Subsystem:
- new %ptR printk format
- rename core files
- allow registration of multiple nvmem devices
New driver:
- i.MX system controller RTC
Drivers:
- abx80x: handle voltage ioctls, correct binding doc
- m41t80: correct month in alarm reads
- pcf85363: add pcf85263 support
- pcf8523: properly handle battery low flag
- s3c: limit alarm to one year in the future as ALMYEAR is broken
- sun6i: rework clock output binding
-----BEGIN PGP SIGNATURE-----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=5He5
-----END PGP SIGNATURE-----
Merge tag 'rtc-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"Subsystem:
- new %ptR printk format
- rename core files
- allow registration of multiple nvmem devices
New driver:
- i.MX system controller RTC
Driver updates:
- abx80x: handle voltage ioctls, correct binding doc
- m41t80: correct month in alarm reads
- pcf85363: add pcf85263 support
- pcf8523: properly handle battery low flag
- s3c: limit alarm to one year in the future as ALMYEAR is broken
- sun6i: rework clock output binding"
* tag 'rtc-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (54 commits)
rtc: rename core files
rtc: nvmem: fix possible use after free
rtc: add i.MX system controller RTC support
dt-bindings: fsl: scu: add rtc binding
rtc: pcf2123: Add Microcrystal rv2123
rtc: class: reimplement devm_rtc_device_register
rtc: enforce rtc_timer_init private_data type
rtc: abx80x: Implement RTC_VL_READ,CLR ioctls
rtc: pcf85363: Add support for NXP pcf85263 rtc
dt-bindings: rtc: pcf85363: Document pcf85263 real-time clock
rtc: pcf8523: don't return invalid date when battery is low
dt-bindings: rtc: use a generic node name for ds1307
PM: Switch to use %ptR
m68k/mac: Switch to use %ptR
Input: hp_sdc_rtc - Switch to use %ptR
rtc: tegra: Switch to use %ptR
rtc: s5m: Switch to use %ptR
rtc: s3c: Switch to use %ptR
rtc: rx8025: Switch to use %ptR
rtc: rx6110: Switch to use %ptR
...
Add a compatible string for Microcrystal rv2123 as the reset procedure seem
to be differing. However, the current driver works just fine.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The pcf85263 RTC is compatible with the pcf85363 RTC.
The difference between the pcf85263 and pcf85363 RTC is that the latter has
64 bytes more RAM. This renders them incompatible from a DT point of view.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The example should follow the practice or using a generic node name
instead of the precise programming model, as recommended by the DTSpec.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The register range for the RTC extends beyond 0x54.
Use the size from the user manual's memory map instead.
Fixes: 9765d2d943 ("rtc: sun6i: Add sun6i RTC driver")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Experiments showed that on at least the H3/H5/A64 the RTC's internal
oscillator also feeds the CPUS mux in the PRCM.
Export this clock through the device tree, instead of having to use
a dummy fixed-clock device node, for the PRCM to consume. This will
properly describe the relationship between the clocks.
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The A31 does not have an external clock output directly from the RTC.
Instead, it has four muxable clock outputs: three (A, B, C) are
controlled from the CCU, and the last (D) is controlled from the PRCM.
Deprecate the usage of the external clock output for the A31 compatible.
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
While doing Bluetooth enablement for various boards based on various
Allwinner SoCs, minor differences in the RTC modules were found. These
include a lack of an external clock output (A31), different internal
oscillator frequencies (H3/H5/A64/V3/V3s), different regulator voltage
settings (H5/H6), and the presence of miscellaneous registers unrelated
to the RTC (A64/R40/H5/H6). The datasheet also describes different number
of registers for non-volatile storage, though based on actual experiments
the actual number is the same across the board.
This patch adds a list of all pre-H6 variants, grouped by the internal
oscillator's clock rate, regulator settings, and the presence of the
external clock output. Combinations are introduced for the variants that
have miscellaneous registers.
The RTC block in the H6 also handles the 24 MHz DCXO. This will require
more device tree binding changes and will be done later.
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The clock output section for this binding describes the two outputs in
the descriptions for both the #clock-cells and clock-output-names
properties.
Instead of overlapping information that is hard to read, rewrite the
clock outputs as a list of indices and descriptions. The properies
can reference this list instead. This will also make it easier to
add notes or conditions to the clocks, and also for adding new outputs.
