The timepulse pin is an output that can be used to generate a pulse at a
(configurable) frequency (i.e. it is not an input).
Fixes: dba529605f ("dt-bindings: gnss: Rewrite common bindings in YAML")
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
The u-blox company name is written in lowercase so restore the style
that was used before the binding was converted to YAML.
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
The RESET_N and SAFEBOOT_N pins should typically be left open and only
be connected to ground in rare cases where a device is misbehaving.
Specify GPIO_OPEN_DRAIN in the example as this is what should generally
be used.
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
U-Blox M8/M9 chip have a pin to start it in safeboot mode, to be used
to recover from situations where the flash content has become
corrupted and needs to be restored.
Signed-off-by: Alejandro Enrique <alejandroe1@geotab.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
The CSR GSD4t is a CSR product using the SiRFstarIV core, and
the CSR CSRG05TA03-ICJE-R is a CSR product using the SiRFstarV
core.
These chips have a SRESETN line that can be pulled low to hard
reset the chip and in some designs this is connected to a GPIO,
so add this as an optional property.
Update the example with a reset line so users see that it need
to be tagged as active low.
Cc: devicetree@vger.kernel.org
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220317225844.1262643-4-linus.walleij@linaro.org
Convert the serial slave-device Device Tree binding documentation to
json-schema, and incorporate it into the generic serial bindings.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Add w2sg0004 compatible string since devices without wakeup
pins are now supported.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Add binding for SiRFstar-based GNSS receivers.
Note that while four compatible-strings are initially added representing
devices which differ in which I/O interfaces they support, they
otherwise essentially share the same feature set.
Pin and supply names vary slightly, as do some recommended timings.
Note that the wakeup gpio is not intended to be used as a wakeup source,
but rather to detect the current power state of the device (active or
hibernate).
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add binding for u-blox GNSS receivers.
Note that the u-blox product names encodes form factor (e.g. "neo"),
chipset (e.g. "8") and variant (e.g. "q"), but that only formfactor and
chipset is used for the compatible strings (for now).
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
