Use cdns,ttc because this driver is Cadence Rev06
Triple Timer Counter and everybody can use it
without xilinx specific function name or probing.
Also use standard dt description for timer
and also prepare for moving to clocksource
initialization.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
The timers are common to both A9 cores, so let's set the clock
event struct's cpumask accordingly, to all possible CPUs.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Tested-by: Josh Cartwright <josh.cartwright@ni.com>
Fixing multi line comment style at two locations.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Tested-by: Josh Cartwright <josh.cartwright@ni.com>
Some #includes are implicitly included through others, some are
just not needed.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Tested-by: Josh Cartwright <josh.cartwright@ni.com>
Aligning the columns in a block of #defines, so that the values
are starting in the same colum on every line.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Tested-by: Josh Cartwright <josh.cartwright@ni.com>
Acknowedging an interrupt requires to read the interrupt register
only. The write was only required to work around a bug in
the QEMU implementation of the TTC, which is fixed.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Tested-by: Josh Cartwright <josh.cartwright@ni.com>
The acronym PSS is deprecated by Xilinx. The correct term, which is
also used in Xilinx documentation is PS (processing system).
This is just a search and replace:
- s/PSS/PS/g
- s/pss/ps/g
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Tested-by: Josh Cartwright <josh.cartwright@ni.com>
The patch: "ARM: use common irqchip_init for GIC init"
(sha1: 0529e315bb)
should also add linux/irqchip.h header.
Error message:
arch/arm/mach-zynq/common.c:99:14: error: 'irqchip_init'
undeclared here (not in a function)
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This creates irqchip initialization infrastructure from Thomas
Petazzoni. The VIC and GIC irqchip code is moved to drivers/irqchips
and adapted to use the new infrastructure. All DT enabled platforms
using GIC and VIC are converted over to use the new irqchip_init.
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Merge tag 'gic-vic-to-irqchip' of git://sources.calxeda.com/kernel/linux into next/cleanup
From Rob Herring:
Initial irqchip init infrastructure and GIC and VIC clean-ups
This creates irqchip initialization infrastructure from Thomas
Petazzoni. The VIC and GIC irqchip code is moved to drivers/irqchips
and adapted to use the new infrastructure. All DT enabled platforms
using GIC and VIC are converted over to use the new irqchip_init.
* tag 'gic-vic-to-irqchip' of git://sources.calxeda.com/kernel/linux:
irqchip: Move ARM vic.h to include/linux/irqchip/arm-vic.h
ARM: picoxcell: use common irqchip_init function
ARM: spear: use common irqchip_init function
irqchip: Move ARM VIC to drivers/irqchip
ARM: samsung: remove unused tick.h
ARM: remove unneeded vic.h includes
ARM: remove mach .handle_irq for VIC users
ARM: VIC: set handle_arch_irq in VIC initialization
ARM: VIC: shrink down vic.h
irqchip: Move ARM gic.h to include/linux/irqchip/arm-gic.h
ARM: use common irqchip_init for GIC init
irqchip: Move ARM GIC to drivers/irqchip
ARM: remove mach .handle_irq for GIC users
ARM: GIC: set handle_arch_irq in GIC initialization
ARM: GIC: remove direct use of gic_raise_softirq
ARM: GIC: remove assembly ifdefs from gic.h
ARM: mach-ux500: use SGI0 to wake up the other core
arm: add set_handle_irq() to register the parent IRQ controller handler function
irqchip: add basic infrastructure
irqchip: add to the directories part of the IRQ subsystem in MAINTAINERS
Fixed up massive merge conflicts with the timer cleanup due to adjacent changes:
Signed-off-by: Olof Johansson <olof@lixom.net>
Conflicts:
arch/arm/mach-bcm/board_bcm.c
arch/arm/mach-cns3xxx/cns3420vb.c
arch/arm/mach-ep93xx/adssphere.c
arch/arm/mach-ep93xx/edb93xx.c
arch/arm/mach-ep93xx/gesbc9312.c
arch/arm/mach-ep93xx/micro9.c
arch/arm/mach-ep93xx/simone.c
arch/arm/mach-ep93xx/snappercl15.c
arch/arm/mach-ep93xx/ts72xx.c
arch/arm/mach-ep93xx/vision_ep9307.c
arch/arm/mach-highbank/highbank.c
arch/arm/mach-imx/mach-imx6q.c
arch/arm/mach-msm/board-dt-8960.c
arch/arm/mach-netx/nxdb500.c
arch/arm/mach-netx/nxdkn.c
arch/arm/mach-netx/nxeb500hmi.c
arch/arm/mach-nomadik/board-nhk8815.c
arch/arm/mach-picoxcell/common.c
arch/arm/mach-realview/realview_eb.c
arch/arm/mach-realview/realview_pb1176.c
arch/arm/mach-realview/realview_pb11mp.c
arch/arm/mach-realview/realview_pba8.c
arch/arm/mach-realview/realview_pbx.c
arch/arm/mach-socfpga/socfpga.c
arch/arm/mach-spear13xx/spear1310.c
arch/arm/mach-spear13xx/spear1340.c
arch/arm/mach-spear13xx/spear13xx.c
arch/arm/mach-spear3xx/spear300.c
arch/arm/mach-spear3xx/spear310.c
arch/arm/mach-spear3xx/spear320.c
arch/arm/mach-spear3xx/spear3xx.c
arch/arm/mach-spear6xx/spear6xx.c
arch/arm/mach-tegra/board-dt-tegra20.c
arch/arm/mach-tegra/board-dt-tegra30.c
arch/arm/mach-u300/core.c
arch/arm/mach-ux500/board-mop500.c
