ARM: remove sirf prima2/atlas platforms

The SiRF Prima2 and Atlas platform code was contributed by Cambridge
Silicon Radio (CSR) after aquiring the original SiRF company, and
maintained by Barry Song. CSR was subsequently acquired by Qualcomm,
who no longer have an interest in maintaining the SoC platform but
instead have released more recent SoCs for the same market in the
Snapdragon family.

As Barry is no longer working for the company, nobody else there
wants to maintain it, and there are no third-party users, the
best way forward seems to be to completely remove it.

Thanks to Barry for maintaining the platform for the past ten years.

Cc: Barry Song <baohua@kernel.org>
Link: https://lore.kernel.org/lkml/c969392572604b98bcb3be44048c3165@hisilicon.com/Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Documentation/devicetree/bindings/arm/sirf.yaml

-# SPDX-License-Identifier: GPL-2.0
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/arm/sirf.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: CSR SiRFprimaII and SiRFmarco device tree bindings.
-
-maintainers:
-  - Binghua Duan <binghua.duan@csr.com>
-  - Barry Song <Baohua.Song@csr.com>
-
-properties:
-  $nodename:
-    const: '/'
-  compatible:
-    oneOf:
-      - items:
-          - const: sirf,atlas6-cb
-          - const: sirf,atlas6
-      - items:
-          - const: sirf,atlas7-cb
-          - const: sirf,atlas7
-      - items:
-          - const: sirf,prima2-cb
-          - const: sirf,prima2
-
-additionalProperties: true
-
-...

Documentation/devicetree/bindings/reset/sirf,rstc.txt

-CSR SiRFSoC Reset Controller
-======================================
-
-Please also refer to reset.txt in this directory for common reset
-controller binding usage.
-
-Required properties:
-- compatible: Should be "sirf,prima2-rstc" or "sirf,marco-rstc"
-- reg: should be register base and length as documented in the
-  datasheet
-- #reset-cells: 1, see below
-
-example:
-
-rstc: reset-controller@88010000 {
-	compatible = "sirf,prima2-rstc";
-	reg = <0x88010000 0x1000>;
-	#reset-cells = <1>;
-};
-
-Specifying reset lines connected to IP modules
-==============================================
-
-The reset controller(rstc) manages various reset sources. This module provides
-reset signals for most blocks in system. Those device nodes should specify the
-reset line on the rstc in their resets property, containing a phandle to the
-rstc device node and a RESET_INDEX specifying which module to reset, as described
-in reset.txt.
-
-For SiRFSoC, RESET_INDEX is just reset_bit defined in SW_RST0 and SW_RST1 registers.
-For modules whose rest_bit is in SW_RST0, its RESET_INDEX is 0~31. For modules whose
-rest_bit is in SW_RST1, its RESET_INDEX is 32~63.
-
-example:
-
-vpp@90020000 {
-	compatible = "sirf,prima2-vpp";
-	reg = <0x90020000 0x10000>;
-	interrupts = <31>;
-	clocks = <&clks 35>;
-	resets = <&rstc 6>;
-};

MAINTAINERS

@@ -1779,19 +1779,6 @@ F:	drivers/net/ethernet/cortina/
 F:	drivers/pinctrl/pinctrl-gemini.c
 F:	drivers/rtc/rtc-ftrtc010.c
 
-ARM/CSR SIRFPRIMA2 MACHINE SUPPORT
-M:	Barry Song <baohua@kernel.org>
-L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
-S:	Maintained
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/baohua/linux.git
-F:	arch/arm/boot/dts/prima2*
-F:	arch/arm/mach-prima2/
-F:	drivers/clk/sirf/
-F:	drivers/clocksource/timer-atlas7.c
-F:	drivers/clocksource/timer-prima2.c
-X:	drivers/gnss
-N:	[^a-z]sirf
-
 ARM/CZ.NIC TURRIS MOX SUPPORT
 M:	Marek Behun <marek.behun@nic.cz>
 S:	Maintained

arch/arm/Kconfig

@@ -671,8 +671,6 @@ source "arch/arm/mach-orion5x/Kconfig"
 
 source "arch/arm/mach-oxnas/Kconfig"
 
-source "arch/arm/mach-prima2/Kconfig"
-
 source "arch/arm/mach-pxa/Kconfig"
 source "arch/arm/plat-pxa/Kconfig"
 

arch/arm/Kconfig.debug

@@ -1142,32 +1142,6 @@ choice
 		  Say Y here if you want kernel low-level debugging support
 		  on Allwinner A31/A23 based platforms on the R_UART.
 
-	config DEBUG_SIRFPRIMA2_UART1
-		bool "Kernel low-level debugging messages via SiRFprimaII UART1"
-		depends on ARCH_PRIMA2
-		select DEBUG_SIRFSOC_UART
-		help
-		  Say Y here if you want the debug print routines to direct
-		  their output to the uart1 port on SiRFprimaII devices.
-
-	config DEBUG_SIRFATLAS7_UART0
-		bool "Kernel low-level debugging messages via SiRFatlas7 UART0"
-		depends on ARCH_ATLAS7
-		select DEBUG_SIRFSOC_UART
-		help
-		  Say Y here if you want the debug print routines to direct
-		  their output to the uart0 port on SiRFATLAS7 devices.The uart0
-		  is used on SiRFATLAS7 as a extra debug port.sometimes an extra
-		  debug port can be very useful.
-
-	config DEBUG_SIRFATLAS7_UART1
-		bool "Kernel low-level debugging messages via SiRFatlas7 UART1"
-		depends on ARCH_ATLAS7
-		select DEBUG_SIRFSOC_UART
-		help
-		  Say Y here if you want the debug print routines to direct
-		  their output to the uart1 port on SiRFATLAS7 devices.
-
 	config DEBUG_SPEAR3XX
 		bool "Kernel low-level debugging messages via ST SPEAr 3xx/6xx UART"
 		depends on ARCH_SPEAR3XX || ARCH_SPEAR6XX
@@ -1538,10 +1512,6 @@ config DEBUG_STM32_UART
 	bool
 	depends on ARCH_STM32
 
