25 Aug, 2016
1 commit
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Tegra114 has a HW bug that the PLLD/PLLD2 lock bit cannot be asserted when
the DIS power domain is during up-powergating process but the clamp to this
domain is not removed yet. That causes a timeout and aborts the power
sequence, although the PLLD/PLLD2 has already locked. To remove the false
alarm, we don't use the lock for PLLD/PLLD2. Just wait 1ms and treat the
clocks as locked.Signed-off-by: Vince Hsu
Tested-by: Jonathan Hunter
Signed-off-by: Thierry Reding
Signed-off-by: Stephen Boyd
30 Jun, 2016
1 commit
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Move the UTMI PLL initialization code form clk-tegra.c files into
clk-pll.c. UTMI PLL was being configured and set in HW control right
after registration. However, when the clock init_table is processed and
child clks of PLLU are enabled, it will call in and enable PLLU as
well, and initiate SW enabling sequence even though PLLU is already in
HW control. This leads to getting UTMIPLL stuck with a SEQ_BUSY status.Doing the initialization once during pllu_enable means we configure it
properly into HW control.A side effect of the commonization/localization of the UTMI PLL init
code, is that it corrects some errors that were present for earlier
generations. For instance, in clk-tegra124.c, it used to have:#define UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(x) (((x) & 0x1f) << 6)
when the correct shift to use is present in the new version:
#define UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(x) (((x) & 0x1f) << 27)
which matches the Tegra124 TRM register definition.
Signed-off-by: Andrew Bresticker
[rklein: Merged in some later fixes for potential deadlocks]
Signed-off-by: Rhyland Klein
[treding: coding style bike-shedding, remove unused variable]
Signed-off-by: Thierry Reding
23 Jun, 2016
2 commits
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sor_safe being the parent of the dpaux and dpaux1 clocks, it's not only
natural, but also slightly more efficient, to initialize it before its
children. This avoids orphaning the dpaux and dpaux1 clocks only to get
them reparented when the sor_safe clock is registered.Acked-by: Jon Hunter
Tested-by: Jon Hunter
Acked-by: Rhyland Klein
Signed-off-by: Thierry Reding -
It turns out that sor_safe, rather than pll_p, is the parent of the
dpaux and dpaux1 clocks.Acked-by: Jon Hunter
Tested-by: Jon Hunter
Acked-by: Rhyland Klein
Signed-off-by: Thierry Reding
22 Jun, 2016
1 commit
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The timer clock feeds the timer block, which, among other things, is
used to drive the SOR lane sequencer. Since the Tegra timer driver is
not enabled on 64-bit ARM, nothing currently claims that clock and it
gets disabled by the common clock framework at late_init time.Given the non-obvious dependencies, the timer clock can be considered
a critical part of the SoC infrastructure, requiring its clock source
to be always on.Acked-by: Rhyland Klein
Acked-by: Peter De Schrijver
Signed-off-by: Thierry Reding
17 Jun, 2016
3 commits
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Make the sor1 and sor1_src clocks available on Tegra210. They will be
used by the display driver to support HDMI and DP.Signed-off-by: Thierry Reding
-
The sor1 clock on Tegra210 is structured in the following way:
+-------+
| pllp |---+
+-------+ | +--------------+ +-----------+
+----| | | sor_safe |
+-------+ | | +-----------+
| plld |--------| | |
+-------+ | | +-----------+
| sor1_src |-------| |
+-------+ | | +-----------+
| plld2 |--------| | |
+-------+ | | |
+----| | |
+-------+ | +--------------+ |
| clkm |---+ +-----------+
+-------+ +--------------+ | |
| sor1_brick |-------| sor1 |
+--------------+ | |
+-----------+This is impractical to represent in a clock tree, though, because there
is no name for the mux that has sor_safe and sor1_src as parents. It is
also much more cumbersome to deal with the additional mux because users
of these clocks (the display driver) would have to juggle with an extra
mux for no real reason.To simply things, the above is squashed into two muxes instead, so that
it looks like this:+-------+
| pllp |---+
+-------+ | +--------------+ +-----------+
+----| | | sor_safe |
+-------+ | | +-----------+
| plld |--------| | |
+-------+ | | +-----------+
| sor1_src |-------| sor1 |
+-------+ | | +-----------+
| plld2 |--------| | | |
+-------+ | | | |
+----| | | |
+-------+ | +--------------+ | |
| clkm |---+ | |
