in the framework to avoid oops when get_parent ops return out of range
values on tegra platforms.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A few driver fixes for tegra, rockchip, and st SoCs and a two-liner in
the framework to avoid oops when get_parent ops return out of range
values on tegra platforms"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
drivers: clk: st: Rename st_pll3200c32_407_c0_x into st_pll3200c32_cx_x
clk: check for invalid parent index of orphans in __clk_init()
clk: tegra: dfll: Properly protect OPP list
clk: rockchip: add critical clock for rk3368
handful of patches to add more critical clocks on rockchip SoCs that
are affected by newly introduced gpio clock handling.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A couple build fixes for drivers introduced in the merge window and a
handful of patches to add more critical clocks on rockchip SoCs that
are affected by newly introduced gpio clock handling"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: rockchip: Add pclk_peri to critical clocks on RK3066/RK3188
clk: rockchip: add pclk_cpu to the list of rk3188 critical clocks
clk: rockchip: handle critical clocks after registering all clocks
clk: Hi6220: separately build stub clock driver
clk: h8s2678: Fix compile error
Again a result of the gpio-clock-liberation the rk3368 needs the
pclk_pd_pmu marked as critical, to boot successfully.
Reported-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Now that the rockchip clock subsystem does clock gating with GPIO banks,
these are no longer enabled once during probe and no longer stay enabled
for eternity. When all these clocks are disabled, the parent clock pclk_peri
might be disabled too, as no other child claims it. So, we need to add pclk_peri
to the critical clocks.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Tested-by: Michael Niewoehner <linux@mniewoehner.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
pclk_cpu needs to keep running because it is needed for devices like
the act8865 regulator but with the recent gpio clock handling this is
not always the case anymore. So add it to the list of critical clocks.
Signed-off-by: Michael Niewoehner <linux@mniewoehner.de>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Currently the registration of critical clocks is done in the function
shared between rk3066 and rk3188 clock trees. That results in them
getting handled maybe before all of them are registered.
Therefore move the critical clock handling down to the end of the soc-
specific clock registration function, so that all clocks are registered
before they're maybe handled as critical clock.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Michael Niewoehner <linux@mniewoehner.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
cycle
Core changes:
- It is possible configure groups in debugfs.
- Consolidation of chained IRQ handler install/remove replacing
all call sites where irq_set_handler_data() and
irq_set_chained_handler() were done in succession with a
combined call to irq_set_chained_handler_and_data(). This
series was created by Thomas Gleixner after the problem was
observed by Russell King.
- Tglx also made another series of patches switching
__irq_set_handler_locked() for irq_set_handler_locked() which
is way cleaner.
- Tglx also wrote a good bunch of patches to make use of
irq_desc_get_xxx() accessors and avoid looking up irq_descs
from IRQ numbers. The goal is to get rid of the irq number
from the handlers in the IRQ flow which is nice.
Driver feature enhancements:
- Power management support for the SiRF SoC Atlas 7.
- Power down support for the Qualcomm driver.
- Intel Cherryview and Baytrail: switch drivers to use raw
spinlocks in IRQ handlers to play nice with the realtime
patch set.
- Rework and new modes handling for Qualcomm SPMI-MPP.
- Pinconf power source config for SH PFC.
New drivers and subdrivers:
- A new driver for Conexant Digicolor CX92755.
- A new driver for UniPhier PH1-LD4, PH1-Pro4, PH1-sLD8,
PH1-Pro5, ProXtream2 and PH1-LD6b SoC pin control support.
- Reverse-egineered the S/PDIF settings for the Allwinner
sun4i driver.
- Support for Qualcomm Technologies QDF2xxx ARM64 SoCs
- A new Freescale i.mx6ul subdriver.
Cleanup:
- Remove platform data support in a number of SH PFC
subdrivers.
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Merge tag 'pinctrl-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for the v4.3 development
cycle.
Like with GPIO it's a lot of stuff. If my subsystems are any sign of
the overall tempo of the kernel v4.3 will be a gigantic diff.
