Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

5a7d8a28 · Linus Torvalds <[email protected]> · 2013-09-12 16:14:49 -07:00

Pull MIPS updates from Ralf Baechle:
 "This has been sitting in -next for a while with no objections and all
  MIPS defconfigs except one are building fine; that one platform got
  broken by another patch in your tree and I'm going to submit a patch
  separately.

   - a handful of fixes that didn't make 3.11
   - a few bits of Octeon 3 support with more to come for a later
     release
   - platform enhancements for Octeon, ath79, Lantiq, Netlogic and
     Ralink SOCs
   - a GPIO driver for the Octeon
   - some dusting off of the DECstation code
   - the usual dose of cleanups"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (65 commits)
  MIPS: DMA: Fix BUG due to smp_processor_id() in preemptible code
  MIPS: kexec: Fix random crashes while loading crashkernel
  MIPS: kdump: Skip walking indirection page for crashkernels
  MIPS: DECstation HRT calibration bug fixes
  MIPS: Export copy_from_user_page() (needed by lustre)
  MIPS: Add driver for the built-in PCI controller of the RT3883 SoC
  MIPS: DMA: For BMIPS5000 cores flush region just like non-coherent R10000
  MIPS: ralink: Add support for reset-controller API
  MIPS: ralink: mt7620: Add cpu-feature-override header
  MIPS: ralink: mt7620: Add spi clock definition
  MIPS: ralink: mt7620: Add wdt clock definition
  MIPS: ralink: mt7620: Improve clock frequency detection
  MIPS: ralink: mt7620: This SoC has EHCI and OHCI hosts
  MIPS: ralink: mt7620: Add verbose ram info
  MIPS: ralink: Probe clocksources from OF
  MIPS: ralink: Add support for systick timer found on newer ralink SoC
  MIPS: ralink: Add support for periodic timer irq
  MIPS: Netlogic: Built-in DTB for XLP2xx SoC boards
  MIPS: Netlogic: Add support for USB on XLP2xx
  MIPS: Netlogic: XLP2xx update for I2C controller
  ...

Commit: 5a7d8a28080caed7fd4cb1b81d092adac4445e8e
Parents: e0ea4045 · eb37e6dd

Merge commit. Changes below are compared with the first parent: e0ea4045.