+-------+ +--------------+ | |
| sor1_brick |-----------+---+
+--------------+This still very accurately represents the hardware. Note that sor1 has
sor1_brick as input twice, that's because bit 1 in the mux selects the
sor1_brick irrespective of bit 0.Signed-off-by: Thierry Reding
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Enabling spread spectrum on pll_d2 can lead to issues with display
modes. HDMI monitors, for example, would report "Signal Error" and
some modes driven over DisplayPort would generate fuzzy horizontal
bands.Signed-off-by: Thierry Reding
10 Jun, 2016
1 commit
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Commit 86c679a52294 ("clk: tegra: pll: Fix _pll_ramp_calc_pll logic and
_calc_dynamic_ramp_rate") changed the PLL divider computation logic to
consistently use P-divider values from tables as real dividers rather
than the hardware values. Unfortunately for some reason many of the
Tegra210 clocks didn't have their tables updated (most likely an over-
sight by me when applying the patches). This commit fixes them all up.Cc: Jon Hunter
Cc: Rhyland Klein
Acked-by: Rhyland Klein
Signed-off-by: Thierry Reding
28 May, 2016
1 commit
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Most users of IS_ERR_VALUE() in the kernel are wrong, as they
pass an 'int' into a function that takes an 'unsigned long'
argument. This happens to work because the type is sign-extended
on 64-bit architectures before it gets converted into an
unsigned type.However, anything that passes an 'unsigned short' or 'unsigned int'
argument into IS_ERR_VALUE() is guaranteed to be broken, as are
8-bit integers and types that are wider than 'unsigned long'.Andrzej Hajda has already fixed a lot of the worst abusers that
were causing actual bugs, but it would be nice to prevent any
users that are not passing 'unsigned long' arguments.This patch changes all users of IS_ERR_VALUE() that I could find
on 32-bit ARM randconfig builds and x86 allmodconfig. For the
moment, this doesn't change the definition of IS_ERR_VALUE()
because there are probably still architecture specific users
elsewhere.Almost all the warnings I got are for files that are better off
using 'if (err)' or 'if (err < 0)'.
The only legitimate user I could find that we get a warning for
is the (32-bit only) freescale fman driver, so I did not remove
the IS_ERR_VALUE() there but changed the type to 'unsigned long'.
For 9pfs, I just worked around one user whose calling conventions
are so obscure that I did not dare change the behavior.I was using this definition for testing:
#define IS_ERR_VALUE(x) ((unsigned long*)NULL == (typeof (x)*)NULL && \
unlikely((unsigned long long)(x) >= (unsigned long long)(typeof(x))-MAX_ERRNO))which ends up making all 16-bit or wider types work correctly with
the most plausible interpretation of what IS_ERR_VALUE() was supposed
to return according to its users, but also causes a compile-time
warning for any users that do not pass an 'unsigned long' argument.I suggested this approach earlier this year, but back then we ended
up deciding to just fix the users that are obviously broken. After
the initial warning that caused me to get involved in the discussion
(fs/gfs2/dir.c) showed up again in the mainline kernel, Linus
asked me to send the whole thing again.[ Updated the 9p parts as per Al Viro - Linus ]
Signed-off-by: Arnd Bergmann
Cc: Andrzej Hajda
Cc: Andrew Morton
Link: https://lkml.org/lkml/2016/1/7/363
Link: https://lkml.org/lkml/2016/5/27/486
Acked-by: Srinivas Kandagatla # For nvmem part
Signed-off-by: Linus Torvalds
21 May, 2016
1 commit
-
Pull clk updates from Stephen Boyd:
"It's the usual big pile of driver updates and additions, but we do
have a couple core changes in here as well.Core:
- CLK_IS_CRITICAL support has been added. This should allow drivers
to properly express that a certain clk should stay on even if their
prepare/enable count drops to 0 (and in turn the parents of these
clks should stay enabled).- A clk registration API has been added, clk_hw_register(), and an OF
clk provider API has been added, of_clk_add_hw_provider(). These
APIs have been put in place to further split clk providers from clk
consumers, with the goal being to have clk providers never deal
with struct clk pointers at all. Conversion of provider drivers is
on going. clkdev has also gained support for registering clk_hw
pointers directly so we can convert drivers that don't use
devicetree.New Drivers:
- Marvell ap806 and cp110 system controllers (with clks inside!)