arch/arm/mach-ux500/cpu-db8500.c
arch/arm/mach-versatile/versatile_ab.c
arch/arm/mach-versatile/versatile_dt.c
arch/arm/mach-versatile/versatile_pb.c
arch/arm/mach-vexpress/v2m.c
include/asm-generic/vmlinux.lds.h
Convert all GIC DT initialization over to use common irqchip_init
function.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: David Brown <davidb@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Dinh Nguyen <dinguyen@altera.com>
Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Now that the GIC initialization sets up the handle_arch_irq pointer, we
can remove it for all machines and make it static.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Anton Vorontsov <avorontsov@mvista.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: David Brown <davidb@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Dinh Nguyen <dinguyen@altera.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Now that the only field in struct sys_timer is .init, delete the struct,
and replace the machine descriptor .timer field with the initialization
function itself.
This will enable moving timer drivers into drivers/clocksource without
having to place a public prototype of each struct sys_timer object into
include/linux; the intent is to create a single of_clocksource_init()
function that determines which timer driver to initialize by scanning
the device dtree, much like the proposed irqchip_init() at:
http://www.spinics.net/lists/arm-kernel/msg203686.html
Includes mach-omap2 fixes from Igor Grinberg.
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Remove empty unused mach/hardware.h.
mach/irqs.h is unused because SPARSE_IRQ are ON by default.
mach/timex.h is unused because of CONFIG_ARCH_MULTIPLATFORM.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Tested-by: Josh Cartwright <josh.cartwright@ni.com>
The majority of changes are necessary to remove dependencies on header
files within arch/arm/mach-zynq/include/mach:
uncompress.h
- Deleted. It is unused for ARCH_MULTIPLATFORM builds.
uart.h:
- Move uart definitions out of uart.h into debug/zynq.S, which is
now the only user
zynq_soc.h:
- Move SCU address definitions into common.c.
- Other #defines, such as PERIPHERAL_CLOCK_RATE, TTC0_BASE, etc, are
unused and can be dropped
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Convert low-level debugging routines to make use of debug_ll_io_init().
This is part of the preparation for ARCH_MULTIPLATFORM support for Zynq.
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Now that the TTC driver has proper support for DT bindings, it is not
necessary for the registers to be mapped early. They will be mapped
during clock initialization using of_iomap(). Remove the early mapping.
In addition, remove the extraneous zynq_soc.h include from the timer
driver.
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Add support for retrieving TTC configuration from device tree. This
includes the ability to pull information about the driving clocks from
the of_clk bindings.
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Make the Zynq platform use the newly created zynq clk bindings.
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
The purpose of the created zynq-7000.dtsi file is to describe the
hardware common to all Zynq 7000-based boards. Also, get rid of the
zynq-ep107 device tree, since it is not hardware anyone can purchase.
Add a zc702 dts file based on the zynq-7000.dtsi. Add it to the
dts/Makefile so it is built with the 'dtbs' target.
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
The main UART on the Xilinx ZC702 board is UART1, located at address
e0001000. Add a Kconfig option to select this device as the low-level
debugging port. This allows the really early boot printouts to reach
the USB serial adaptor on this board.
For consistency's sake, add a choice entry for UART0 even though it is
the the default if UART1 is not selected.
Signed-off-by: Nick Bowler <nbowler@elliptictech.com>
Tested-by: Josh Cartwright <josh.cartwright@ni.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Move the sys_timer definition out of ttc driver and make it part of the
common zynq code. This is preparation for renaming and COMMON_CLK
support.
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Shifting them up into the vmalloc region prevents the following warning,
when booting a zynq qemu target with more than 512mb of RAM:
BUG: mapping for 0xe0000000 at 0xe0000000 out of vmalloc space
In addition, it allows for reuse of these mappings when the proper
drivers issue requests via ioremap().
There are currently unknown issues with the early uart mapping. For
now, the uart will be mapped to a known working address.
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Cc: John Linn <john.linn@xilinx.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Michal Simek <michal.simek@xilinx.com>
The Zynq support in mainline does not (yet) make use of any of the
generic clk or clk lookup functionality. Remove what is upstream for
now, until the out-of-tree implementation is in suitable form for
merging.