-config DEBUG_SIRFSOC_UART
-	bool
-	depends on ARCH_SIRF
-
 config DEBUG_UART_FLOW_CONTROL
 	bool "Enable flow control (CTS) for the debug UART"
 	depends on DEBUG_LL
@@ -1596,7 +1566,6 @@ config DEBUG_LL_INCLUDE
 	default "debug/renesas-scif.S" if DEBUG_RMOBILE_SCIFA4
 	default "debug/s3c24xx.S" if DEBUG_S3C24XX_UART || DEBUG_S3C64XX_UART
 	default "debug/s5pv210.S" if DEBUG_S5PV210_UART
-	default "debug/sirf.S" if DEBUG_SIRFSOC_UART
 	default "debug/sti.S" if DEBUG_STI_UART
 	default "debug/stm32.S" if DEBUG_STM32_UART
 	default "debug/tegra.S" if DEBUG_TEGRA_UART
@@ -1648,8 +1617,6 @@ config DEBUG_UART_PHYS
 	default 0x1600d000 if DEBUG_SD5203_UART
 	default 0x18000300 if DEBUG_BCM_5301X
 	default 0x18000400 if DEBUG_BCM_HR2
-	default 0x18010000 if DEBUG_SIRFATLAS7_UART0
-	default 0x18020000 if DEBUG_SIRFATLAS7_UART1
 	default 0x18023000 if DEBUG_BCM_IPROC_UART3
 	default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
 	default 0x20001000 if DEBUG_HIP01_UART
@@ -1695,7 +1662,6 @@ config DEBUG_UART_PHYS
 	default 0x80074000 if DEBUG_IMX28_UART
 	default 0x808c0000 if DEBUG_EP93XX || ARCH_EP93XX
 	default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
-	default 0xb0060000 if DEBUG_SIRFPRIMA2_UART1
 	default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX
 	default 0xc0013000 if DEBUG_U300_UART
 	default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
@@ -1754,7 +1720,7 @@ config DEBUG_UART_PHYS
 		DEBUG_RMOBILE_SCIFA4 || DEBUG_S3C24XX_UART || \
 		DEBUG_S3C64XX_UART || \
 		DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
-		DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0 || \
+		DEBUG_DIGICOLOR_UA0 || \
 		DEBUG_AT91_UART || DEBUG_STM32_UART
 
 config DEBUG_UART_VIRT
@@ -1836,10 +1802,7 @@ config DEBUG_UART_VIRT
 	default 0xfec03000 if DEBUG_SOCFPGA_CYCLONE5_UART1
 	default 0xfec12000 if DEBUG_MVEBU_UART0 || DEBUG_MVEBU_UART0_ALTERNATE
 	default 0xfec12100 if DEBUG_MVEBU_UART1_ALTERNATE
-	default 0xfec10000 if DEBUG_SIRFATLAS7_UART0
 	default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0
-	default 0xfec20000 if DEBUG_SIRFATLAS7_UART1
-	default 0xfec60000 if DEBUG_SIRFPRIMA2_UART1
 	default 0xfec90000 if DEBUG_RK32_UART2
 	default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1
 	default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2 || DEBUG_SD5203_UART
@@ -1863,7 +1826,7 @@ config DEBUG_UART_VIRT
 		DEBUG_QCOM_UARTDM || DEBUG_S3C24XX_UART || \
 		DEBUG_S3C64XX_UART || \
 		DEBUG_BCM63XX_UART || DEBUG_ASM9260_UART || \
-		DEBUG_SIRFSOC_UART || DEBUG_DIGICOLOR_UA0 || \
+		DEBUG_DIGICOLOR_UA0 || \
 		DEBUG_AT91_UART || DEBUG_STM32_UART
 
 config DEBUG_UART_8250_SHIFT

arch/arm/Makefile

@@ -209,7 +209,6 @@ machine-$(CONFIG_PLAT_SAMSUNG)		+= s3c
 machine-$(CONFIG_ARCH_S5PV210)		+= s5pv210
 machine-$(CONFIG_ARCH_SA1100)		+= sa1100
 machine-$(CONFIG_ARCH_RENESAS)	 	+= shmobile
-machine-$(CONFIG_ARCH_SIRF)		+= prima2
 machine-$(CONFIG_ARCH_SOCFPGA)		+= socfpga
 machine-$(CONFIG_ARCH_STI)		+= sti
 machine-$(CONFIG_ARCH_STM32)		+= stm32

arch/arm/boot/dts/Makefile

@@ -74,10 +74,6 @@ dtb-$(CONFIG_SOC_SAM_V7) += \
 	at91-sama5d4_xplained.dtb \
 	at91-sama5d4ek.dtb \
 	at91-vinco.dtb
-dtb-$(CONFIG_ARCH_ATLAS6) += \
-	atlas6-evb.dtb
-dtb-$(CONFIG_ARCH_ATLAS7) += \
-	atlas7-evb.dtb
 dtb-$(CONFIG_ARCH_AXXIA) += \
 	axm5516-amarillo.dtb
 dtb-$(CONFIG_ARCH_BCM2835) += \
@@ -886,8 +882,6 @@ dtb-$(CONFIG_ARCH_ACTIONS) += \
 	owl-s500-labrador-base-m.dtb \
 	owl-s500-roseapplepi.dtb \
 	owl-s500-sparky.dtb
-dtb-$(CONFIG_ARCH_PRIMA2) += \
-	prima2-evb.dtb
 dtb-$(CONFIG_ARCH_PXA) += \
 	pxa300-raumfeld-connector.dtb \
 	pxa300-raumfeld-controller.dtb \