Changes

103 files changed · +3109 −484

File	Status	Add	Del	Content
Documentation/devicetree/bindings/pci/ralink,rt3883-pci.txt	added	+190	−0	View file
arch/mips/Kconfig	modified	+5	−14	View file
arch/mips/Makefile	modified	+29	−5	View file
arch/mips/ath79/clock.c	modified	+149	−109	View file
arch/mips/ath79/common.h	modified	+2	−0	View file
arch/mips/ath79/dev-common.c	modified	+4	−6	View file
arch/mips/ath79/setup.c	modified	+17	−6	View file
arch/mips/boot/.gitignore	modified	+1	−0	View file
arch/mips/boot/Makefile	modified	+15	−0	View file
arch/mips/boot/compressed/Makefile	modified	+1	−1	View file
arch/mips/boot/dts/include/dt-bindings	added	+1	−0	View file
arch/mips/cavium-octeon/octeon-irq.c	modified	+1	−1	View file
arch/mips/cavium-octeon/setup.c	modified	+28	−0	View file
arch/mips/cavium-octeon/smp.c	modified	+1	−3	View file
arch/mips/configs/xway_defconfig	added	+159	−0	View file
arch/mips/dec/time.c	modified	+3	−2	View file
arch/mips/include/asm/Kbuild	modified	+13	−0	View file
arch/mips/include/asm/bmips.h	modified	+22	−33	View file
arch/mips/include/asm/cpu.h	modified	+5	−1	View file
arch/mips/include/asm/cputime.h	deleted	+0	−6	View before deletion
arch/mips/include/asm/current.h	deleted	+0	−1	View before deletion
arch/mips/include/asm/emergency-restart.h	deleted	+0	−6	View before deletion
arch/mips/include/asm/local64.h	deleted	+0	−1	View before deletion
arch/mips/include/asm/mach-ath79/cpu-feature-overrides.h	modified	+0	−2	View file
arch/mips/include/asm/mach-cavium-octeon/gpio.h	added	+21	−0	View file
arch/mips/include/asm/mach-lantiq/falcon/cpu-feature-overrides.h	added	+58	−0	View file
arch/mips/include/asm/mach-ralink/mt7620.h	modified	+32	−8	View file
arch/mips/include/asm/mach-ralink/mt7620/cpu-feature-overrides.h	added	+57	−0	View file
arch/mips/include/asm/mutex.h	deleted	+0	−9	View before deletion
arch/mips/include/asm/netlogic/xlp-hal/bridge.h	modified	+4	−0	View file
arch/mips/include/asm/netlogic/xlp-hal/iomap.h	modified	+10	−0	View file
arch/mips/include/asm/netlogic/xlp-hal/pic.h	modified	+3	−2	View file
arch/mips/include/asm/netlogic/xlp-hal/sys.h	modified	+31	−0	View file
arch/mips/include/asm/netlogic/xlp-hal/xlp.h	modified	+17	−0	View file
arch/mips/include/asm/netlogic/xlr/pic.h	modified	+2	−0	View file
arch/mips/include/asm/octeon/octeon.h	modified	+2	−0	View file
arch/mips/include/asm/parport.h	deleted	+0	−1	View before deletion
arch/mips/include/asm/percpu.h	deleted	+0	−6	View before deletion
arch/mips/include/asm/scatterlist.h	deleted	+0	−6	View before deletion
arch/mips/include/asm/sections.h	deleted	+0	−6	View before deletion
arch/mips/include/asm/segment.h	deleted	+0	−6	View before deletion
arch/mips/include/asm/serial.h	deleted	+0	−1	View before deletion
arch/mips/include/asm/ucontext.h	deleted	+0	−1	View before deletion
arch/mips/include/asm/xor.h	deleted	+0	−1	View before deletion
arch/mips/include/uapi/asm/Kbuild	modified	+3	−2	View file
arch/mips/include/uapi/asm/auxvec.h	deleted	+0	−4	View before deletion