- Hisilicon Hi3519 clock and reset controller
- Axis ARTPEC-6 clock controllers
- Oxford Semiconductor OXNAS clock controllers
- AXS10X I2S PLL
- Rockchip RK3399 clock and reset controllerUpdates:
- MMC2 and UART2 clks on Samsung Exynos 3250, ACLK on Samsung Exynos
542x SoCs, and some more clk ID exporting for bus frequency scaling
- Proper BCM2835 PCM clk support and various other clks
- i.MX clk updates for i.MX6SX, i.MX7, and VF610
- Renesas updates for R-Car H3
- Tegra210 got updates for DisplayPort and HDMI 2.0
- Rockchip driver refactorings and fixes due to adding RK3399 support"* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (139 commits)
clk: fix critical clock locking
clk: qcom: mmcc-8996: Remove clocks that should be controlled by RPM
clk: ingenic: Allow divider value to be divided
clk: sunxi: Add display and TCON0 clocks driver
clk: rockchip: drop old_rate calculation on pll rate changes
clk: rockchip: simplify GRF handling in pll clocks
clk: rockchip: lookup General Register Files in rockchip_clk_init
clk: rockchip: fix the rk3399 sdmmc sample / drv name
clk: mvebu: new driver for Armada CP110 system controller
dt-bindings: arm: add DT binding for Marvell CP110 system controller
clk: mvebu: new driver for Armada AP806 system controller
clk: hisilicon: add CRG driver for hi3519 soc
clk: hisilicon: export some hisilicon APIs to modules
reset: hisilicon: add reset controller driver for hisilicon SOCs
clk: bcm/kona: Do not use sizeof on pointer type
clk: qcom: msm8916: Fix crypto clock flags
clk: nxp: lpc18xx: Initialize clk_init_data::flags to 0
clk/axs10x: Add I2S PLL clock driver
clk: imx7d: fix ahb clock mux 1
clk: fix comment of devm_clk_hw_register()
...
19 May, 2016
1 commit
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Pull ARM SoC driver updates from Arnd Bergmann:
"Driver updates for ARM SoCs, these contain various things that touch
the drivers/ directory but got merged through arm-soc for practical
reasons.For the most part, this is now related to power management
controllers, which have not yet been abstracted into a separate
subsystem, and typically require some code in drivers/soc or arch/arm
to control the power domains.Another large chunk here is a rework of the NVIDIA Tegra USB3.0
support, which was surprisingly tricky and took a long time to get
done.Finally, reset controller handling as always gets merged through here
as well"* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits)
arm-ccn: Enable building as module
soc/tegra: pmc: Add generic PM domain support
usb: xhci: tegra: Add Tegra210 support
usb: xhci: Add NVIDIA Tegra XUSB controller driver
dt-bindings: usb: xhci-tegra: Add Tegra210 XUSB controller support
dt-bindings: usb: Add NVIDIA Tegra XUSB controller binding
PCI: tegra: Support per-lane PHYs
dt-bindings: pci: tegra: Update for per-lane PHYs
phy: tegra: Add Tegra210 support
phy: Add Tegra XUSB pad controller support
dt-bindings: phy: tegra-xusb-padctl: Add Tegra210 support
dt-bindings: phy: Add NVIDIA Tegra XUSB pad controller binding
phy: core: Allow children node to be overridden
clk: tegra: Add interface to enable hardware control of SATA/XUSB PLLs
drivers: firmware: psci: make two helper functions inline
soc: renesas: rcar-sysc: Add support for R-Car H3 power areas
soc: renesas: rcar-sysc: Add support for R-Car E2 power areas
soc: renesas: rcar-sysc: Add support for R-Car M2-N power areas
soc: renesas: rcar-sysc: Add support for R-Car M2-W power areas
soc: renesas: rcar-sysc: Add support for R-Car H2 power areas
...