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Move trivial RTCs to the rtc generic binding documentation as they all also
support at least 'start-year'.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Rob Herring <robh@kernel.org>
The abracon,tc-resistor property value is in kOhm.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Subsystem:
- new helpers to add custom sysfs attributes
- struct rtc_task removal along with rtc_irq_register/rtc_irq_unregister
- rtc_irq_set_state and rtc_irq_set_freq are not exported anymore
Drivers:
- armada38x: reset after rtc power loss
- ds1307: now supports m41t11
- isl1208: now supports isl1219 and tamper detection
- pcf2127: internal SRAM support
-----BEGIN PGP SIGNATURE-----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=cAQ9
-----END PGP SIGNATURE-----
Merge tag 'rtc-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"It is now possible to add custom sysfs attributes while avoiding a
possible race condition. Unused code has been removed resulting in a
nice reduction of the code base. And more drivers have been switched
to SPDX by their maintainers.
Summary:
Subsystem:
- new helpers to add custom sysfs attributes
- struct rtc_task removal along with rtc_irq_[un]register()
- rtc_irq_set_state and rtc_irq_set_freq are not exported anymore
Drivers:
- armada38x: reset after rtc power loss
- ds1307: now supports m41t11
- isl1208: now supports isl1219 and tamper detection
- pcf2127: internal SRAM support"
* tag 'rtc-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (34 commits)
rtc: ds1307: simplify hwmon config
rtc: s5m: Add SPDX license identifier
rtc: maxim: Add SPDX license identifiers
rtc: isl1219: add device tree documentation
rtc: isl1208: set ev-evienb bit from device tree
rtc: isl1208: Add "evdet" interrupt source for isl1219
rtc: isl1208: add support for isl1219 with tamper detection
rtc: sysfs: facilitate attribute add to rtc device
rtc: remove struct rtc_task
char: rtc: remove task handling
rtc: pcf85063: preserve control register value between stop and start
rtc: sh: remove unused variable rtc_dev
rtc: unexport rtc_irq_set_*
rtc: simplify rtc_irq_set_state/rtc_irq_set_freq
rtc: remove irq_task and irq_task_lock
rtc: remove rtc_irq_register/rtc_irq_unregister
rtc: sh: remove dead code
rtc: sa1100: don't set PIE frequency
rtc: ds1307: support m41t11 variant
rtc: ds1307: fix data pointer to m41t0
...
The devicetree documentation for the ISL1219 device tree
binding is added with a short example. It is not a trivial
device, because it supports two interrupt sources.
Signed-off-by: Denis Osterland <Denis.Osterland@diehl.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
'interrupt-parent' is often documented as part of define bindings, but
it is really outside the scope of a device binding. It's never required
in a given node as it is often inherited from a parent node. Or it can
be implicit if a parent node is an 'interrupt-controller' node. So
remove it from all the binding files.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
The m41t11 variant is very similar to the already supported m41t00 and
m41t0, but it has also 56 bytes of NVRAM.
Add it to driver taking into account NVRAM section.
Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
RTC embedded in stm32mp1 SoC is slightly different from stm32h7 one, it
doesn't require to disable backup domain write protection, and rtc_ck
parent clock assignment isn't allowed.
To sum up, stm32mp1 RTC requires 2 clocks, pclk and rtc_ck, and an RTC
alarm interrupt.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
According to Devicetree Specification v0.2 document:
"The name of a node should be somewhat generic, reflecting the function
of the device and not its precise programming model."
Do as suggested in the binding example.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
RTC driver should not be aware of the PWR registers offset and bits
position. Furthermore, we can imagine that Disable Backup Protection (DBP)
relative register and bit mask could change depending on the SoC. So this
patch moves st,syscfg property from single pwrcfg phandle to pwrcfg
phandle/offset/mask triplet.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Acked-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The ISL12026 is a combination RTC and EEPROM device with I2C
interface. The standard RTC driver interface is provided. The EEPROM
is accessed via the NVMEM interface.
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Document the binding for i.MX53 SRTC implemented by rtc-mxc_v2
Signed-off-by: Patrick Bruenn <p.bruenn@beckhoff.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Subsystem:
- Fix setting the alarm to the next expiring timer
New driver:
- Mediatek MT7622 RTC
- NXP PCF85363
- Spreadtrum SC27xx PMIC RTC
Drivers:
- Use generic nvmem to expose the Non volatile ram for ds1305, ds1511,
m48t86 and omap
- abx80x: solve possible race condition at probe
- armada38x: support trimming the RTC oscillator
- at91rm9200: fix reading the alarm value at boot
- ds1511: allow waking platform
- m41t80: rework square wave output
- pcf8523: support trimming the RTC oscillator
- pcf8563: fix clock output rate
- pl031: make interrupt optional
- xgene: fix suspend/resume
-----BEGIN PGP SIGNATURE-----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=tRVi
-----END PGP SIGNATURE-----
Merge tag 'rtc-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"There is nothing scary this cycle, mostly driver fixes and updates.
The core fix has been in for a while and has been tested on multiple
kernel revisions by multiple teams.
