linux-toradex.git/Documentation/devicetree/bindings/rtc/rtc.yaml, branch v6.7

dt-bindings: rtc: restrict node name suffixes

2023-06-06T21:38:07+00:00

Make the pattern matching node names a bit stricter to improve DTS
consistency.  The pattern is restricted to:
1. Only one unit address or one -N suffix,
2. -N suffixes to decimal numbers.

Suggested-by: Rob Herring 
Signed-off-by: Krzysztof Kozlowski 
Reviewed-by: Tony Lindgren 
Link: https://lore.kernel.org/r/20230530144851.92059-4-krzysztof.kozlowski@linaro.org
Signed-off-by: Alexandre Belloni

dt-bindings: drop redundant part of title of shared bindings

2022-12-16T17:41:49+00:00

The Devicetree bindings document does not have to say in the title that
it is a "binding", but instead just describe the hardware.  For shared
(re-usable) schemas, name them all as "common properties".

Signed-off-by: Krzysztof Kozlowski 
Acked-by: Guenter Roeck  # watchdog
Acked-by: Alexandre Belloni 
Acked-by: Jonathan Cameron  # IIO
Acked-by: Miquel Raynal 
Acked-by: Ulf Hansson  # MMC
Acked-by: Stephen Boyd  # clk
Acked-by: Vinod Koul  # dma
Acked-by: Mark Brown 
Acked-by: Hans Verkuil  # media
Acked-by: Sebastian Reichel  # power
Acked-by: Viresh Kumar  # opp
Link: https://lore.kernel.org/r/20221216163815.522628-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring

dt-bindings: Cleanup standard unit properties

2021-01-29T22:36:06+00:00

Properties with standard unit suffixes already have a type and don't need
type definitions. They also default to a single entry, so 'maxItems: 1'
can be dropped.

adi,ad5758 is an oddball which defined an enum of arrays. While a valid
schema, it is simpler as a whole to only define scalar constraints.

Cc: Jean Delvare 
Cc: Lars-Peter Clausen 
Cc: Dmitry Torokhov 
Cc: Ulf Hansson 
Cc: "David S. Miller" 
Cc: Jakub Kicinski 
Cc: Serge Semin 
Cc: linux-hwmon@vger.kernel.org
Cc: linux-i2c@vger.kernel.org
Cc: linux-iio@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-input@vger.kernel.org
Cc: linux-mmc@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: linux-rtc@vger.kernel.org
Cc: linux-serial@vger.kernel.org
Cc: alsa-devel@alsa-project.org
Cc: linux-watchdog@vger.kernel.org
Signed-off-by: Rob Herring 
Acked-by: Guenter Roeck 
Acked-by: Mark Brown 
Acked-by: Wolfram Sang  # for I2C
Acked-by: Alexandre Belloni 
Acked-by: Greg Kroah-Hartman 
Acked-by: Sebastian Reichel  # for power-supply
Acked-by: Jonathan Cameron  #for-iio
Acked-by: Alexandre TORGUE 
Link: https://lore.kernel.org/r/20210128194515.743252-1-robh@kernel.org

dt-bindings: rtc: add reset-source property

2020-12-19T00:57:44+00:00

Some RTCs, e.g. the pcf2127, can be used as a hardware watchdog. But
if the reset pin is not actually wired up, the driver exposes a
watchdog device that doesn't actually work.

Provide a standard binding that can be used to indicate that a given
RTC can perform a reset of the machine, similar to wakeup-source.

Suggested-by: Alexandre Belloni 
Signed-off-by: Rasmus Villemoes 
Reviewed-by: Rob Herring 
Signed-off-by: Alexandre Belloni 
Link: https://lore.kernel.org/r/20201218101054.25416-2-rasmus.villemoes@prevas.dk

Merge tag 'rtc-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

2020-10-21T18:22:08+00:00

Pull RTC updates from Alexandre Belloni:
 "A new driver this cycle is making the bulk of the changes and the
  rx8010 driver has been rework to use the modern APIs.