arch/mips/include/uapi/asm/ipcbuf.h	deleted	+0	−1	View before deletion
arch/mips/kernel/cpu-probe.c	modified	+12	−0	View file
arch/mips/kernel/csrc-ioasic.c	modified	+3	−3	View file
arch/mips/kernel/idle.c	modified	+1	−0	View file
arch/mips/kernel/mcount.S	modified	+1	−1	View file
arch/mips/kernel/relocate_kernel.S	modified	+6	−0	View file
arch/mips/kernel/setup.c	modified	+48	−51	View file
arch/mips/kernel/time.c	modified	+9	−1	View file
arch/mips/kernel/vmlinux.lds.S	modified	+1	−0	View file
arch/mips/lantiq/falcon/sysctrl.c	modified	+4	−1	View file
arch/mips/lantiq/xway/Makefile	modified	+1	−1	View file
arch/mips/lantiq/xway/dcdc.c	added	+63	−0	View file
arch/mips/lasat/image/Makefile	modified	+2	−4	View file
arch/mips/loongson/common/Makefile	modified	+2	−1	View file
arch/mips/math-emu/cp1emu.c	modified	+0	−27	View file
arch/mips/mm/c-octeon.c	modified	+14	−0	View file
arch/mips/mm/dma-default.c	modified	+11	−7	View file
arch/mips/mm/gup.c	modified	+2	−1	View file
arch/mips/mm/init.c	modified	+1	−0	View file
arch/mips/mm/tlb-funcs.S	modified	+2	−0	View file
arch/mips/mm/tlbex.c	modified	+2	−0	View file
arch/mips/netlogic/Kconfig	modified	+9	−0	View file
arch/mips/netlogic/common/smp.c	modified	+1	−3	View file
arch/mips/netlogic/common/time.c	modified	+2	−1	View file
arch/mips/netlogic/dts/Makefile	modified	+1	−0	View file
arch/mips/netlogic/dts/xlp_evp.dts	modified	+1	−8	View file
arch/mips/netlogic/dts/xlp_fvp.dts	added	+118	−0	View file
arch/mips/netlogic/dts/xlp_svp.dts	modified	+1	−8	View file
arch/mips/netlogic/xlp/Makefile	modified	+1	−0	View file
arch/mips/netlogic/xlp/dt.c	modified	+7	−1	View file
arch/mips/netlogic/xlp/nlm_hal.c	modified	+202	−35	View file
arch/mips/netlogic/xlp/setup.c	modified	+43	−7	View file
arch/mips/netlogic/xlp/usb-init-xlp2.c	added	+218	−0	View file
arch/mips/netlogic/xlp/usb-init.c	modified	+4	−2	View file
arch/mips/netlogic/xlp/wakeup.c	modified	+6	−4	View file
arch/mips/pci/Makefile	modified	+1	−0	View file
arch/mips/pci/pci-octeon.c	modified	+5	−4	View file
arch/mips/pci/pci-rt3883.c	added	+636	−0	View file
arch/mips/powertv/Kconfig	modified	+1	−8	View file
arch/mips/powertv/asic/asic_devices.c	modified	+1	−11	View file
arch/mips/powertv/init.c	modified	+0	−4	View file
arch/mips/powertv/reset.c	modified	+0	−12	View file
arch/mips/ralink/Kconfig	modified	+10	−0	View file
arch/mips/ralink/Makefile	modified	+3	−1	View file
arch/mips/ralink/Platform	modified	+1	−0	View file
arch/mips/ralink/cevt-rt3352.c	added	+145	−0	View file
arch/mips/ralink/clk.c	modified	+1	−0	View file
arch/mips/ralink/common.h	modified	+2	−0	View file
arch/mips/ralink/mt7620.c	modified	+180	−25	View file
arch/mips/ralink/of.c	modified	+3	−0	View file
arch/mips/ralink/reset.c	modified	+62	−0	View file
arch/mips/ralink/timer.c	added	+185	−0	View file
arch/mips/txx9/generic/setup.c	modified	+1	−1	View file
drivers/gpio/Kconfig	modified	+8	−0	View file
drivers/gpio/Makefile	modified	+1	−0	View file
drivers/gpio/gpio-octeon.c	added	+157	−0	View file
scripts/package/buildtar	modified	+21	−0	View file

