
 				smp_num_siblings = core_vpes;
+			cpumask_set_cpu(nvpes, &__cpu_primary_thread_mask);
 
 			for (v = 0; v < min_t(int, core_vpes, NR_CPUS - nvpes); v++) {
 				cpu_set_cluster(&cpu_data[nvpes + v], cl);
@@ -368,6 +369,7 @@ static void __init cps_prepare_cpus(unsigned int max_cpus)
 	cl = cpu_cluster(&current_cpu_data);