[ It looks like 4.3 is calmer than 4.2 in most other subsystems, but
we'll see - Linus ]
Core changes:
- It is possible configure groups in debugfs.
- Consolidation of chained IRQ handler install/remove replacing all
call sites where irq_set_handler_data() and
irq_set_chained_handler() were done in succession with a combined
call to irq_set_chained_handler_and_data(). This series was
created by Thomas Gleixner after the problem was observed by
Russell King.
- Tglx also made another series of patches switching
__irq_set_handler_locked() for irq_set_handler_locked() which is
way cleaner.
- Tglx also wrote a good bunch of patches to make use of
irq_desc_get_xxx() accessors and avoid looking up irq_descs from
IRQ numbers. The goal is to get rid of the irq number from the
handlers in the IRQ flow which is nice.
Driver feature enhancements:
- Power management support for the SiRF SoC Atlas 7.
- Power down support for the Qualcomm driver.
- Intel Cherryview and Baytrail: switch drivers to use raw spinlocks
in IRQ handlers to play nice with the realtime patch set.
- Rework and new modes handling for Qualcomm SPMI-MPP.
- Pinconf power source config for SH PFC.
New drivers and subdrivers:
- A new driver for Conexant Digicolor CX92755.
- A new driver for UniPhier PH1-LD4, PH1-Pro4, PH1-sLD8, PH1-Pro5,
ProXtream2 and PH1-LD6b SoC pin control support.
- Reverse-egineered the S/PDIF settings for the Allwinner sun4i
driver.
- Support for Qualcomm Technologies QDF2xxx ARM64 SoCs
- A new Freescale i.mx6ul subdriver.
Cleanup:
- Remove platform data support in a number of SH PFC subdrivers"
* tag 'pinctrl-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (95 commits)
pinctrl: at91: fix null pointer dereference
pinctrl: mediatek: Implement wake handler and suspend resume
pinctrl: mediatek: Fix multiple registration issue.
pinctrl: sh-pfc: r8a7794: add USB pin groups
pinctrl: at91: Use generic irq_{request,release}_resources()
pinctrl: cherryview: Use raw_spinlock for locking
pinctrl: baytrail: Use raw_spinlock for locking
pinctrl: imx6ul: Remove .owner field
pinctrl: zynq: Fix typos in smc0_nand_grp and smc0_nor_grp
pinctrl: sh-pfc: Implement pinconf power-source param for voltage switching
clk: rockchip: add pclk_pd_pmu to the list of rk3288 critical clocks
pinctrl: sun4i: add spdif to pin description.
pinctrl: atlas7: clear ugly branch statements for pull and drivestrength
pinctrl: baytrail: Serialize all register access
pinctrl: baytrail: Drop FSF mailing address
pinctrl: rockchip: only enable gpio clock when it setting
pinctrl/mediatek: fix spelling mistake in dev_err error message
pinctrl: cherryview: Serialize all register access
pinctrl: UniPhier: PH1-Pro5: add I2C ch6 pin-mux setting
pinctrl: nomadik: reflect current input value
...
The structure is xin24m -> pll -> pll-mux (xin24m,pll,xin32k). The pll
does have an init callback to make sure the boot-selected frequency is
using the expected pll settings and resets the same frequency using
the values provided in the driver if necessary.
The setting itself also involves remuxing the pll-mux temporarily to
the xin24m source to let the new pll rate settle. Until now this worked
flawlessly, even when it had the flaw of accessing the mux settings
before the mux actually got registered.
With the recent clock-core conversions this flaw became apparent in
null pointer dereference in
[<c03fc400>] (clk_hw_get_num_parents) from [<c0400df0>] (clk_mux_get_parent+0x14/0xc8)
[<c0400ddc>] (clk_mux_get_parent) from [<c040246c>] (rockchip_rk3066_pll_set_rate+0xd8/0x320)
So to fix that, simply register the pll-mux before the pll, so that
it will be fully initialized when the pll clock executes its init-
callback and possibly touches the pll-mux clock.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Use the provider based method to get a clock's name so that we
can get rid of the clk member in struct clk_hw one day. Mostly
converted with the following coccinelle script.