Only the first 600 diff lines are shown. Download the complete patch.

Documentation/devicetree/bindings/pci/ralink,rt3883-pci.txt

View file

diff --git a/Documentation/devicetree/bindings/pci/ralink,rt3883-pci.txt b/Documentation/devicetree/bindings/pci/ralink,rt3883-pci.txt
new file mode 100644
index 0000000..8e0a1eb
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/ralink,rt3883-pci.txt
@@ -0,0 +1,190 @@
+* Mediatek/Ralink RT3883 PCI controller
+
+1) Main node
+
+   Required properties:
+
+   - compatible: must be "ralink,rt3883-pci"
+
+   - reg: specifies the physical base address of the controller and
+     the length of the memory mapped region.
+
+   - #address-cells: specifies the number of cells needed to encode an
+     address. The value must be 1.
+
+   - #size-cells: specifies the number of cells used to represent the size
+     of an address. The value must be 1.
+
+   - ranges: specifies the translation between child address space and parent
+     address space
+
+  Optional properties:
+
+   - status: indicates the operational status of the device.
+     Value must be either "disabled" or "okay".
+
+2) Child nodes
+
+   The main node must have two child nodes which describes the built-in
+   interrupt controller and the PCI host bridge.
+
+   a) Interrupt controller:
+
+   Required properties:
+
+   - interrupt-controller: identifies the node as an interrupt controller
+
+   - #address-cells: specifies the number of cells needed to encode an
+     address. The value must be 0. As such, 'interrupt-map' nodes do not
+     have to specify a parent unit address.
+
+   - #interrupt-cells: specifies the number of cells needed to encode an
+     interrupt source. The value must be 1.
+
+   - interrupt-parent: the phandle for the interrupt controller that
+     services interrupts for this device.
+
+   - interrupts: specifies the interrupt source of the parent interrupt
+     controller. The format of the interrupt specifier depends on the
+     parent interrupt controller.
+
+   b) PCI host bridge:
+
+   Required properties:
+
+   - #address-cells: specifies the number of cells needed to encode an
+     address. The value must be 0.
+
+   - #size-cells: specifies the number of cells used to represent the size
+     of an address. The value must be 2.
+
+   - #interrupt-cells: specifies the number of cells needed to encode an
+     interrupt source. The value must be 1.
+
+   - device_type: must be "pci"
+
+   - bus-range: PCI bus numbers covered
+
+   - ranges: specifies the ranges for the PCI memory and I/O regions
+
+   - interrupt-map-mask,
+   - interrupt-map: standard PCI properties to define the mapping of the
+     PCI interface to interrupt numbers.
+
+   The PCI host bridge node migh have additional sub-nodes representing
+   the onboard PCI devices/PCI slots. Each such sub-node must have the
+   following mandatory properties:
+
+     - reg: used only for interrupt mapping, so only the first four bytes
+       are used to refer to the correct bus number and device number.
+
+     - device_type: must be "pci"
+
+   If a given sub-node represents a PCI bridge it must have following
+   mandatory properties as well:
+
+     - #address-cells: must be set to <3>
+
+     - #size-cells: must set to <2>
+
+     - #interrupt-cells: must be set to <1>
+
+     - interrupt-map-mask,
+     - interrupt-map: standard PCI properties to define the mapping of the
+       PCI interface to interrupt numbers.
+
+   Besides the required properties the sub-nodes may have these optional
+   properties:
+
+     - status: indicates the operational status of the sub-node.
+       Value must be either "disabled" or "okay".
+
+3) Example:
+
+   a) SoC specific dtsi file:
+
+	pci@10140000 {
+		compatible = "ralink,rt3883-pci";
+		reg = <0x10140000 0x20000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges; /* direct mapping */
+
+		status = "disabled";
+
+		pciintc: interrupt-controller {
+			interrupt-controller;
+			#address-cells = <0>;
+			#interrupt-cells = <1>;
+
+			interrupt-parent = <&cpuintc>;
+			interrupts = <4>;
+		};
+
+		host-bridge {
+			#address-cells = <3>;
+			#size-cells = <2>;
+			#interrupt-cells = <1>;
+
+			device_type = "pci";
+
+			bus-range = <0 255>;
+			ranges = <
+				0x02000000 0 0x00000000 0x20000000 0 0x10000000 /* pci memory */
+				0x01000000 0 0x00000000 0x10160000 0 0x00010000 /* io space */
+			>;
+
+			interrupt-map-mask = <0xf800 0 0 7>;
+			interrupt-map = <
+				/* IDSEL 17 */
+				0x8800 0 0 1 &pciintc 18
+				0x8800 0 0 2 &pciintc 18
+				0x8800 0 0 3 &pciintc 18
+				0x8800 0 0 4 &pciintc 18
+				/* IDSEL 18 */
+				0x9000 0 0 1 &pciintc 19
+				0x9000 0 0 2 &pciintc 19
+				0x9000 0 0 3 &pciintc 19
+				0x9000 0 0 4 &pciintc 19
+			>;
+
+			pci-bridge@1 {
+				reg = <0x0800 0 0 0 0>;
+				device_type = "pci";
+				#interrupt-cells = <1>;
+				#address-cells = <3>;
+				#size-cells = <2>;
+
+				interrupt-map-mask = <0x0 0 0 0>;
+				interrupt-map = <0x0 0 0 0 &pciintc 20>;
+
+				status = "disabled";
+			};
+
+			pci-slot@17 {
+				reg = <0x8800 0 0 0 0>;
+				device_type = "pci";
+
+				status = "disabled";
+			};
+
+			pci-slot@18 {
+				reg = <0x9000 0 0 0 0>;
+				device_type = "pci";
+
+				status = "disabled";
+			};
+		};
+	};
+
+   b) Board specific dts file:
+
+	pci@10140000 {
+		status = "okay";
+
+		host-bridge {
+			pci-bridge@1 {
+				status = "okay";
+			};
+		};
+	};

arch/mips/Kconfig

View file

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 71f15e7..a9668d4 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -95,6 +95,7 @@ config ATH79
 	select CSRC_R4K
 	select DMA_NONCOHERENT
 	select HAVE_CLK
+	select CLKDEV_LOOKUP
 	select IRQ_CPU
 	select MIPS_MACHINE
 	select SYS_HAS_CPU_MIPS32_R2
@@ -131,7 +132,6 @@ config BCM63XX
 	select IRQ_CPU
 	select SYS_HAS_CPU_MIPS32_R1
 	select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
-	select NR_CPUS_DEFAULT_2
 	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_BIG_ENDIAN
 	select SYS_HAS_EARLY_PRINTK
@@ -445,6 +445,8 @@ config RALINK
 	select SYS_HAS_EARLY_PRINTK
 	select HAVE_MACH_CLKDEV
 	select CLKDEV_LOOKUP
+	select ARCH_HAS_RESET_CONTROLLER
+	select RESET_CONTROLLER
 