Core:
- Fix setting the alarm to the next expiring timer
New drivers:
- Mediatek MT7622 RTC
- NXP PCF85363
- Spreadtrum SC27xx PMIC RTC
Drivers updates:
- Use generic nvmem to expose the Non volatile ram for ds1305,
ds1511, m48t86 and omap
- abx80x: solve possible race condition at probe
- armada38x: support trimming the RTC oscillator
- at91rm9200: fix reading the alarm value at boot
- ds1511: allow waking platform
- m41t80: rework square wave output
- pcf8523: support trimming the RTC oscillator
- pcf8563: fix clock output rate
- pl031: make interrupt optional
- xgene: fix suspend/resume"
* tag 'rtc-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (50 commits)
dt-bindings: rtc: imxdi: Improve the bindings text
rtc: sc27xx: Add Spreadtrum SC27xx PMIC RTC driver
dt-bindings: rtc: Add Spreadtrum SC27xx RTC documentation
rtc: at91rm9200: fix reading alarm value
rtc: at91rm9200: stop calculating yday in at91_rtc_readalarm
rtc: sysfs: Use time64_t variables to set time/alarm
rtc: xgene: mark PM functions as __maybe_unused
rtc: xgene: Fix suspend/resume
rtc: pcf8563: don't alway enable the alarm
rtc: pcf8563: fix output clock rate
rtc: rx8010: Fix for incorrect return value
rtc: rx8010: Specify correct address for RX8010_RESV31
rtc: rx8010: Remove duplicate define
rtc: m41t80: remove unneeded checks from m41t80_sqw_set_rate
rtc: m41t80: avoid i2c read in m41t80_sqw_is_prepared
rtc: m41t80: avoid i2c read in m41t80_sqw_recalc_rate
rtc: m41t80: fix m41t80_sqw_round_rate return value
rtc: m41t80: m41t80_sqw_set_rate should return 0 on success
rtc: add support for NXP PCF85363 real-time clock
rtc: omap: Support scratch registers
...
Improve the bindings text by doing the following changes:
- Remove the i.MX53 reference, as the RTC on i.MX53 is a different hardware
- Add 'clocks' to the list of required properties
- Explain that the optional security violation irq is the second entry
- Use the real unit address and irq numbers for i.MX25
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Acked-by: Juergen Borleis <jbe@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This patch adds the binding documentation for Spreadtrum SC27xx series
RTC device.
Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Improve the binding example by removing all the leading zeros to fix the
following dtc warnings:
Warning (unit_address_format): Node /XXX unit name should not have leading 0s
Converted using the following command:
perl -p -i -e 's/\@0+([0-9a-f])/\@$1/g' `find ./Documentation/devicetree/bindings "*.txt"`
Some unnecessary changes were manually fixed.
Signed-off-by: Marco Franchi <marco.franchi@nxp.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Note that alarms are not currently implemented.
64 bytes of nvmem is supported and exposed in
sysfs (# is the instance number, starting with 0):
/sys/bus/nvmem/devices/pcf85363-#/nvmem
Signed-off-by: Eric Nelson <eric@nelint.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Tested-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Add device-tree binding for MediaTek SoC based RTC
Cc: devicetree@vger.kernel.org
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Now that there is documentation for the ds1307 and compatible RTCs, merge
the ds1339 documentation in it.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Rob Herring <robh@kernel.org>
The ST M41T80 family of RTC are not trivial devices, document them.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Add device tree bindings for the SiRFSoC Real Time Clock.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Add device tree bindings for the ST-Ericsson COH 901 331 Real Time Clock
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Pretty much any node can have a status property, so it doesn't need to
be in examples.
Converted with the following command and removed examples with SoC and
board specific splits:
git grep -l -E 'status.*=.*' Documentation/devicetree/ | xargs sed -i -E '/\sstatus.*=.*"(disabled|ok|okay)/d'
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Add a binding for the RTC on the Realtek RTD119x/RTD129x SoC families.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
The RTC can output its 32kHz clock outside of the SoC, for example to clock
a WiFi chip.
Create a new clock that other devices will be able to retrieve, while
maintaining the DT stability by providing a default name for that clock if
clock-output-names doesn't list one.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Add documentation for DT binding of Goldfish RTC driver. The compatible
string used by OS for binding the driver is "google,goldfish-rtc".
Signed-off-by: Miodrag Dinic <miodrag.dinic@imgtec.com>
Signed-off-by: Goran Ferenc <goran.ferenc@imgtec.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Commit 8b44f5be20 ("ARM: dts: armada: replace isil,irq2-can-wakeup-machine with wakeup-source property")
removed the last usage of "isil,irq2-can-wakeup-machine" almost
two years ago. So I think we can get rid of supporting this
legacy binding.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This patch documents support for STM32H7 Real Time Clock.