@@
struct clk_hw *E;
@@
-__clk_get_name(E->clk)
+clk_hw_get_name(E)
Acked-by: Heiko Stuebner <heiko@sntech.de>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Andrew Bresticker <abrestic@chromium.org>
Cc: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Kevin Cernekee <cernekee@chromium.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
pclk_pd_pmu needs to keep running and with the upcoming gpio clock
handling this is not always the case anymore. So add it to the list
of critical clocks for now.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Lin Huang <hl@rock-chips.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Neither spdif_src nor spdif_pll exists, judging by the vendor kernel in
both cases spdif_pre was meant. This brings the naming in line and
hierachy in line with that of sclk_i2s0.
Also allow sclk_spdif and spdif_frac to change their parents rate as
that the upstream dividers are purely there to feed sclk_spdif
Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
In the TRM we see that BWADJ is "a 12-bit bus that selects the values
1-4096 for the bandwidth divider (NB)":
NB = BWADJ[11:0] + 1
The recommended setting of NB: NB = NF / 2.
So:
NB = NF / 2
BWADJ[11:0] + 1 = NF / 2
BWADJ[11:0] = NF / 2 - 1
Right now, we have:
{ \
.rate = _rate##U, \
.nr = _nr, \
.nf = _nf, \
.no = _no, \
.bwadj = (_nf >> 1), \
}
That means we set bwadj to NF / 2, not NF / 2 - 1
All of this is a bit confusing because we specify "NR" (the 1-based
value), "NF" (the 1-based value), "NO" (the 1-based value), but
"BWADJ" (the 0-based value) instead of "NB" (the 1-based value).
Let's change to working with "NB" and fix the off by one error. This
may affect PLL jitter in a small way (hopefully for the better).
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* cleanup-clk-h-includes: (62 commits)
clk: Remove clk.h from clk-provider.h
clk: h8300: Remove clk.h and clkdev.h includes
clk: at91: Include clk.h and slab.h
clk: ti: Switch clk-provider.h include to clk.h
clk: pistachio: Include clk.h
clk: ingenic: Include clk.h
clk: si570: Include clk.h
clk: moxart: Include clk.h
clk: cdce925: Include clk.h
clk: Include clk.h in clk.c
clk: zynq: Include clk.h
clk: ti: Include clk.h
clk: sunxi: Include clk.h and remove unused clkdev.h includes
clk: st: Include clk.h
clk: qcom: Include clk.h
clk: highbank: Include clk.h
clk: bcm: Include clk.h
clk: versatile: Remove clk.h and clkdev.h includes
clk: ux500: Remove clk.h and clkdev.h includes
clk: tegra: Properly include clk.h
...
Clock provider drivers generally shouldn't include clk.h because
it's the consumer API. Only include clk.h if it's actually used.
Cc: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Describe the clock tree and software resets of the rk3368 ARM64 SoC
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Both soc series' have inverters on the hsadc and camera interface clock
paths. So define them using the newly added inverter type.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The review for the new inverter clock type uncovered some issues (missing
headers and name handling) that are also present in the mmc-phase clock
type, I got (to much) inspiration from. Fix these there too.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Most Rockchip socs have optional phase inverters connected to some
clocks that move the clock-phase by 180 degrees.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
[sboyd@codeaurora.org: Dropped lazy part of commit text]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
A clock branch consisting of a mux and divider with non-standard
divider values.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The macros calculate the correct offset from the id in the parameter.
If this parameter does not consist of a single number, the calculation
will return wrong registers in the best case or create unaligned accesses
in the worst case. So protect the calculations against such values.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The video input processor (vip) was called camera interface (cif) on
older socs which seems to have resulted in a copy'n'paste error when
creating the rk3288 camera clocks.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The dwmac ethernet controller on the rk3288 supports phys connected
via rgmii and rmii. With rgmii phys it is expected that the mac clock
is provided externally while with rmii phys the clock can be external
but also generated from the plls. In the later case it of course needs
be at 50MHz, which gets set from the dwmac_rk driver.