 config SGI_IP22
 	bool "SGI IP22 (Indy/Indigo2)"
@@ -609,7 +611,6 @@ config SIBYTE_SWARM
 	select BOOT_ELF32
 	select DMA_COHERENT
 	select HAVE_PATA_PLATFORM
-	select NR_CPUS_DEFAULT_2
 	select SIBYTE_SB1250
 	select SWAP_IO_SPACE
 	select SYS_HAS_CPU_SB1
@@ -623,7 +624,6 @@ config SIBYTE_LITTLESUR
 	select BOOT_ELF32
 	select DMA_COHERENT
 	select HAVE_PATA_PLATFORM
-	select NR_CPUS_DEFAULT_2
 	select SIBYTE_SB1250
 	select SWAP_IO_SPACE
 	select SYS_HAS_CPU_SB1
@@ -635,7 +635,6 @@ config SIBYTE_SENTOSA
 	bool "Sibyte BCM91250E-Sentosa"
 	select BOOT_ELF32
 	select DMA_COHERENT
-	select NR_CPUS_DEFAULT_2
 	select SIBYTE_SB1250
 	select SWAP_IO_SPACE
 	select SYS_HAS_CPU_SB1
@@ -731,6 +730,7 @@ config CAVIUM_OCTEON_SOC
 	select USB_ARCH_HAS_OHCI
 	select USB_ARCH_HAS_EHCI
 	select HOLES_IN_ZONE
+	select ARCH_REQUIRE_GPIOLIB
 	help
 	  This option supports all of the Octeon reference boards from Cavium
 	  Networks. It builds a kernel that dynamically determines the Octeon
@@ -1860,7 +1860,6 @@ config MIPS_MT_SMP
 	select CPU_MIPSR2_IRQ_VI
 	select CPU_MIPSR2_IRQ_EI
 	select MIPS_MT
-	select NR_CPUS_DEFAULT_2
 	select SMP
 	select SYS_SUPPORTS_SCHED_SMT if SMP
 	select SYS_SUPPORTS_SMP
@@ -2171,12 +2170,6 @@ config SYS_SUPPORTS_MIPS_CMP
 config SYS_SUPPORTS_SMP
 	bool
 
-config NR_CPUS_DEFAULT_1
-	bool
-
-config NR_CPUS_DEFAULT_2
-	bool
-
 config NR_CPUS_DEFAULT_4
 	bool
 
@@ -2194,10 +2187,8 @@ config NR_CPUS_DEFAULT_64
 
 config NR_CPUS
 	int "Maximum number of CPUs (2-64)"
-	range 1 64 if NR_CPUS_DEFAULT_1
+	range 2 64
 	depends on SMP
-	default "1" if NR_CPUS_DEFAULT_1
-	default "2" if NR_CPUS_DEFAULT_2
 	default "4" if NR_CPUS_DEFAULT_4
 	default "8" if NR_CPUS_DEFAULT_8
 	default "16" if NR_CPUS_DEFAULT_16

arch/mips/Makefile

View file

diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 37f9ef3..75a36ad 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -194,6 +194,8 @@ include $(srctree)/arch/mips/Kbuild.platforms
 ifdef CONFIG_PHYSICAL_START
 load-y					= $(CONFIG_PHYSICAL_START)
 endif
+entry-y				= 0x$(shell $(NM) vmlinux 2>/dev/null \
+					| grep "\bkernel_entry\b" | cut -f1 -d \ )
 
 cflags-y			+= -I$(srctree)/arch/mips/include/asm/mach-generic
 drivers-$(CONFIG_PCI)		+= arch/mips/pci/
@@ -225,6 +227,9 @@ KBUILD_CFLAGS	+= $(cflags-y)
 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
 
+bootvars-y	= VMLINUX_LOAD_ADDRESS=$(load-y) \
+		  VMLINUX_ENTRY_ADDRESS=$(entry-y)
+
 LDFLAGS			+= -m $(ld-emul)
 
 ifdef CONFIG_CC_STACKPROTECTOR
@@ -254,9 +259,25 @@ drivers-$(CONFIG_OPROFILE)	+= arch/mips/oprofile/
 # suspend and hibernation support
 drivers-$(CONFIG_PM)	+= arch/mips/power/
 