arch/arm/boot/dts/atlas6-evb.dts

-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * DTS file for CSR SiRFatlas6 Evaluation Board
- *
- * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-/dts-v1/;
-
-/include/ "atlas6.dtsi"
-
-/ {
-	model = "CSR SiRFatlas6 Evaluation Board";
-	compatible = "sirf,atlas6-cb", "sirf,atlas6";
-
-	memory {
-		device_type = "memory";
-		reg = <0x00000000 0x20000000>;
-	};
-
-	axi {
-		peri-iobg {
-			uart@b0060000 {
-				pinctrl-names = "default";
-				pinctrl-0 = <&uart1_pins_a>;
-			};
-			spi@b00d0000 {
-				status = "okay";
-				pinctrl-names = "default";
-				pinctrl-0 = <&spi0_pins_a>;
-				spi@0 {
-					compatible = "spidev";
-					reg = <0>;
-					spi-max-frequency = <1000000>;
-				};
-			};
-			spi@b0170000 {
-				pinctrl-names = "default";
-				pinctrl-0 = <&spi1_pins_a>;
-			};
-			i2c0: i2c@b00e0000 {
-				status = "okay";
-				pinctrl-names = "default";
-				pinctrl-0 = <&i2c0_pins_a>;
-				lcd@40 {
-					compatible = "sirf,lcd";
-					reg = <0x40>;
-				};
-			};
-
-		};
-		disp-iobg {
-			lcd@90010000 {
-				status = "okay";
-				pinctrl-names = "default";
-				pinctrl-0 = <&lcd_24pins_a>;
-			};
-		};
-	};
-	display: display@0 {
-	    panels {
-		panel0: panel@0 {
-			panel-name = "Innolux TFT";
-			hactive = <800>;
-			vactive = <480>;
-			left_margin = <20>;
-			right_margin = <234>;
-			upper_margin = <3>;
-			lower_margin = <41>;
-			hsync_len = <3>;
-			vsync_len = <2>;
-			pixclock = <33264000>;
-			sync = <3>;
-			timing = <0x88>;
-			};
-	    };
-	};
-};

arch/arm/boot/dts/atlas7-evb.dts

-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * DTS file for CSR SiRFatlas7 Evaluation Board
- *
- * Copyright (c) 2014 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-/dts-v1/;
-
-/include/ "atlas7.dtsi"
-
-#include <dt-bindings/input/input.h>
-#include <dt-bindings/gpio/gpio.h>
-
-/ {
-	model = "CSR SiRFatlas7 Evaluation Board";
-	compatible = "sirf,atlas7-cb", "sirf,atlas7";
-
-	chosen {
-		bootargs = "console=ttySiRF1,115200 earlyprintk";
-	};
-
-	memory {
-		device_type = "memory";
-		reg = <0x40000000 0x20000000>;
-	};
-
-	reserved-memory {
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges;
-
-		vpp_reserved: vpp_mem@5e800000 {
-			compatible = "sirf,reserved-memory";
-			reg = <0x5e800000 0x800000>;
-		};
-
-		nanddisk_reserved: nanddisk@46000000 {
-			reg = <0x46000000 0x200000>;
-			no-map;
-		};
-	};
-
-
-	noc {
-		mediam {
-			nand@17050000 {
-				memory-region = <&nanddisk_reserved>;
-			};
-		};
-
-		gnssm {
-			spi1: spi@18200000 {
-				status = "okay";
-				spiflash: macronix@0{
-					status = "okay";
-					compatible = "macronix,mx25l6405d";
-					reg = <0>;
-					spi-max-frequency = <37500000>;
-					spi-cpha;
-					spi-cpol;
-					#address-cells = <1>;
-					#size-cells = <1>;
-					partitions@0 {
-						label = "myspiboot";
-						reg = <0x0 0x800000>;
-					};
-				};
-			};
-		};
-
-		btm {
-			uart6: uart@11000000 {
-				status = "okay";
-				uart-has-rtscts;
-			};
-		};
-
-		disp-iobg {
-			vpp@13110000 {
-				memory-region = <&vpp_reserved>;
-			};
-		};
-
-		display0: display@0 {
-			compatible = "lvds-panel";
-			source = "lvds.0";
-
-			bl-gpios = <&gpio_1 63 0>;
-			data-lines  = <24>;
-
-			display-timings {
-				native-mode = <&timing0>;
-				timing0: timing0 {
-					clock-frequency = <60000000>;
-					hactive = <1024>;
-					vactive = <600>;
-					hfront-porch = <220>;
-					hback-porch = <100>;
-					hsync-len = <1>;
-					vback-porch = <10>;
-					vfront-porch = <25>;
-					vsync-len = <1>;
-					hsync-active = <0>;
-					vsync-active = <0>;
-					de-active = <1>;
-					pixelclk-active = <1>;
-				};
-			};
-		};
-
-		gpio_keys {
-			compatible = "gpio-keys";
-			status = "okay";
-			#address-cells = <1>;
-			#size-cells = <0>;
-
-			rearview_key {
-				label = "rearview key";
-				linux,code = <KEY_CAMERA>;
-				gpios = <&gpio_1 3 GPIO_ACTIVE_LOW>;
-				debounce-interval = <100>;
-			};
-		};
-
-	};
-};

arch/arm/boot/dts/prima2-evb.dts

-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * DTS file for CSR SiRFprimaII Evaluation Board
- *
- * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-/dts-v1/;
-
-/include/ "prima2.dtsi"
-
-/ {
-	model = "CSR SiRFprimaII Evaluation Board";
-	compatible = "sirf,prima2", "sirf,prima2-cb";
-
-	memory {
-		device_type = "memory";
-		reg = <0x00000000 0x20000000>;
-	};
-
-	axi {
-		peri-iobg {
-			uart@b0060000 {
-				pinctrl-names = "default";
-				pinctrl-0 = <&uart1_pins_a>;
-			};
-			spi@b00d0000 {
-				pinctrl-names = "default";
-				pinctrl-0 = <&spi0_pins_a>;
-			};
-			spi@b0170000 {
-				pinctrl-names = "default";
-				pinctrl-0 = <&spi1_pins_a>;
-			};
-		};
-	};
-};