As most devices use a rgmii phy it never surfaced so far that the mac
clk mux, doesn't go up one lever to the pll clock in the rmii case with
internal clock generation, as it is missing the CLK_SET_RATE_PARENT flag,
and thus will not set the correct frequency in most cases.
Fixes: b9e4ba5416 ("clk: rockchip: add clock controller for rk3288")
Cc: stable@vger.kernel.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Since commit 2893c37946 ("clk: make strings in parent name arrays
const") the name of parent clocks can be const. So add more const in
several clock drivers.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add missing static to local (file-scope only) symbols.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The statement
static const char *name[];
defines a modifiable array of pointers to constant chars. That is
*name[0] = 'f';
is forbidden, but
name[0] = "f";
is not. So marking an array that is defined as above with __initconst is
wrong. Either an additional const must be added such that the whole
definition reads:
static const char *const name[] __initconst;
or where this is not possible __initdata must be used.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
enhancements and fixes mostly for ARM32, ARM64, MIPS and Power-based
devices. Additionaly the framework core underwent a bit of surgery with
two major changes. The boundary between the clock core and clock
providers (e.g clock drivers) is now more well defined with dedicated
provider helper functions. struct clk no longer maps 1:1 with the
hardware clock but is a true per-user cookie which helps us tracker
users of hardware clocks and debug bad behavior. The second major change
is the addition of rate constraints for clocks. Rate ranges are now
supported which are analogous to the voltage ranges in the regulator
framework. Unfortunately these changes to the core created some
breakeage. We think we fixed it all up but for this reason there are
lots of last minute commits trying to undo the damage.
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Merge tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux
Pull clock framework updates from Mike Turquette:
"The clock framework changes contain the usual driver additions,
enhancements and fixes mostly for ARM32, ARM64, MIPS and Power-based
devices.
Additionally the framework core underwent a bit of surgery with two
major changes:
- The boundary between the clock core and clock providers (e.g clock
drivers) is now more well defined with dedicated provider helper
functions. struct clk no longer maps 1:1 with the hardware clock
but is a true per-user cookie which helps us tracker users of
hardware clocks and debug bad behavior.
- The addition of rate constraints for clocks. Rate ranges are now
supported which are analogous to the voltage ranges in the
regulator framework.
Unfortunately these changes to the core created some breakeage. We
think we fixed it all up but for this reason there are lots of last
minute commits trying to undo the damage"
* tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux: (113 commits)
clk: Only recalculate the rate if needed
Revert "clk: mxs: Fix invalid 32-bit access to frac registers"
clk: qoriq: Add support for the platform PLL
powerpc/corenet: Enable CLK_QORIQ
clk: Replace explicit clk assignment with __clk_hw_set_clk
clk: Add __clk_hw_set_clk helper function
clk: Don't dereference parent clock if is NULL
MIPS: Alchemy: Remove bogus args from alchemy_clk_fgcs_detr
clkdev: Always allocate a struct clk and call __clk_get() w/ CCF
clk: shmobile: div6: Avoid division by zero in .round_rate()
clk: mxs: Fix invalid 32-bit access to frac registers
clk: omap: compile legacy omap3 clocks conditionally
clkdev: Export clk_register_clkdev
clk: Add rate constraints to clocks
clk: remove clk-private.h
pci: xgene: do not use clk-private.h
arm: omap2+ remove dead clock code
clk: Make clk API return per-user struct clk instances
clk: tegra: Define PLLD_DSI and remove dsia(b)_mux
clk: tegra: Add support for the Tegra132 CAR IP block
...
Conflicts:
arch/arm/boot/dts/imx6sx-sdb.dts
net/sched/cls_bpf.c
Two simple sets of overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
we currently only "fake" as the clock gate control is living in a
very strange place, but the watchdog driver needs to read the clock
rate from it and the setting of rk3288 plls to slow mode upon suspend.
Other than that some more exported clocks and a CLK_SET_RATE_PARENT
flag for the uart clocks.
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Merge tag 'v3.20-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next
The two big changes are the additional of the watchdog clock, which
we currently only "fake" as the clock gate control is living in a
very strange place, but the watchdog driver needs to read the clock
rate from it and the setting of rk3288 plls to slow mode upon suspend.