+# boot image targets (arch/mips/boot/)
+boot-y			:= vmlinux.bin
+boot-y			+= vmlinux.ecoff
+boot-y			+= vmlinux.srec
+ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
+boot-y			+= uImage
+boot-y			+= uImage.gz
+endif
+
+# compressed boot image targets (arch/mips/boot/compressed/)
+bootz-y			:= vmlinuz
+bootz-y			+= vmlinuz.bin
+bootz-y			+= vmlinuz.ecoff
+bootz-y			+= vmlinuz.srec
+
 ifdef CONFIG_LASAT
 rom.bin rom.sw: vmlinux
-	$(Q)$(MAKE) $(build)=arch/mips/lasat/image $@
+	$(Q)$(MAKE) $(build)=arch/mips/lasat/image \
+		$(bootvars-y) $@
 endif
 
 #
@@ -280,13 +301,14 @@ vmlinux.64: vmlinux
 all:	$(all-y)
 
 # boot
-vmlinux.bin vmlinux.ecoff vmlinux.srec: $(vmlinux-32) FORCE
-	$(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) arch/mips/boot/$@
+$(boot-y): $(vmlinux-32) FORCE
+	$(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
+		$(bootvars-y) arch/mips/boot/$@
 
 # boot/compressed
-vmlinuz vmlinuz.bin vmlinuz.ecoff vmlinuz.srec: $(vmlinux-32) FORCE
+$(bootz-y): $(vmlinux-32) FORCE
 	$(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
-	   VMLINUX_LOAD_ADDRESS=$(load-y) 32bit-bfd=$(32bit-bfd) $@
+		$(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
 
 
 CLEAN_FILES += vmlinux.32 vmlinux.64
@@ -323,6 +345,8 @@ define archhelp
 	echo '  vmlinuz.ecoff        - ECOFF zboot image'
 	echo '  vmlinuz.bin          - Raw binary zboot image'
 	echo '  vmlinuz.srec         - SREC zboot image'
+	echo '  uImage               - U-Boot image'
+	echo '  uImage.gz            - U-Boot image (gzip)'
 	echo
 	echo '  These will be default as appropriate for a configured platform.'
 endef

arch/mips/ath79/clock.c

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diff --git a/arch/mips/ath79/clock.c b/arch/mips/ath79/clock.c
index 765ef30..26479f4 100644
--- a/arch/mips/ath79/clock.c
+++ b/arch/mips/ath79/clock.c
@@ -16,6 +16,7 @@
 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/clk.h>
+#include <linux/clkdev.h>
 
 #include <asm/div64.h>
 
@@ -31,92 +32,132 @@ struct clk {
 	unsigned long rate;
 };
 
-static struct clk ath79_ref_clk;
-static struct clk ath79_cpu_clk;
-static struct clk ath79_ddr_clk;
-static struct clk ath79_ahb_clk;
-static struct clk ath79_wdt_clk;
-static struct clk ath79_uart_clk;
+static void __init ath79_add_sys_clkdev(const char *id, unsigned long rate)
+{
+	struct clk *clk;
+	int err;
+
+	clk = kzalloc(sizeof(*clk), GFP_KERNEL);
+	if (!clk)
+		panic("failed to allocate %s clock structure", id);
+
+	clk->rate = rate;
+
+	err = clk_register_clkdev(clk, id, NULL);
+	if (err)
+		panic("unable to register %s clock device", id);
+}
 
 static void __init ar71xx_clocks_init(void)
 {
+	unsigned long ref_rate;
+	unsigned long cpu_rate;
+	unsigned long ddr_rate;
+	unsigned long ahb_rate;
 	u32 pll;
 	u32 freq;
 	u32 div;
 
-	ath79_ref_clk.rate = AR71XX_BASE_FREQ;
+	ref_rate = AR71XX_BASE_FREQ;
 
 	pll = ath79_pll_rr(AR71XX_PLL_REG_CPU_CONFIG);
 
 	div = ((pll >> AR71XX_PLL_DIV_SHIFT) & AR71XX_PLL_DIV_MASK) + 1;
-	freq = div * ath79_ref_clk.rate;
+	freq = div * ref_rate;
 
 	div = ((pll >> AR71XX_CPU_DIV_SHIFT) & AR71XX_CPU_DIV_MASK) + 1;
-	ath79_cpu_clk.rate = freq / div;
+	cpu_rate = freq / div;
 
 	div = ((pll >> AR71XX_DDR_DIV_SHIFT) & AR71XX_DDR_DIV_MASK) + 1;
-	ath79_ddr_clk.rate = freq / div;
+	ddr_rate = freq / div;
 
 	div = (((pll >> AR71XX_AHB_DIV_SHIFT) & AR71XX_AHB_DIV_MASK) + 1) * 2;
-	ath79_ahb_clk.rate = ath79_cpu_clk.rate / div;
+	ahb_rate = cpu_rate / div;
+
+	ath79_add_sys_clkdev("ref", ref_rate);
+	ath79_add_sys_clkdev("cpu", cpu_rate);
+	ath79_add_sys_clkdev("ddr", ddr_rate);
+	ath79_add_sys_clkdev("ahb", ahb_rate);
 