arch/arm/configs/prima2_defconfig

-CONFIG_NO_HZ=y
-CONFIG_HIGH_RES_TIMERS=y
-CONFIG_RELAY=y
-CONFIG_BLK_DEV_INITRD=y
-CONFIG_KALLSYMS_ALL=y
-CONFIG_MODULES=y
-CONFIG_MODULE_UNLOAD=y
-# CONFIG_BLK_DEV_BSG is not set
-CONFIG_PARTITION_ADVANCED=y
-CONFIG_BSD_DISKLABEL=y
-CONFIG_SOLARIS_X86_PARTITION=y
-CONFIG_ARCH_SIRF=y
-CONFIG_SMP=y
-CONFIG_SCHED_MC=y
-CONFIG_PREEMPT=y
-CONFIG_AEABI=y
-CONFIG_KEXEC=y
-CONFIG_BINFMT_MISC=y
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_RAM=y
-CONFIG_BLK_DEV_RAM_SIZE=8192
-CONFIG_SCSI=y
-CONFIG_BLK_DEV_SD=y
-CONFIG_CHR_DEV_SG=y
-CONFIG_INPUT_EVDEV=y
-# CONFIG_INPUT_MOUSE is not set
-CONFIG_INPUT_TOUCHSCREEN=y
-CONFIG_INPUT_MISC=y
-CONFIG_SERIAL_SIRFSOC=y
-CONFIG_SERIAL_SIRFSOC_CONSOLE=y
-CONFIG_HW_RANDOM=y
-CONFIG_I2C=y
-CONFIG_I2C_CHARDEV=y
-CONFIG_I2C_SIRF=y
-CONFIG_SPI=y
-CONFIG_SPI_SIRF=y
-CONFIG_SPI_SPIDEV=y
-# CONFIG_HWMON is not set
-CONFIG_WATCHDOG=y
-CONFIG_USB_GADGET=y
-CONFIG_USB_MASS_STORAGE=m
-CONFIG_MMC=y
-CONFIG_MMC_SDHCI=y
-CONFIG_MMC_SDHCI_PLTFM=y
-CONFIG_MMC_SDHCI_SIRF=y
-CONFIG_RTC_CLASS=y
-CONFIG_RTC_DRV_SIRFSOC=y
-CONFIG_DMADEVICES=y
-CONFIG_DMADEVICES_DEBUG=y
-CONFIG_DMADEVICES_VDEBUG=y
-CONFIG_SIRF_DMA=y
-CONFIG_HWSPINLOCK_SIRF=y
-# CONFIG_IOMMU_SUPPORT is not set
-CONFIG_EXT2_FS=y
-CONFIG_MSDOS_FS=y
-CONFIG_VFAT_FS=y
-CONFIG_TMPFS=y
-CONFIG_TMPFS_POSIX_ACL=y
-CONFIG_CRAMFS=y
-CONFIG_ROMFS_FS=y
-CONFIG_NLS_CODEPAGE_437=y
-CONFIG_NLS_ASCII=y
-CONFIG_NLS_ISO8859_1=y
-CONFIG_DEBUG_INFO=y
-CONFIG_DEBUG_SECTION_MISMATCH=y
-CONFIG_MAGIC_SYSRQ=y
-CONFIG_DEBUG_KERNEL=y
-# CONFIG_DEBUG_PREEMPT is not set
-CONFIG_DEBUG_RT_MUTEXES=y
-CONFIG_DEBUG_SPINLOCK=y
-CONFIG_DEBUG_MUTEXES=y
-CONFIG_CRC_CCITT=y

arch/arm/include/debug/sirf.S

-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * arch/arm/mach-prima2/include/mach/debug-macro.S
- *
- * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-#define SIRF_LLUART_TXFIFO_STATUS	0x0114
-#define SIRF_LLUART_TXFIFO_DATA	0x0118
-
-#define SIRF_LLUART_TXFIFO_FULL                       (1 << 5)
-
-#ifdef CONFIG_DEBUG_SIRFATLAS7_UART0
-#define SIRF_LLUART_TXFIFO_EMPTY			(1 << 8)
-#else
-#define SIRF_LLUART_TXFIFO_EMPTY			(1 << 6)
-#endif
-
-
-	.macro	addruart, rp, rv, tmp
-	ldr	\rp, =CONFIG_DEBUG_UART_PHYS		@ physical
-	ldr	\rv, =CONFIG_DEBUG_UART_VIRT		@ virtual
-	.endm
-
-	.macro	senduart,rd,rx
-	str	\rd, [\rx, #SIRF_LLUART_TXFIFO_DATA]
-	.endm
-
-	.macro	busyuart,rd,rx
-	.endm
-
-	.macro	waituartcts,rd,rx
-	.endm
-
-	.macro	waituarttxrdy,rd,rx
-1001:	ldr	\rd, [\rx, #SIRF_LLUART_TXFIFO_STATUS]
-	tst	\rd, #SIRF_LLUART_TXFIFO_EMPTY
-	beq	1001b
-	.endm
-

arch/arm/mach-prima2/Kconfig

-# SPDX-License-Identifier: GPL-2.0-only
-menuconfig ARCH_SIRF
-	bool "CSR SiRF"
-	depends on ARCH_MULTI_V7
-	select ARCH_HAS_RESET_CONTROLLER
-	select RESET_CONTROLLER
-	select GENERIC_IRQ_CHIP
-	select GPIOLIB
-	select NO_IOPORT_MAP
-	select REGMAP
-	select PINCTRL
-	select PINCTRL_SIRF
-	help
-	  Support for CSR SiRFprimaII/Marco/Polo platforms
-
-if ARCH_SIRF
-
-comment "CSR SiRF atlas6/primaII/Atlas7 Specific Features"
-
-config ARCH_ATLAS6
-	bool "CSR SiRFSoC ATLAS6 ARM Cortex A9 Platform"
-	default y
-	select SIRF_IRQ
-	help
-          Support for CSR SiRFSoC ARM Cortex A9 Platform
-
-config ARCH_ATLAS7
-	bool "CSR SiRFSoC ATLAS7 ARM Cortex A7 Platform"
-	default y
-	select ARM_GIC
-	select ATLAS7_TIMER
-	select HAVE_ARM_SCU if SMP
-	help
-          Support for CSR SiRFSoC ARM Cortex A7 Platform
-
-config ARCH_PRIMA2
-	bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform"
-	default y
-	select SIRF_IRQ
-	select ZONE_DMA
-	select PRIMA2_TIMER
-	help
-          Support for CSR SiRFSoC ARM Cortex A9 Platform
-
-config SIRF_IRQ
-	bool
-
-endif

arch/arm/mach-prima2/Makefile

-# SPDX-License-Identifier: GPL-2.0
-obj-y += rstc.o
-obj-y += common.o
-obj-y += rtciobrg.o
-obj-$(CONFIG_SUSPEND) += pm.o sleep.o
-obj-$(CONFIG_SMP) += platsmp.o headsmp.o
-obj-$(CONFIG_HOTPLUG_CPU)  += hotplug.o
-
-CFLAGS_hotplug.o += -march=armv7-a