09 May, 2016
1 commit
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…egra/linux into next/drivers
Merge "phy: tegra: Changes for v4.7-rc1" from Thierry Reding:
This set of patches adds support for the Tegra XUSB pad controller. The
controller provides a set of pads (lanes) that are used for I/O by other
IP blocks within Tegra SoCs (PCIe, SATA and XUSB).* tag 'tegra-for-4.7-phy' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
phy: tegra: Add Tegra210 support
phy: Add Tegra XUSB pad controller support
dt-bindings: phy: tegra-xusb-padctl: Add Tegra210 support
dt-bindings: phy: Add NVIDIA Tegra XUSB pad controller binding
phy: core: Allow children node to be overridden
clk: tegra: Add interface to enable hardware control of SATA/XUSB PLLs
03 May, 2016
1 commit
-
…egra/linux into clk-next
Pull tegra clk driver changes from Thierry Reding:
This set of changes contains a bunch of cleanups and minor fixes along
with some new clocks, mainly on Tegra210, in preparation for supporting
DisplayPort and HDMI 2.0.* tag 'tegra-for-4.7-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
clk: tegra: dfll: Reformat CVB frequency table
clk: tegra: dfll: Properly clean up on failure and removal
clk: tegra: dfll: Make code more comprehensible
clk: tegra: dfll: Reference CVB table instead of copying data
clk: tegra: dfll: Update kerneldoc
clk: tegra: Fix PLL_U post divider and initial rate on Tegra30
clk: tegra: Initialize PLL_C to sane rate on Tegra30
clk: tegra: Fix pllre Tegra210 and add pll_re_out1
clk: tegra: Add sor_safe clock
clk: tegra: dpaux and dpaux1 are fixed factor clocks
clk: tegra: Add dpaux1 clock
clk: tegra: Use correct parent for dpaux clock
clk: tegra: Add fixed factor peripheral clock type
clk: tegra: Special-case mipi-cal parent on Tegra114
clk: tegra: Remove trailing blank line
clk: tegra: Constify peripheral clock registers
clk: tegra: Add interface to enable hardware control of SATA/XUSB PLLs
28 Apr, 2016
18 commits
-
Increase the readability of the CVB frequency table by reformatting it a
little.Signed-off-by: Thierry Reding
-
Upon failure to probe the DFLL, the OPP table will not be cleaned up
properly. Fix this and while at it make sure the OPP table will also be
cleared upon driver removal.Signed-off-by: Thierry Reding
-
Rename some variables and structure fields to make the code more
comprehensible. Also change the prototype of internal functions to be
more in line with the OPP core functions.Signed-off-by: Thierry Reding
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Instead of copying parts of the CVB table into a separate structure,
keep track of the selected CVB table and directly reference data from
it.Signed-off-by: Thierry Reding
-
The kerneldoc for struct tegra_dfll_soc_data is stale. Update it to
match the current structure definition.Signed-off-by: Thierry Reding
-
The post divider value in the frequency table is wrong as it would lead
to the PLL producing an output rate of 960 MHz instead of the desired
480 MHz. This wasn't a problem as nothing used the table to actually
initialize the PLL rate, but the bootloader configuration was used
unaltered.If the bootloader does not set up the PLL it will fail to come when used
under Linux. To fix this don't rely on the bootloader, but set the
correct rate in the clock driver.Signed-off-by: Lucas Stach
Signed-off-by: Thierry Reding -
If the bootloader does not touch PLL_C it will stay in its reset state,
failing to lock when enabled. This leads to consumers of this clock to
fail probing. Fix this by always programming the PLL with a sane rate,
which allows it to lock, at startup.Signed-off-by: Lucas Stach
Signed-off-by: Thierry Reding -
Use a new Tegra210 version of the pll_register_pllre function to
allow setting the proper settings for the m and n div fields.Additionally define PLL_RE_OUT1 on Tegra210.
Signed-off-by: Rhyland Klein
[treding@nvidia.com: define PLLRE_OUT1 register offset]
Signed-off-by: Thierry Reding -
The sor_safe clock is a fixed factor (1:17) clock derived from pll_p. It
has a gate bit in the peripheral clock registers. While the SOR is being
powered up, sor_safe can be used as the source until the SOR brick can
generate its own clock.Signed-off-by: Thierry Reding
-
The dpaux (on Tegra124 and Tegra210) and dpaux1 (on Tegra210) are fixed
factor clocks (1:17) and derived from pll_p_out0 (pll_p). They also have
a gate bit in the peripheral clock registers.Signed-off-by: Thierry Reding
-
This clock is of the same type as dpaux and is added to feed into the
second DPAUX block used in conjunction with SOR1.Signed-off-by: Thierry Reding
-
The dpaux clock is derived from pll_p_out0 (pll_p), not clk_m.