Other than that some more exported clocks and a CLK_SET_RATE_PARENT
flag for the uart clocks.
The pclk supplying the watchdog is controlled via the SGRF register area.
Currently we don't have any clock-type handling external clock bits like
this one. Additionally the SGRF isn't even writable in every boot mode.
But still the clock control is available and in the future someone might
want to use it. Therefore define a simple clock for the time being so
that the watchdog driver can read its rate.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Process-Voltage-Temperatiure Monitor block on RK3288 has two clocks:
PVTM_CORE and PVTM_GPU.
Signed-off-by: Huang Lin <hl@rock-chips.com>
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Use the clock ID for usbphy480m_src so that we can find
this clock node in dts.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Lockdep reported a possible deadlock between the cpuclk lock and for example
the i2c driver.
CPU0 CPU1
---- ----
lock(clk_lock);
local_irq_disable();
lock(&(&i2c->lock)->rlock);
lock(clk_lock);
<Interrupt>
lock(&(&i2c->lock)->rlock);
*** DEADLOCK ***
The generic clock-types of the core ccf already use spin_lock_irqsave when
touching clock registers, so do the same for the cpuclk.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
[mturquette@linaro.org: removed initialization of "flags"]
modify CRU config for GMAC driver
changes since v2:
1. remove SCLK_MAC_PLL
Signed-off-by: Roger Chen <roger.chen@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We've been seeing some crashes at resume time on rk3288-based systems.
On some machines they simply never wake up from suspend. Symptoms
include:
- System clearly got to sleep OK. Power consumption is low, the PWM
for the PWM regulator has stopped, and the "global_pwroff" output
shows that the system is down.
- When system tries to wake up power consumption goes up.
- No kernel resume code (which was left in PMU SRAM) ran. We added
some basic logging to this code (write to a location in SRAM right
at resume time) and didn't see the logging run.
It appears that we can fix the problem by slowing down APLL before we
suspend. On the system I tested things seemed reliable if I disabled
1.8GHz and 1.7GHz. The Mask ROM itself tries to slow things down
(which is why PLLs are in slow mode by the time we get to the kernel),
but apparently it is crashing before it even gets there.
We'll be super paranoid and not just go down to 1.6GHz but we'll match
what the Mask ROM seems to be doing and go into slow mode. We'll also
be safe and put all PLLs (not just APLL) into slow mode (well, except
DPLL which is needed for SDRAM). We'll even put NPLL into slow mode
which the Mask ROM didn't do (not that it's used for much important
stuff at early resume time).
Note that the old Rockchip reference code did something just like
this, though they jammed it into pm.c instead of putting it in the
syscore ops of the clock driver.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Commit 0e5bdb3f9f (clk: rockchip: switch to using the new cpuclk type
for armclk) didn't take into account that the divider used on rk3288
are of the (n+1) type.
The rk3066 and rk3188 socs use more complex divider types making it
necessary for the list-elements to be the real register-values to write.
Therefore reduce divider values in the table accordingly so that they
really are the values that should be written to the registers and match
the dividers actually specified for the rk3288.
Reported-by: Sonny Rao <sonnyrao@chromium.org>
Fixes: 0e5bdb3f9f ("clk: rockchip: switch to using the new cpuclk type for armclk")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Cc: stable@vger.kernel.org
The bit locations indicating the locking status of the plls on rk3066 are
shifted by one to the right when compared to the rk3188, bits [7:4] instead
of [8:5] on the rk3188, thus indicating the locking state of the wrong pll
or a completely different information in case of the gpll.
The recently introduced pll init code exposed that problem on some rk3066
boards when it tried to bring the boot-pll value in line with the value
from the rate table.
Fix this by defining separate pll definitions for rk3066 with the correct
locking indices.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Fixes: 2c14736c75 ("clk: rockchip: add clock driver for rk3188 and rk3066 clocks")
Tested-by: FUKAUMI Naoki <naobsd@gmail.com>
Cc: stable@vger.kernel.org
Do not disable clock gate "hclk_emem_peri", otherwise EMAC clocks no longer work
and it breaks ethernet on RK3066 and RK3188. It fixes a regression introduced by
commit 78eaf6095c ("clk: rockchip: disable unused clocks").