arch/arm/mach-prima2/common.c

-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Defines machines for CSR SiRFprimaII
- *
- * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sizes.h>
-#include <asm/mach-types.h>
-#include <asm/mach/arch.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-#include "common.h"
-
-static void __init __maybe_unused sirfsoc_init_late(void)
-{
-	sirfsoc_pm_init();
-}
-
-#ifdef CONFIG_ARCH_ATLAS6
-static const char *const atlas6_dt_match[] __initconst = {
-	"sirf,atlas6",
-	NULL
-};
-
-DT_MACHINE_START(ATLAS6_DT, "Generic ATLAS6 (Flattened Device Tree)")
-	/* Maintainer: Barry Song <baohua.song@csr.com> */
-	.l2c_aux_val	= 0,
-	.l2c_aux_mask	= ~0,
-	.init_late	= sirfsoc_init_late,
-	.dt_compat      = atlas6_dt_match,
-MACHINE_END
-#endif
-
-#ifdef CONFIG_ARCH_PRIMA2
-static const char *const prima2_dt_match[] __initconst = {
-	"sirf,prima2",
-	NULL
-};
-
-DT_MACHINE_START(PRIMA2_DT, "Generic PRIMA2 (Flattened Device Tree)")
-	/* Maintainer: Barry Song <baohua.song@csr.com> */
-	.l2c_aux_val	= 0,
-	.l2c_aux_mask	= ~0,
-	.dma_zone_size	= SZ_256M,
-	.init_late	= sirfsoc_init_late,
-	.dt_compat      = prima2_dt_match,
-MACHINE_END
-#endif
-
-#ifdef CONFIG_ARCH_ATLAS7
-static const char *const atlas7_dt_match[] __initconst = {
-	"sirf,atlas7",
-	NULL
-};
-
-DT_MACHINE_START(ATLAS7_DT, "Generic ATLAS7 (Flattened Device Tree)")
-	/* Maintainer: Barry Song <baohua.song@csr.com> */
-	.smp            = smp_ops(sirfsoc_smp_ops),
-	.dt_compat      = atlas7_dt_match,
-MACHINE_END
-#endif

arch/arm/mach-prima2/common.h

-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * This file contains common function prototypes to avoid externs in the c files.
- *
- * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-#ifndef __MACH_PRIMA2_COMMON_H__
-#define __MACH_PRIMA2_COMMON_H__
-
-#include <linux/init.h>
-#include <linux/reboot.h>
-
-#include <asm/mach/time.h>
-#include <asm/exception.h>
-
-extern volatile int prima2_pen_release;
-
-extern const struct smp_operations sirfsoc_smp_ops;
-extern void sirfsoc_secondary_startup(void);
-extern void sirfsoc_cpu_die(unsigned int cpu);
-
-extern void __init sirfsoc_of_irq_init(void);
-extern asmlinkage void __exception_irq_entry sirfsoc_handle_irq(struct pt_regs *regs);
-
-#ifdef CONFIG_SUSPEND
-extern int sirfsoc_pm_init(void);
-#else
-static inline int sirfsoc_pm_init(void) { return 0; }
-#endif
-
-#endif

arch/arm/mach-prima2/headsmp.S

-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Entry of the second core for CSR Marco dual-core SMP SoCs
- *
- * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-#include <linux/linkage.h>
-#include <linux/init.h>
-
-/*
- * SIRFSOC specific entry point for secondary CPUs.  This provides
- * a "holding pen" into which all secondary cores are held until we're
- * ready for them to initialise.
- */
-ENTRY(sirfsoc_secondary_startup)
-        mrc     p15, 0, r0, c0, c0, 5
-        and     r0, r0, #15
-        adr     r4, 1f
-        ldmia   r4, {r5, r6}
-        sub     r4, r4, r5
-        add     r6, r6, r4
-pen:    ldr     r7, [r6]
-        cmp     r7, r0
-        bne     pen
-
-        /*
-         * we've been released from the holding pen: secondary_stack
-         * should now contain the SVC stack for this core
-         */
-        b       secondary_startup
-ENDPROC(sirfsoc_secondary_startup)
-
-        .align
-1:      .long   .
-        .long   prima2_pen_release

arch/arm/mach-prima2/hotplug.c

-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * CPU hotplug support for CSR Marco dual-core SMP SoCs
- *
- * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/smp.h>
-
-#include <asm/smp_plat.h>
-#include "common.h"
-
-static inline void platform_do_lowpower(unsigned int cpu)
-{
-	/* we put the platform to just WFI */
-	for (;;) {
-		__asm__ __volatile__("dsb\n\t" "wfi\n\t"
-			: : : "memory");
-		if (prima2_pen_release == cpu_logical_map(cpu)) {
-			/*
-			 * OK, proper wakeup, we're done
-			 */
-			break;
-		}
-	}
-}
-
-/*
- * platform-specific code to shutdown a CPU
- *
- * Called with IRQs disabled
- */
-void sirfsoc_cpu_die(unsigned int cpu)
-{
-	platform_do_lowpower(cpu);
-}