-	ath79_wdt_clk.rate = ath79_ahb_clk.rate;
-	ath79_uart_clk.rate = ath79_ahb_clk.rate;
+	clk_add_alias("wdt", NULL, "ahb", NULL);
+	clk_add_alias("uart", NULL, "ahb", NULL);
 }
 
 static void __init ar724x_clocks_init(void)
 {
+	unsigned long ref_rate;
+	unsigned long cpu_rate;
+	unsigned long ddr_rate;
+	unsigned long ahb_rate;
 	u32 pll;
 	u32 freq;
 	u32 div;
 
-	ath79_ref_clk.rate = AR724X_BASE_FREQ;
+	ref_rate = AR724X_BASE_FREQ;
 	pll = ath79_pll_rr(AR724X_PLL_REG_CPU_CONFIG);
 
 	div = ((pll >> AR724X_PLL_DIV_SHIFT) & AR724X_PLL_DIV_MASK);
-	freq = div * ath79_ref_clk.rate;
+	freq = div * ref_rate;
 
 	div = ((pll >> AR724X_PLL_REF_DIV_SHIFT) & AR724X_PLL_REF_DIV_MASK);
 	freq *= div;
 
-	ath79_cpu_clk.rate = freq;
+	cpu_rate = freq;
 
 	div = ((pll >> AR724X_DDR_DIV_SHIFT) & AR724X_DDR_DIV_MASK) + 1;
-	ath79_ddr_clk.rate = freq / div;
+	ddr_rate = freq / div;
 
 	div = (((pll >> AR724X_AHB_DIV_SHIFT) & AR724X_AHB_DIV_MASK) + 1) * 2;
-	ath79_ahb_clk.rate = ath79_cpu_clk.rate / div;
+	ahb_rate = cpu_rate / div;
+
+	ath79_add_sys_clkdev("ref", ref_rate);
+	ath79_add_sys_clkdev("cpu", cpu_rate);
+	ath79_add_sys_clkdev("ddr", ddr_rate);
+	ath79_add_sys_clkdev("ahb", ahb_rate);
 
-	ath79_wdt_clk.rate = ath79_ahb_clk.rate;
-	ath79_uart_clk.rate = ath79_ahb_clk.rate;
+	clk_add_alias("wdt", NULL, "ahb", NULL);
+	clk_add_alias("uart", NULL, "ahb", NULL);
 }
 
 static void __init ar913x_clocks_init(void)
 {
+	unsigned long ref_rate;
+	unsigned long cpu_rate;
+	unsigned long ddr_rate;
+	unsigned long ahb_rate;
 	u32 pll;
 	u32 freq;
 	u32 div;
 
-	ath79_ref_clk.rate = AR913X_BASE_FREQ;
+	ref_rate = AR913X_BASE_FREQ;
 	pll = ath79_pll_rr(AR913X_PLL_REG_CPU_CONFIG);
 
 	div = ((pll >> AR913X_PLL_DIV_SHIFT) & AR913X_PLL_DIV_MASK);
-	freq = div * ath79_ref_clk.rate;
+	freq = div * ref_rate;
 
-	ath79_cpu_clk.rate = freq;
+	cpu_rate = freq;
 
 	div = ((pll >> AR913X_DDR_DIV_SHIFT) & AR913X_DDR_DIV_MASK) + 1;
-	ath79_ddr_clk.rate = freq / div;
+	ddr_rate = freq / div;
 
 	div = (((pll >> AR913X_AHB_DIV_SHIFT) & AR913X_AHB_DIV_MASK) + 1) * 2;
-	ath79_ahb_clk.rate = ath79_cpu_clk.rate / div;
+	ahb_rate = cpu_rate / div;
 
