From hotplug stress test result, resetting core during enable/disable
operation can improve cpu hotplug stability. So let's set
SRC reset bit in imx_enable_cpu() for the core when its enable bit is
accessed.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
When imx_cpu_die() is being called, the cpu should never return from the
call but just in WFI and wait for hardware to take it down. So let's
do cpu_do_idle() repeatly in the call. Doing this help improve the
relibility of hotplug operation.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This is very useful for detecting 'circular locking dependency' issues.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Having CONFIG_DEBUG_GPIO=y leads to several debug messages polluting kernel log:
[ 0.580325] of_get_named_gpio_flags: can't parse gpios property of node '/regulators/3p3v[0]'
[ 0.581185] 3P3V: 3300 mV
[ 0.584827] of_get_named_gpio_flags exited with status 124
[ 0.585852] vddio-sd0: 3300 mV
[ 0.590023] of_get_named_gpio_flags exited with status 79
[ 0.590770] fec-3v3: 3300 mV
[ 0.594805] of_get_named_gpio_flags exited with status 105
[ 0.595491] usb0_vbus: 5000 mV
[ 0.599687] of_get_named_gpio_flags exited with status 104
[ 0.600380] usb1_vbus: 5000 mV
[ 0.604463] of_get_named_gpio_flags exited with status 126
[ 0.605153] lcd-3v3: 3300 mV
[ 0.608970] of_get_named_gpio_flags exited with status 77
Turn this option off, as these messages are not really useful for normal usage.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
The imx6q_restart() works fine with normal reboot but will run into
problem with emergency reboot like sysrq-b. In that case, of_iomap()
gets called from interrupt context and hence triggers the BUG_ON in
__get_vm_area_node().
Actually, since commit c1e31d1 (ARM: imx: create
mxc_arch_reset_init_dt() for DT boot), imx6q/dl should try to use
mxc_restart() by calling mxc_arch_reset_init_dt() beforehand, where
things like of_iomap() can be done.
The patch updates mxc_restart() a little bit to get it work for imx6q/dl
and kill imx6q_restart() completely.
Reported-by: Nathan Lynch <nathan_lynch@mentor.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
As mx53 is a dt-only SoC, we should retrieve the iomuxc base address from the
device tree, instead of using the old MX53_IO_ADDRESS method.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
As mx53 is a dt-only SoC, we should retrieve the tzic base address from the
device tree, instead of using the old MX53_IO_ADDRESS method.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
As mx53 is a dt-only SoC, we should retrieve the gpt base address and irq
from the device tree, instead of using the old MX53_IO_ADDRESS method.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
The IS_ERR() macro is defined in the linux/err.h header file, so include
it explicitly.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
The i.MX6 has two general-purpose LVDS clocks that can be driven
from a variety of sources. This patch adds a mux and a gate for
both of these clocks.
Signed-off-by: Sean Cross <xobs@kosagi.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
The patch enables soc bus infrastructure and adds a function
imx_soc_device_init() to report soc info via soc device interface for
imx6qdl and imx6sl. With the support, user space can get soc related
info by looking at sysfs like below.
$ cat /sys/devices/soc0/machine
Freescale i.MX6 Quad SABRE Smart Device Board
$ cat /sys/devices/soc0/family
Freescale i.MX
$ cat /sys/devices/soc0/soc_id
i.MX6Q
$ cat /sys/devices/soc0/revision
1.2
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Add imx6sl support into imx_init_revision_from_anatop(), so that it can
be used to initialize cpu type and revision on imx6sl.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
The patch creates a common function imx_init_revision_from_anatop() by
merging imx6q_init_revision() and imx_anatop_get_digprog(), so that any
SoC that encodes revision info in anatop can use it to initialize
revision.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
It calls imx_set_soc_revision() to set up soc revision in
imx6q_init_revision(), and replaces all the occurrences of
imx6q_revision() with common helper imx_get_soc_revision().