arch/arm/mach-prima2/platsmp.c

-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * plat smp support for CSR Marco dual-core SMP SoCs
- *
- * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/delay.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <asm/page.h>
-#include <asm/mach/map.h>
-#include <asm/smp_plat.h>
-#include <asm/smp_scu.h>
-#include <asm/cacheflush.h>
-#include <asm/cputype.h>
-
-#include "common.h"
-
-static void __iomem *clk_base;
-
-static DEFINE_SPINLOCK(boot_lock);
-
-/* XXX prima2_pen_release is cargo culted code - DO NOT COPY XXX */
-volatile int prima2_pen_release = -1;
-
-static void sirfsoc_secondary_init(unsigned int cpu)
-{
-	/*
-	 * let the primary processor know we're out of the
-	 * pen, then head off into the C entry point
-	 */
-	prima2_pen_release = -1;
-	smp_wmb();
-
-	/*
-	 * Synchronise with the boot thread.
-	 */
-	spin_lock(&boot_lock);
-	spin_unlock(&boot_lock);
-}
-
-static const struct of_device_id clk_ids[]  = {
-	{ .compatible = "sirf,atlas7-clkc" },
-	{},
-};
-
-static int sirfsoc_boot_secondary(unsigned int cpu, struct task_struct *idle)
-{
-	unsigned long timeout;
-	struct device_node *np;
-
-	np = of_find_matching_node(NULL, clk_ids);
-	if (!np)
-		return -ENODEV;
-
-	clk_base = of_iomap(np, 0);
-	if (!clk_base)
-		return -ENOMEM;
-
-	/*
-	 * write the address of secondary startup into the clkc register
-	 * at offset 0x2bC, then write the magic number 0x3CAF5D62 to the
-	 * clkc register at offset 0x2b8, which is what boot rom code is
-	 * waiting for. This would wake up the secondary core from WFE
-	 */
-#define SIRFSOC_CPU1_JUMPADDR_OFFSET 0x2bc
-	__raw_writel(__pa_symbol(sirfsoc_secondary_startup),
-		clk_base + SIRFSOC_CPU1_JUMPADDR_OFFSET);
-
-#define SIRFSOC_CPU1_WAKEMAGIC_OFFSET 0x2b8
-	__raw_writel(0x3CAF5D62,
-		clk_base + SIRFSOC_CPU1_WAKEMAGIC_OFFSET);
-
-	/* make sure write buffer is drained */
-	mb();
-
-	spin_lock(&boot_lock);
-
-	/*
-	 * The secondary processor is waiting to be released from
-	 * the holding pen - release it, then wait for it to flag
-	 * that it has been released by resetting prima2_pen_release.
-	 *
-	 * Note that "prima2_pen_release" is the hardware CPU ID, whereas
-	 * "cpu" is Linux's internal ID.
-	 */
-	prima2_pen_release = cpu_logical_map(cpu);
-	sync_cache_w(&prima2_pen_release);
-
-	/*
-	 * Send the secondary CPU SEV, thereby causing the boot monitor to read
-	 * the JUMPADDR and WAKEMAGIC, and branch to the address found there.
-	 */
-	dsb_sev();
-
-	timeout = jiffies + (1 * HZ);
-	while (time_before(jiffies, timeout)) {
-		smp_rmb();
-		if (prima2_pen_release == -1)
-			break;
-
-		udelay(10);
-	}
-
-	/*
-	 * now the secondary core is starting up let it run its
-	 * calibrations, then wait for it to finish
-	 */
-	spin_unlock(&boot_lock);
-
-	return prima2_pen_release != -1 ? -ENOSYS : 0;
-}
-
-const struct smp_operations sirfsoc_smp_ops __initconst = {
-	.smp_secondary_init     = sirfsoc_secondary_init,
-	.smp_boot_secondary     = sirfsoc_boot_secondary,
-#ifdef CONFIG_HOTPLUG_CPU
-	.cpu_die                = sirfsoc_cpu_die,
-#endif
-};

arch/arm/mach-prima2/pm.c

-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * power management entry for CSR SiRFprimaII
- *
- * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-#include <linux/kernel.h>
-#include <linux/suspend.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
-#include <linux/of_platform.h>
-#include <linux/io.h>
-#include <linux/rtc/sirfsoc_rtciobrg.h>
-#include <asm/outercache.h>
-#include <asm/suspend.h>
-#include <asm/hardware/cache-l2x0.h>
-
-#include "pm.h"
-
-/*
- * suspend asm codes will access these to make DRAM become self-refresh and
- * system sleep
- */
-u32 sirfsoc_pwrc_base;
-void __iomem *sirfsoc_memc_base;
-
-static void sirfsoc_set_wakeup_source(void)
-{
-	u32 pwr_trigger_en_reg;
-	pwr_trigger_en_reg = sirfsoc_rtc_iobrg_readl(sirfsoc_pwrc_base +
-		SIRFSOC_PWRC_TRIGGER_EN);
-#define X_ON_KEY_B (1 << 0)
-#define RTC_ALARM0_B (1 << 2)
-#define RTC_ALARM1_B (1 << 3)
-	sirfsoc_rtc_iobrg_writel(pwr_trigger_en_reg | X_ON_KEY_B |
-		RTC_ALARM0_B | RTC_ALARM1_B,
-		sirfsoc_pwrc_base + SIRFSOC_PWRC_TRIGGER_EN);
-}
-
-static void sirfsoc_set_sleep_mode(u32 mode)
-{
-	u32 sleep_mode = sirfsoc_rtc_iobrg_readl(sirfsoc_pwrc_base +
-		SIRFSOC_PWRC_PDN_CTRL);
-	sleep_mode &= ~(SIRFSOC_SLEEP_MODE_MASK << 1);
-	sleep_mode |= mode << 1;
-	sirfsoc_rtc_iobrg_writel(sleep_mode, sirfsoc_pwrc_base +
-		SIRFSOC_PWRC_PDN_CTRL);
-}
-
-static int sirfsoc_pre_suspend_power_off(void)
-{
-	u32 wakeup_entry = __pa_symbol(cpu_resume);
-
-	sirfsoc_rtc_iobrg_writel(wakeup_entry, sirfsoc_pwrc_base +
-		SIRFSOC_PWRC_SCRATCH_PAD1);
-
-	sirfsoc_set_wakeup_source();
-
-	sirfsoc_set_sleep_mode(SIRFSOC_DEEP_SLEEP_MODE);
-
-	return 0;
-}
-
-static int sirfsoc_pm_enter(suspend_state_t state)
-{
-	switch (state) {
-	case PM_SUSPEND_MEM:
-		sirfsoc_pre_suspend_power_off();
-
-		outer_disable();
-		/* go zzz */
-		cpu_suspend(0, sirfsoc_finish_suspend);
-		outer_resume();
-		break;
-	default:
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static const struct platform_suspend_ops sirfsoc_pm_ops = {
-	.enter = sirfsoc_pm_enter,
-	.valid = suspend_valid_only_mem,
-};
-
-static const struct of_device_id pwrc_ids[] = {
-	{ .compatible = "sirf,prima2-pwrc" },
-	{}
-};
-
-static int __init sirfsoc_of_pwrc_init(void)
-{
-	struct device_node *np;
-
-	np = of_find_matching_node(NULL, pwrc_ids);
-	if (!np) {
-		pr_err("unable to find compatible sirf pwrc node in dtb\n");
-		return -ENOENT;
-	}
-
-	/*
-	 * pwrc behind rtciobrg is not located in memory space
-	 * though the property is named reg. reg only means base
-	 * offset for pwrc. then of_iomap is not suitable here.
-	 */
-	if (of_property_read_u32(np, "reg", &sirfsoc_pwrc_base))
-		panic("unable to find base address of pwrc node in dtb\n");
-
-	of_node_put(np);
-
-	return 0;
-}
-
-static const struct of_device_id memc_ids[] = {
-	{ .compatible = "sirf,prima2-memc" },
-	{}
-};
-
-static int sirfsoc_memc_probe(struct platform_device *op)
-{
-	struct device_node *np = op->dev.of_node;
-
-	sirfsoc_memc_base = of_iomap(np, 0);
-	if (!sirfsoc_memc_base)
-		panic("unable to map memc registers\n");
-
-	return 0;
-}
-
-static struct platform_driver sirfsoc_memc_driver = {
-	.probe		= sirfsoc_memc_probe,
-	.driver = {
-		.name = "sirfsoc-memc",
-		.of_match_table	= memc_ids,
-	},
-};
-
-static int __init sirfsoc_memc_init(void)
-{
-	return platform_driver_register(&sirfsoc_memc_driver);
-}
-
-int __init sirfsoc_pm_init(void)
-{
-	sirfsoc_of_pwrc_init();
-	sirfsoc_memc_init();
-	suspend_set_ops(&sirfsoc_pm_ops);
-	return 0;
-}