-	ath79_wdt_clk.rate = ath79_ahb_clk.rate;
-	ath79_uart_clk.rate = ath79_ahb_clk.rate;
+	ath79_add_sys_clkdev("ref", ref_rate);
+	ath79_add_sys_clkdev("cpu", cpu_rate);
+	ath79_add_sys_clkdev("ddr", ddr_rate);
+	ath79_add_sys_clkdev("ahb", ahb_rate);
+
+	clk_add_alias("wdt", NULL, "ahb", NULL);
+	clk_add_alias("uart", NULL, "ahb", NULL);
 }
 
 static void __init ar933x_clocks_init(void)
 {
+	unsigned long ref_rate;
+	unsigned long cpu_rate;
+	unsigned long ddr_rate;
+	unsigned long ahb_rate;
 	u32 clock_ctrl;
 	u32 cpu_config;
 	u32 freq;
@@ -124,21 +165,21 @@ static void __init ar933x_clocks_init(void)
 
 	t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
 	if (t & AR933X_BOOTSTRAP_REF_CLK_40)
-		ath79_ref_clk.rate = (40 * 1000 * 1000);
+		ref_rate = (40 * 1000 * 1000);
 	else
-		ath79_ref_clk.rate = (25 * 1000 * 1000);
+		ref_rate = (25 * 1000 * 1000);
 
 	clock_ctrl = ath79_pll_rr(AR933X_PLL_CLOCK_CTRL_REG);
 	if (clock_ctrl & AR933X_PLL_CLOCK_CTRL_BYPASS) {
-		ath79_cpu_clk.rate = ath79_ref_clk.rate;
-		ath79_ahb_clk.rate = ath79_ref_clk.rate;
-		ath79_ddr_clk.rate = ath79_ref_clk.rate;
+		cpu_rate = ref_rate;
+		ahb_rate = ref_rate;
+		ddr_rate = ref_rate;
 	} else {
 		cpu_config = ath79_pll_rr(AR933X_PLL_CPU_CONFIG_REG);
 
 		t = (cpu_config >> AR933X_PLL_CPU_CONFIG_REFDIV_SHIFT) &
 		    AR933X_PLL_CPU_CONFIG_REFDIV_MASK;
-		freq = ath79_ref_clk.rate / t;
+		freq = ref_rate / t;
 
 		t = (cpu_config >> AR933X_PLL_CPU_CONFIG_NINT_SHIFT) &
 		    AR933X_PLL_CPU_CONFIG_NINT_MASK;
@@ -153,19 +194,24 @@ static void __init ar933x_clocks_init(void)
 
 		t = ((clock_ctrl >> AR933X_PLL_CLOCK_CTRL_CPU_DIV_SHIFT) &
 		     AR933X_PLL_CLOCK_CTRL_CPU_DIV_MASK) + 1;
-		ath79_cpu_clk.rate = freq / t;
+		cpu_rate = freq / t;
 
 		t = ((clock_ctrl >> AR933X_PLL_CLOCK_CTRL_DDR_DIV_SHIFT) &
 		      AR933X_PLL_CLOCK_CTRL_DDR_DIV_MASK) + 1;
-		ath79_ddr_clk.rate = freq / t;
+		ddr_rate = freq / t;
 
 		t = ((clock_ctrl >> AR933X_PLL_CLOCK_CTRL_AHB_DIV_SHIFT) &
 		     AR933X_PLL_CLOCK_CTRL_AHB_DIV_MASK) + 1;
-		ath79_ahb_clk.rate = freq / t;
+		ahb_rate = freq / t;
 	}
 
-	ath79_wdt_clk.rate = ath79_ref_clk.rate;
-	ath79_uart_clk.rate = ath79_ref_clk.rate;
+	ath79_add_sys_clkdev("ref", ref_rate);
+	ath79_add_sys_clkdev("cpu", cpu_rate);
+	ath79_add_sys_clkdev("ddr", ddr_rate);
+	ath79_add_sys_clkdev("ahb", ahb_rate);
+
+	clk_add_alias("wdt", NULL, "ahb", NULL);
+	clk_add_alias("uart", NULL, "ref", NULL);
 }
 
 static u32 __init ar934x_get_pll_freq(u32 ref, u32 ref_div, u32 nint, u32 nfrac,
@@ -174,12 +220,12 @@ static u32 __init ar934x_get_pll_freq(u32 ref, u32 ref_div, u32 nint, u32 nfrac,
 	u64 t;