It introduces a new compatible and rework clock definitions.
On STM32H7 we have a 'pclk' clock for register access, in addition to
the 'rtc_ck' clock.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
The Gemini RTC is actually a standard IP block from Faraday
Technology called FTRTC010. Rename the bindings, add the
generic compatible string and add definitions for the two
available clocks.
Cc: devicetree@vger.kernel.org
Cc: Po-Yu Chuang <ratbert@faraday-tech.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Document the binding for the Broadcom STB SoCs wake-up timer node
allowing the system to generate alarms and exit low power states.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Add the binding documentation for rtc-sh which is an RTC for
SuperH and RZ/A SoCs.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This driver supports the Motorola CPCAP PMIC found on
some of Motorola's mobile phones, such as the Droid 4.
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
The Armada 7K/8K use the same RTC IP than the Armada 38x. However the SOC
integration differs in 2 points:
- MBUS bridge timing initialization
- IRQ configuration at SoC level
Moreover the Armada 7K/8K have an issue preventing to get the interrupt
from alarm 1. This commit allows to use alarm 2 for these A7K/8K but to
still use alarm 1 for the Armada 38x.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
There are currently two broken bindings descriptions for RTC:
maxim,ds3231.txt
pcf8563.txt
They broke because of a improper RST documentation conversion with
commit 8c27ceff36 ("docs: fix locations of several documents that got
moved") and now reference to a non-existing file:
Documentation/devicetree/bindings/i2c/trivial-admin-guide/devices.rst
However, the original reference to i2c/trivial-devices should have never
been made in the first place.
This change fixes this issue by replacing with correct descriptions.
Reported-by: Wolfram Sang <wsa@the-dreams.de>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
The RTC controls the input source of the main 32kHz oscillator in the
system, feeding it to the clock unit too.
By default, this is using an internal, very inaccurate (+/- 30%)
oscillator with a divider to make it roughly around 32kHz. This is however
quite impractical for the RTC, since our time will not be tracked properly.
Since this oscillator is an input of the main clock unit, and since that
clock unit will be probed using CLK_OF_DECLARE, we have to use it as well,
leading to a two stage probe: one to enable the clock, the other one to
enable the RTC.
There is also a slight change in the binding that is required (and should
have been from the beginning), since we'll need a phandle to the external
oscillator used on that board. We support the old binding by not allowing
to switch to the external oscillator and only using the internal one (which
was the previous behaviour) in the case where we're missing that phandle.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This patch adds documentation of device tree bindings for the STM32 RTC.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Document the DryIce security violation interrupt.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Subsystem:
- non-modular drivers are now explicitly non-modular
New driver:
- Epson Toyocom rtc-7301sf/dg
Drivers:
- cmos: reject unsupported alarm values wrt the RTC capabilities
- ds1307: ACPI support
- jz4740: DT support, jz4780 handling, can now be used as a system power
controller
- mcp795: many fixes, in particular proper month handling
- twl: driver is now DT only
-----BEGIN PGP SIGNATURE-----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=z4SX
-----END PGP SIGNATURE-----
Merge tag 'rtc-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"Subsystem:
- non-modular drivers are now explicitly non-modular
New driver:
- Epson Toyocom rtc-7301sf/dg
Drivers:
- cmos: reject unsupported alarm values wrt the RTC capabilities
- ds1307: ACPI support
- jz4740: DT support, jz4780 handling, can now be used as a system
power controller
- mcp795: many fixes, in particular proper month handling
- twl: driver is now DT only"
* tag 'rtc-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (31 commits)
rtc: mcp795: Fix whitespace and indentation.
rtc: mcp795: Prefer using the BIT() macro.
rtc: mcp795: fix month write resetting date to 1.
rtc: mcp795: fix time range difference between linux and RTC chip.
rtc: mcp795: fix bitmask value for leap year (LP).
rtc: mcp795: use bcd2bin/bin2bcd.
rtc: add support for EPSON TOYOCOM RTC-7301SF/DG
rtc: ds1307: Add ACPI support
rtc: imxdi: (trivial) fix a typo
rtc: ds1374: Merge conditional + WARN_ON()
rtc: twl: make driver DT only
rtc: twl: kill static variables
rtc: fix typos in Kconfig
rtc: jz4740: make the driver builtin only
rtc: jz4740: remove unused EXPORT_SYMBOL
Documentation: bindings: fix twl-rtc documentation
rtc: Enable compile testing for Maxim and Samsung drivers
MIPS: jz4740: Remove obsolete code
MIPS: qi_lb60: Probe RTC driver from DT and use it as power controller
MIPS: jz4740: DTS: Probe the jz4740-rtc driver from devicetree
...