arch/arm/mach-prima2/pm.h

-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * arch/arm/mach-prima2/pm.h
- *
- * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-#ifndef _MACH_PRIMA2_PM_H_
-#define _MACH_PRIMA2_PM_H_
-
-#define SIRFSOC_PWR_SLEEPFORCE		0x01
-
-#define SIRFSOC_SLEEP_MODE_MASK         0x3
-#define SIRFSOC_DEEP_SLEEP_MODE         0x1
-
-#define SIRFSOC_PWRC_PDN_CTRL           0x0
-#define SIRFSOC_PWRC_PON_OFF            0x4
-#define SIRFSOC_PWRC_TRIGGER_EN         0x8
-#define SIRFSOC_PWRC_PIN_STATUS         0x14
-#define SIRFSOC_PWRC_SCRATCH_PAD1       0x18
-#define SIRFSOC_PWRC_SCRATCH_PAD2       0x1C
-
-#ifndef __ASSEMBLY__
-extern int sirfsoc_finish_suspend(unsigned long);
-#endif
-
-#endif
-

arch/arm/mach-prima2/rstc.c

-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * reset controller for CSR SiRFprimaII
- *
- * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-#include <linux/kernel.h>
-#include <linux/mutex.h>
-#include <linux/io.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/platform_device.h>
-#include <linux/reboot.h>
-#include <linux/reset-controller.h>
-
-#include <asm/system_misc.h>
-
-#define SIRFSOC_RSTBIT_NUM	64
-
-static void __iomem *sirfsoc_rstc_base;
-static DEFINE_MUTEX(rstc_lock);
-
-static int sirfsoc_reset_module(struct reset_controller_dev *rcdev,
-					unsigned long sw_reset_idx)
-{
-	u32 reset_bit = sw_reset_idx;
-
-	if (reset_bit >= SIRFSOC_RSTBIT_NUM)
-		return -EINVAL;
-
-	mutex_lock(&rstc_lock);
-
-	/*
-	 * Writing 1 to this bit resets corresponding block.
-	 * Writing 0 to this bit de-asserts reset signal of the
-	 * corresponding block. datasheet doesn't require explicit
-	 * delay between the set and clear of reset bit. it could
-	 * be shorter if tests pass.
-	 */
-	writel(readl(sirfsoc_rstc_base +
-			(reset_bit / 32) * 4) | (1 << reset_bit),
-		sirfsoc_rstc_base + (reset_bit / 32) * 4);
-	msleep(20);
-	writel(readl(sirfsoc_rstc_base +
-			(reset_bit / 32) * 4) & ~(1 << reset_bit),
-		sirfsoc_rstc_base + (reset_bit / 32) * 4);
-
-	mutex_unlock(&rstc_lock);
-
-	return 0;
-}
-
-static struct reset_control_ops sirfsoc_rstc_ops = {
-	.reset = sirfsoc_reset_module,
-};
-
-static struct reset_controller_dev sirfsoc_reset_controller = {
-	.ops = &sirfsoc_rstc_ops,
-	.nr_resets = SIRFSOC_RSTBIT_NUM,
-};
-
-#define SIRFSOC_SYS_RST_BIT  BIT(31)
-
-static void sirfsoc_restart(enum reboot_mode mode, const char *cmd)
-{
-	writel(SIRFSOC_SYS_RST_BIT, sirfsoc_rstc_base);
-}
-
-static int sirfsoc_rstc_probe(struct platform_device *pdev)
-{
-	struct device_node *np = pdev->dev.of_node;
-	sirfsoc_rstc_base = of_iomap(np, 0);
-	if (!sirfsoc_rstc_base) {
-		dev_err(&pdev->dev, "unable to map rstc cpu registers\n");
-		return -ENOMEM;
-	}
-
-	sirfsoc_reset_controller.of_node = np;
-	arm_pm_restart = sirfsoc_restart;
-
-	if (IS_ENABLED(CONFIG_RESET_CONTROLLER))
-		reset_controller_register(&sirfsoc_reset_controller);
-
-	return 0;
-}
-
-static const struct of_device_id rstc_ids[]  = {
-	{ .compatible = "sirf,prima2-rstc" },
-	{},
-};
-
-static struct platform_driver sirfsoc_rstc_driver = {
-	.probe		= sirfsoc_rstc_probe,
-	.driver		= {
-		.name	= "sirfsoc_rstc",
-		.of_match_table = rstc_ids,
-	},
-};
-
-static int __init sirfsoc_rstc_init(void)
-{
-	return platform_driver_register(&sirfsoc_rstc_driver);
-}
-subsys_initcall(sirfsoc_rstc_init);