  Summary:

  Subsystem:
   - new generic DT properties: aux-voltage-chargeable,
     trickle-voltage-millivolt

  New driver:
   - Microcrystal RV-3032

  Drivers:
   - ds1307: use aux-voltage-chargeable
   - r9701, rx8010: modernization of the driver
   - rv3028: fix clock output, trickle resistor values, RAM
     configuration registers"

* tag 'rtc-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (50 commits)
  rtc: r9701: set range
  rtc: r9701: convert to devm_rtc_allocate_device
  rtc: r9701: stop setting RWKCNT
  rtc: r9701: remove useless memset
  rtc: r9701: stop setting a default time
  rtc: r9701: remove leftover comment
  rtc: rv3032: Add a driver for Microcrystal RV-3032
  dt-bindings: rtc: rv3032: add RV-3032 bindings
  dt-bindings: rtc: add trickle-voltage-millivolt
  rtc: rv3028: ensure ram configuration registers are saved
  rtc: rv3028: factorize EERD bit handling
  rtc: rv3028: fix trickle resistor values
  rtc: rv3028: fix clock output support
  rtc: mt6397: Remove unused member dev
  rtc: rv8803: simplify the return expression of rv8803_nvram_write
  rtc: meson: simplify the return expression of meson_vrtc_probe
  rtc: rx8010: rename rx8010_init_client() to rx8010_init()
  rtc: ds1307: enable rx8130's backup battery, make it chargeable optionally
  rtc: ds1307: consider aux-voltage-chargeable
  rtc: ds1307: store previous charge default per chip
  ...

dt-bindings: rtc: add trickle-voltage-millivolt

2020-10-19T20:47:56+00:00

Some RTCs have a trickle charge that is able to output different voltages
depending on the type of the connected auxiliary power (battery, supercap,
...). Add a property allowing to specify the necessary voltage.

Signed-off-by: Alexandre Belloni 
Reviewed-by: Rob Herring 
Link: https://lore.kernel.org/r/20201013144110.1942218-1-alexandre.belloni@bootlin.com

dt-bindings: Explicitly allow additional properties in common schemas

2020-10-07T16:30:06+00:00

In order to add meta-schema checks for additional/unevaluatedProperties
being present, all schema need to make this explicit. As common/shared
schema are included by other schemas, they should always allow for
additionalProperties.

Acked-by: Mark Brown 
Acked-by: Krzysztof Kozlowski 
Acked-by: Sebastian Reichel 
Acked-by: Chanwoo Choi 
Acked-By: Vinod Koul 
Acked-by: Lee Jones 
Acked-by: Geert Uytterhoeven 
Acked-by: Srinivas Kandagatla 
Acked-by: Ulf Hansson 
Acked-by: Jonathan Cameron 
Acked-by: Guenter Roeck 
Link: https://lore.kernel.org/r/20201005183830.486085-5-robh@kernel.org
Signed-off-by: Rob Herring

dt-bindings: rtc: let aux-voltage-chargeable supersede trickle-diode-disable

2020-09-24T07:56:03+00:00

Some RTCs can be equipped with a chargeable battery or supercap.
Every RTC allowing this whose driver's implement it are charged by
default. To disable this the trickle-diode-disable flag exists.

If a driver did not support charging and some time later one wants to
add that feature, there is currently no way to do it without breaking
dt backwards compatibility. RTCs on boards without the
trickle-diode-disable flag in their device tree would suddenly charge
their battery/supercap which is a change in behavior.

Change that by introducing aux-voltage-chargeable, not as a flag but as
a uint32 enum allowing to set "do not charge" (0) or "charge" (1). This
dt property is optional, so we can now distinguish these cases.

Care must be taken to support the old behavior for device trees without
aux-voltage-chargeable nonetheless to stay compatible.

Signed-off-by: Bastian Krause 
Signed-off-by: Alexandre Belloni 
Reviewed-by: Rob Herring 
Link: https://lore.kernel.org/r/20200917183246.19446-2-bst@pengutronix.de

dt-bindings: rtc: Add YAML schemas for the generic RTC bindings

2019-06-06T10:00:42+00:00

The real time clocks have a bunch of generic properties that are needed in
a device tree. Add a YAML schemas for those.

Signed-off-by: Maxime Ripard 
Signed-off-by: Alexandre Belloni