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Similar to what we do for cpu type, the patch adds helper functions
imx_set_soc_revision() and imx_get_soc_revision() to maintain
imx_soc_revision in cpu.c.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Add low-level debug support for vybrid, so that earlyprintk can be
enabled for debugging early boot issue.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This flag is a NOOP since 2.6.35 and can be removed.
This is an update for 3.11 of a patch already sent for 3.10
Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Config iomux-gpr1 to select clock source for fec system clock.
Clear gpr1[14], gpr1[18-17] bit to select the fec clock source
from internal anatop PLL.
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
There's a pll4_audio_div clock, an extra divider for pll4, missing
in current clock tree, thus add it.
Signed-off-by: Nicolin Chen <b42378@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks. The call to versatile_sched_clock_init
is moved to .init_early instead, were it is also for non-DT boards.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Jon Medhurst (Tixy) <tixy@linaro.org>
Acked-by: Pawel Moll <pawel.moll@arm.com>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks. To get rid of it, move l2cc init to
.init_machine hook instead.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Dinh Nguyen <dinguyen@altera.com>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Barry Song <baohua.song@csr.com>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
This patch converts clk-imx2[38] clocksource_of_init compatible init
associated with fsl,imx2[38]-clkctrl. With arch/arm calling
of_clk_init(NULL) from time_init(), we can now also remove custom
.init_time hooks.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Jason Cooper <jason@lakedaemon.net>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks. Highbank clock provider need a reference
to system registers, as a workaround current clk driver maps those
independent of arch code now.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks. While at it, also remove some now
redundant includes.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks. While at it, also remove some obsolete
includes.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Jason Cooper <jason@lakedaemon.net>
With arch/arm calling of_clk_init(NULL) from time_init(), we can now
remove custom .init_time hooks. Also remove call to of_clk_init from
clk-bcm2835 with core fixed_clock match, as this has already been
registered now.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Mike Turquette <mturquette@linaro.org>
With arch/arm calling of_clk_init(NULL) and clocksource_of_init()
this is no longer needed. The former is useful because we can make
use of dummy fixed clocks for drivers until the bcm281xx common
clock driver is ready.
Signed-off-by: Matt Porter <matt.porter@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Acked-by: Christian Daudt <csd@broadcom.com>
Most DT ARM machs require common clock providers initialized before timers.
Currently, arch/arm machs use .init_time to call of_clk_init right before
clocksource_of_init. This prevents to remove that callback and use the default
one instead.
This patch adds a call to of_clk_init() to the default .init_time callback
for COMMON_CLK enabled machs to allow to remove custom callbacks where applicable.
While at it, also reorder includes alphabetically.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Current vt8500 board init calls of_clk_init() from vtwm_clk_init. To allow
consolidation of DT driven .time_init, move of_clock_init() to a temporary
.time_init callback that will be removed when arch-wide callback is available.
With previous pmc_base parsing helper for vt8500 clock providers, we can also
safely remove the call to vtwm_clk_init() and get rid of some includes.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Acked-by: Mike Turquette <mturquette@linaro.org>
Common clock framework allows to register clock providers to get called
on of_clk_init() by using CLK_OF_DECLARE. This converts sunxi clock
providers to make use of it and get rid of the mach specific clk init
call. As sunxi has a bunch of independent clk provider nodes, we hook
current clock init to board compatible to make it called once.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Current socfpga board init calls of_clk_init() from .machine_init. To
allow consolidation of DT driven .time_init, move of_clock_init() to
a temporary .time_init that will be removed when arch-wide callback is
available.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Dinh Nguyen <dinguyen@altera.com>
Common clock framework allows to register clock providers to get called
on of_clk_init() by using CLK_OF_DECLARE. This converts prima2 clock
provider to make use of it and get rid of the mach specific clk init
call.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Barry Song <baohua.song@csr.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Common clock framework allows to register clock providers to get called
on of_clk_init() by using CLK_OF_DECLARE. This converts nomadik clock
provider to make use of it and get rid of the mach specific clk init
call. As clocks require system reset controller base address to be
initialized each clock driver checks src_base and calls new
nomadik_src_init if required.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mike Turquette <mturquette@linaro.org>