arch/arm/mach-prima2/rtciobrg.c

-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * RTC I/O Bridge interfaces for CSR SiRFprimaII/atlas7
- * ARM access the registers of SYSRTC, GPSRTC and PWRC through this module
- *
- * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/io.h>
-#include <linux/regmap.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
-#include <linux/of_platform.h>
-
-#define SIRFSOC_CPUIOBRG_CTRL           0x00
-#define SIRFSOC_CPUIOBRG_WRBE           0x04
-#define SIRFSOC_CPUIOBRG_ADDR           0x08
-#define SIRFSOC_CPUIOBRG_DATA           0x0c
-
-/*
- * suspend asm codes will access this address to make system deepsleep
- * after DRAM becomes self-refresh
- */
-void __iomem *sirfsoc_rtciobrg_base;
-static DEFINE_SPINLOCK(rtciobrg_lock);
-
-/*
- * symbols without lock are only used by suspend asm codes
- * and these symbols are not exported too
- */
-void sirfsoc_rtc_iobrg_wait_sync(void)
-{
-	while (readl_relaxed(sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_CTRL))
-		cpu_relax();
-}
-
-void sirfsoc_rtc_iobrg_besyncing(void)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&rtciobrg_lock, flags);
-
-	sirfsoc_rtc_iobrg_wait_sync();
-
-	spin_unlock_irqrestore(&rtciobrg_lock, flags);
-}
-EXPORT_SYMBOL_GPL(sirfsoc_rtc_iobrg_besyncing);
-
-u32 __sirfsoc_rtc_iobrg_readl(u32 addr)
-{
-	sirfsoc_rtc_iobrg_wait_sync();
-
-	writel_relaxed(0x00, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_WRBE);
-	writel_relaxed(addr, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_ADDR);
-	writel_relaxed(0x01, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_CTRL);
-
-	sirfsoc_rtc_iobrg_wait_sync();
-
-	return readl_relaxed(sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_DATA);
-}
-
-u32 sirfsoc_rtc_iobrg_readl(u32 addr)
-{
-	unsigned long flags, val;
-
-	/* TODO: add hwspinlock to sync with M3 */
-	spin_lock_irqsave(&rtciobrg_lock, flags);
-
-	val = __sirfsoc_rtc_iobrg_readl(addr);
-
-	spin_unlock_irqrestore(&rtciobrg_lock, flags);
-
-	return val;
-}
-EXPORT_SYMBOL_GPL(sirfsoc_rtc_iobrg_readl);
-
-void sirfsoc_rtc_iobrg_pre_writel(u32 val, u32 addr)
-{
-	sirfsoc_rtc_iobrg_wait_sync();
-
-	writel_relaxed(0xf1, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_WRBE);
-	writel_relaxed(addr, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_ADDR);
-
-	writel_relaxed(val, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_DATA);
-}
-
-void sirfsoc_rtc_iobrg_writel(u32 val, u32 addr)
-{
-	unsigned long flags;
-
-	 /* TODO: add hwspinlock to sync with M3 */
-	spin_lock_irqsave(&rtciobrg_lock, flags);
-
-	sirfsoc_rtc_iobrg_pre_writel(val, addr);
-
-	writel_relaxed(0x01, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_CTRL);
-
-	sirfsoc_rtc_iobrg_wait_sync();
-
-	spin_unlock_irqrestore(&rtciobrg_lock, flags);
-}
-EXPORT_SYMBOL_GPL(sirfsoc_rtc_iobrg_writel);
-
-
-static int regmap_iobg_regwrite(void *context, unsigned int reg,
-				   unsigned int val)
-{
-	sirfsoc_rtc_iobrg_writel(val, reg);
-	return 0;
-}
-
-static int regmap_iobg_regread(void *context, unsigned int reg,
-				  unsigned int *val)
-{
-	*val = (u32)sirfsoc_rtc_iobrg_readl(reg);
-	return 0;
-}
-
-static struct regmap_bus regmap_iobg = {
-	.reg_write = regmap_iobg_regwrite,
-	.reg_read = regmap_iobg_regread,
-};
-
-/**
- * devm_regmap_init_iobg(): Initialise managed register map
- *
- * @iobg: Device that will be interacted with
- * @config: Configuration for register map
- *
- * The return value will be an ERR_PTR() on error or a valid pointer
- * to a struct regmap.  The regmap will be automatically freed by the
- * device management code.
- */
-struct regmap *devm_regmap_init_iobg(struct device *dev,
-				    const struct regmap_config *config)
-{
-	const struct regmap_bus *bus = &regmap_iobg;
-
-	return devm_regmap_init(dev, bus, dev, config);
-}
-EXPORT_SYMBOL_GPL(devm_regmap_init_iobg);
-
-static const struct of_device_id rtciobrg_ids[] = {
-	{ .compatible = "sirf,prima2-rtciobg" },
-	{}
-};
-
-static int sirfsoc_rtciobrg_probe(struct platform_device *op)
-{
-	struct device_node *np = op->dev.of_node;
-
-	sirfsoc_rtciobrg_base = of_iomap(np, 0);
-	if (!sirfsoc_rtciobrg_base)
-		panic("unable to map rtc iobrg registers\n");
-
-	return 0;
-}
-
-static struct platform_driver sirfsoc_rtciobrg_driver = {
-	.probe		= sirfsoc_rtciobrg_probe,
-	.driver = {
-		.name = "sirfsoc-rtciobrg",
-		.of_match_table	= rtciobrg_ids,
-	},
-};
-
-static int __init sirfsoc_rtciobrg_init(void)
-{
-	return platform_driver_register(&sirfsoc_rtciobrg_driver);
-}
-postcore_initcall(sirfsoc_rtciobrg_init);
-
-MODULE_AUTHOR("Zhiwu Song <zhiwu.song@csr.com>");
-MODULE_AUTHOR("Barry Song <baohua.song@csr.com>");
-MODULE_DESCRIPTION("CSR SiRFprimaII rtc io bridge");
-MODULE_LICENSE("GPL v2");