Signed-off-by: Thierry Reding
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Some of the peripheral clocks on Tegra are derived from one of the top-
level PLLs with a fixed factor. Support these clocks by implementing the
->enable() and ->disable() callbacks using the peripheral clock register
banks and the ->recalc_rate() by dividing the parent rate by the fixed
factor.Signed-off-by: Thierry Reding
-
Starting with Tegra124, the mipi-cal clock uses the 72 MHz clock as its
source. On Tegra114 this clock's parent was clk_m, so it is the one-off
chip.Signed-off-by: Thierry Reding
-
Trailing blank lines are undesirable (several tools, such as git,
complain about them), so remove it.Signed-off-by: Thierry Reding
-
The peripheral clock registers are defined in static tables. These
tables never need to be modified at runtime, so they can reside in
read-only memory.Signed-off-by: Thierry Reding
-
On Tegra210, hardware control of the SATA and XUSB pad PLLs must be
done during the UPHY enable sequence rather than the PLLE enable
sequence. Export functions to do this so that hardware control can
be enabled from the XUSB padctl driver.Signed-off-by: Andrew Bresticker
Signed-off-by: Rhyland Klein
Signed-off-by: Thierry Reding -
This patch fix spelling typos in printk from various part
of the codes.Signed-off-by: Masanari Iida
Acked-by: Randy Dunlap
Signed-off-by: Jiri Kosina
30 Mar, 2016
1 commit
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The rst_ops structure is never modified. Make it const.
Signed-off-by: Philipp Zabel
Signed-off-by: Stephen Boyd
03 Mar, 2016
1 commit
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This flag is a no-op now. Remove usage of the flag.
Acked-by: Rhyland Klein
Acked-by: Thierry Reding
Signed-off-by: Stephen Boyd
02 Feb, 2016
6 commits
-
Sparse reports the following warnings for structures and functions that
should be declared static:drivers/clk/tegra/clk-tegra-super-gen4.c:70:35: warning: symbol
'tegra_super_gen_info_gen4' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra-super-gen4.c:96:35: warning: symbol
'tegra_super_gen_info_gen5' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra-super-gen4.c:174:13: warning: symbol
'tegra_super_clk_init' was not declared. Should it be static?Fix this by making the above static.
Signed-off-by: Jon Hunter
Acked-by: Rhyland Klein
Signed-off-by: Thierry Reding -
Sparse reports the following warnings for functions in clk-tegra210.c
that should be declared as static:drivers/clk/tegra/clk-tegra210.c:460:6: warning: symbol
'tegra210_pllcx_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:485:6: warning: symbol
'_pllc_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:490:6: warning: symbol
'_pllc2_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:495:6: warning: symbol
'_pllc3_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:500:6: warning: symbol
'_plla1_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:510:6: warning: symbol
'tegra210_plla_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:562:6: warning: symbol
'tegra210_plld_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:701:6: warning: symbol
'tegra210_plld2_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:709:6: warning: symbol
'tegra210_plldp_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:722:6: warning: symbol
'tegra210_pllc4_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:731:6: warning: symbol
'tegra210_pllre_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:844:6: warning: symbol
'tegra210_pllx_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:904:6: warning: symbol
'tegra210_pllmb_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:963:6: warning: symbol
'tegra210_pllp_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:1025:6: warning: symbol
'tegra210_pllu_set_defaults' was not declared. Should it be static?
drivers/clk/tegra/clk-tegra210.c:1215:15: warning: symbol
'tegra210_clk_adjust_vco_min' was not declared. Should it be static?Fix this by declaring the above as static.
Signed-off-by: Jon Hunter
Acked-by: Rhyland Klein
Signed-off-by: Thierry Reding -
Sparse generates the following warning for the pll_m params structure:
drivers/clk/tegra/clk-tegra210.c:1569:10: warning: Initializer entry
defined twice
drivers/clk/tegra/clk-tegra210.c:1570:10: also defined hereFix this by correcting the index for the MISC1 register.