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Fixes: 78eaf6095c ("clk: rockchip: disable unused clocks")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This patch adds CLK_IGNORE_UNUSED flag to hclk_usb_peri, hclk_usbotg0
and hclk_usbotg1 because these clocks must remain enabled to use the
USB controllers in host mode.
This fixes a regression introduced by commit 78eaf6095c
("clk: rockchip: disable unused clocks").
Signed-off-by: Julien CHAUVEAU <julien.chauveau@neo-technologies.fr>
Fixes: 78eaf6095c ("clk: rockchip: disable unused clocks")
Reviewed-by: Romain Perier <romain.perier@gmail.com>
Tested-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
We'd like to be able to set the clock rate of the sclk_uart clocks and
actually be able to achieve clock rates greater than 24MHz. To do
this we need to be able to pass rate changes upward.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
- pll init to allow syncing to actual rate table values
- some more exported clocks
- fixes for some clocks (typos etc) all of them not yet used
in actual drivers
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Merge tag 'v3.19-rockchip-clk2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next
- clock phase setting capability for the rk3288 mmc clocks
- pll init to allow syncing to actual rate table values
- some more exported clocks
- fixes for some clocks (typos etc) all of them not yet used
in actual drivers
This patch adds the 2 physical clocks for the mmc (drive and sample). They're
mostly there for the phase properties, but they also show the true clock
(by dividing by RK3288_MMC_CLKGEN_DIV).
The drive and sample phases are generated by dividing an upstream parent clock
by 2, this allows us to adjust the phase by 90 deg.
There's also an option to have up to 255 delay elements (40-80 picoseconds long).
This driver uses those elements (under the assumption that they're 60 ps long)
to generate approximate 22.5 degrees options. 67.5 (22.5*3) might be as high as
90 deg if the delay elements are as big as 80 ps, so a finer division (smaller
than 22.5) was not picked because the phase might not be monotonic anymore.
Suggested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Alexandru M Stan <amstan@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This exposes the clock that comes out of the i2s block which generally
goes to the audio codec.
Signed-off-by: Sonny Rao <sonnyrao@chromium.org>
[removed CLK_SET_RATE_PARENT from original patch]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The DMC clocks need to be turned off at runtime. Use the newly
assigned clock IDs to export them.
Signed-off-by: Jeff Chen <cym@rock-chips.com>
[dianders: split into two patches; adjusted commit msg]
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add the new flag to gpll and cpll on rk3188 and similar and to
gpll, cpll and npll on rk3288.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Tested-by: Kever Yang <kever.yang@rock-chips.com>
In some cases firmware brings up plls with different parameters than the ones
noted in the rate table for the specific frequency. These firmware-selected
parameters are worse than the tested ones in the pll rate tables but cannot
be changed by a simple clk_set_rate call when the rate stays the same.
Therefore add a ROCKCHIP_PLL_SYNC_RATE flag and implement an init callback
that checks the runtime-parameters against the matching rate table entry
and adjusts them to the table-ones if necessary.
If no rate table is set or the current rate does not match any rate-table
entry no changes are made.
Being able to limit this adjustment to specific plls is necessary to not
touch the ones supplying core components like the apll and dpll supplying
the armcores and dram.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Tested-by: Kever Yang <kever.yang@rock-chips.com>
In some cases we might need to access the data of the pll mux before the actual
mux gets registered - like in the following patch adding an init-callback.
Therefore populate pll_mux before registering the core pll-clock.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Tested-by: Kever Yang <kever.yang@rock-chips.com>
This adds a flag parameter to plls that allows us to create
special flags to tweak the behaviour of the plls if necessary.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Tested-by: Kever Yang <kever.yang@rock-chips.com>
The USB HSIC PHY clock divider is set in the register RK2928_CLKSEL_CON(11).
Signed-off-by: Julien CHAUVEAU <julien.chauveau@neo-technologies.fr>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