An important side effect of this patch is that it allows the building of
a Zynq kernel without running into unresolved symbol problems:
drivers/built-in.o: In function `amba_get_enable_pclk':
clkdev.c:(.text+0x444): undefined reference to `clk_enable'
drivers/built-in.o: In function `amba_remove':
clkdev.c:(.text+0x488): undefined reference to `clk_disable'
drivers/built-in.o: In function `amba_probe':
clkdev.c:(.text+0x540): undefined reference to `clk_disable'
drivers/built-in.o: In function `amba_device_add':
clkdev.c:(.text+0x77c): undefined reference to `clk_disable'
drivers/built-in.o: In function `enable_clock':
clkdev.c:(.text+0x29738): undefined reference to `clk_enable'
drivers/built-in.o: In function `disable_clock':
clkdev.c:(.text+0x29778): undefined reference to `clk_disable'
drivers/built-in.o: In function `__pm_clk_remove':
clkdev.c:(.text+0x297f8): undefined reference to `clk_disable'
drivers/built-in.o: In function `pm_clk_suspend':
clkdev.c:(.text+0x29bc8): undefined reference to `clk_disable'
drivers/built-in.o: In function `pm_clk_resume':
clkdev.c:(.text+0x29c28): undefined reference to `clk_enable'
make[2]: *** [vmlinux] Error 1
make[1]: *** [sub-make] Error 2
make: *** [all] Error 2
In addition, eliminate Zynq's "use" of the versatile platform, as it is
no longer needed. As Nick Bowler points out:
For the record, I think this was introduced by commit 56a34b03ff
("ARM: versatile: Make plat-versatile clock optional") which forgot to
select PLAT_VERSATILE_CLOCK on Zynq. This is not all that surprising,
because the fact that Zynq "uses" PLAT_VERSATILE is secretly hidden in
the Makefile.
Nevertheless, the only feature from versatile that Zynq needed was the
clock support, so this patch should *also* delete the secret use of
plat-versatile by removing this line from arch/arm/Makefile:
plat-$(CONFIG_ARCH_ZYNQ) += versatile
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Cc: John Linn <john.linn@xilinx.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Michal Simek <michal.simek@xilinx.com>
The Zynq has a PL310 L2 cache controller. Convert in-tree uses to using
the device tree.
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Cc: John Linn <john.linn@xilinx.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Michal Simek <michal.simek@xilinx.com>
The Zynq uses the cortex-a9-gic. This eliminates the need to hardcode
register addresses.
Signed-off-by: Josh Cartwright <josh.cartwright@ni.com>
Cc: John Linn <john.linn@xilinx.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Michal Simek <michal.simek@xilinx.com>
Now that most platforms don't need disable_fiq and arch_ret_to_user
macros, we can remove the empty macros or empty entry-macro.S files.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Ryan Mallon <rmallon@gmail.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
When this is the only content remaining in mach/system.h then the
whole file is removed.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-and-tested-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: David Brown <davidb@codeaurora.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Remove the now empty arch_reset() from all the mach/system.h includes,
and remove its callsite. Remove arm_machine_restart() as this function
no longer does anything useful.
For samsung platforms, remove the include of mach/system-reset.h and
plat/system-reset.h from their respective mach/system.h headers as these
just define their arch_reset functions. As a result, the s3c2410 and
plat-samsung system-reset.h files are no longer referenced, so remove
these files entirely.
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch_reset() is deprecated; systems should hook into system restart via
the 'restart' method in the platforms machine description record.
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert the zynq platform to be using the gic_handle_irq
function as its primary interrupt handler.
Acked-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Boards used to specify zreladdr in their Makefile.boot with
zreladdr-y := x, so conflicting zreladdrs were silently overwritten.
This patch changes this to zreladdr-y += x, so that we end
up with multiple words in zreladdr in such a case. We can
detect this later and complain if necessary.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Some platforms (like OMAP not to name it) are doing rather complicated
hacks just to determine the base UART address to use. Let's give their
addruart macro some slack by providing an extra work register which will
allow for much needed cleanups.
This is basically a no-op as this commit is only adding the extra argument
to the macro but no one is using it yet.
Signed-off-by: nicolas Pitre <nicolas.pitre@linaro.org>
Reviewed-by: Kevin Hilman <khilman@ti.com>
My previous commit left the file empty and present in the
Makefile, which is a bit dirty and caused problems with
'make distclean', as pointed out by David Howells.
This hopefully cleans it up the right way.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: John Linn <john.linn@xilinx.com>
The zynq platform will never have board files other than the
device tree one, so there is no point splitting it from common.c.
This makes the code more compact.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: John Linn <john.linn@xilinx.com>
The 1st board support is minimal to get a system up and running
on the Xilinx platform.
This platform reuses the clock implementation from plat-versatile, and
it depends entirely on CONFIG_OF support. There is only one board
support file which obtains all device information from a device tree
dtb file which is passed to the kernel at boot time.
Signed-off-by: John Linn <john.linn@xilinx.com>