Fixes: b31eba5ff3f7 ("clk: tegra: Add support for Tegra210 clocks")
Signed-off-by: Jon Hunter
Acked-by: Rhyland Klein
Signed-off-by: Thierry Reding -
The definition, PLLU_BASE_OVERRIDE, for the pll_u OVERRIDE bit is defined
but not used and when the OVERRIDE bit is cleared in tegra210_pll_init()
the code directly uses the bit number. Therefore, use the definition,
PLLU_BASE_OVERRIDE when clearing the OVERRIDE bit.Signed-off-by: Jon Hunter
Acked-by: Rhyland Klein
Signed-off-by: Thierry Reding -
If the pll_u is not configured by the bootloader, then on kernel boot the
following warning is seen:clk_pll_wait_for_lock: Timed out waiting for pll pll_u_vco lock
tegra_init_from_table: Failed to enable pll_u_out1
------------[ cut here ]------------
WARNING: at drivers/clk/tegra/clk.c:269
Modules linked in:CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.0-rc4-next-20151214+ #1
Hardware name: NVIDIA Tegra210 P2371 reference board (E.1) (DT)
task: ffffffc0bc0a0000 ti: ffffffc0bc0a8000 task.ti: ffffffc0bc0a8000
PC is at tegra_init_from_table+0x140/0x164
LR is at tegra_init_from_table+0x140/0x164
pc : [] lr : [] pstate: 80000045
sp : ffffffc0bc0abd50
x29: ffffffc0bc0abd50 x28: ffffffc00090b8a8
x27: ffffffc000a06000 x26: ffffffc0bc019780
x25: ffffffc00086a708 x24: ffffffc00086a790
x23: ffffffc0006d7188 x22: ffffffc0bc010000
x21: 000000000000016e x20: ffffffc0bc00d100
x19: ffffffc000944178 x18: 0000000000000007
x17: 000000000000000e x16: 0000000000000001
x15: 0000000000000007 x14: 000000000000000e
x13: 0000000000000013 x12: 000000000000001a
x11: 000000000000004d x10: 0000000000000750
x9 : ffffffc0bc0a8000 x8 : ffffffc0bc0a07b0
x7 : 0000000000000001 x6 : 0000000002d5f0f8
x5 : 0000000000000000 x4 : 0000000000000000
x3 : 0000000000000002 x2 : ffffffc000996724
x1 : 0000000000000000 x0 : 0000000000000032---[ end trace cbd20ae519e92ced ]---
Call trace:
[] tegra_init_from_table+0x140/0x164
[] tegra210_clock_apply_init_table+0x20/0x28
[] tegra_clocks_apply_init_table+0x18/0x24
[] do_one_initcall+0x90/0x194
[] kernel_init_freeable+0x148/0x1e8
[] kernel_init+0x10/0xdc
[] ret_from_fork+0x10/0x40
clk_pll_wait_for_lock: Timed out waiting for pll pll_u_vco lock
tegra_init_from_table: Failed to enable pll_u_out2
------------[ cut here ]------------pll_u can be either controlled by software or hardware and this is
selected via the OVERRIDE bit in the pll_u base register. In the function
tegra210_pll_init(), the OVERRIDE bit for pll_u is cleared, which selects
hardware control of the pll. However, at the same time the pll_u clocks
are populated in the init_table for tegra210 and so software will try to
configure the pll_u if it is not already configured and hence, the above
warning is seen when the pll fails to lock. Remove the pll_u clocks from
the init_table so that software does not try to configure this pll on
boot.Signed-off-by: Jon Hunter
Acked-by: Rhyland Klein
Signed-off-by: Thierry Reding -
The EMC clock sources for Tegra210 currently incorrectly include pll_c2
and pll_c3. However, both of these should have been pll_mb as shown in
the TRM. If Tegra210 happens to be configured such that the pll_mb is the
default clock for the EMC, as configured by the bootloader, then this will
cause a system hang on boot. This is because the kernel will disable the
pll_mb when disabling unused clock as it appears to be unused when it is
not.Also add the additional pll_p clock source for the EMC.
Signed-off-by: Jon Hunter
Acked-by: Rhyland Klein
Signed-off-by: Thierry Reding
