On 26/04/26 12:01PM, Jonathan Cameron wrote: > On Fri, 17 Apr 2026 09:17:30 +0100 > Rodrigo Alencar via B4 Relay <[email protected]> > wrote: > > > From: Rodrigo Alencar <[email protected]> > > > > DT-bindings for AD9910, a 1 GSPS DDS with 14-bit DAC. It includes > > configurations for clocks, DAC current, reset and basic GPIO control. > > > > Signed-off-by: Rodrigo Alencar <[email protected]> > > --- > > .../bindings/iio/frequency/adi,ad9910.yaml | 189 > > +++++++++++++++++++++ > > MAINTAINERS | 7 + > > 2 files changed, 196 insertions(+) > > > > diff --git > > a/Documentation/devicetree/bindings/iio/frequency/adi,ad9910.yaml > > b/Documentation/devicetree/bindings/iio/frequency/adi,ad9910.yaml > > new file mode 100644 > > index 000000000000..61e879bca5c2 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/iio/frequency/adi,ad9910.yaml > > ... > > > + > > + reset-gpios: > > + description: > > + GPIOs controlling the Main Device reset. > > + > > + io-reset-gpios: > > + maxItems: 1 > > + description: > > + GPIO controlling the I/O_RESET pin. > > + > > + powerdown-gpios: > > + maxItems: 1 > > + description: > > + GPIO controlling the EXT_PWR_DWN pin. > > + > > + update-gpios: > > + maxItems: 1 > > + description: > > + GPIO controlling the I/O_UPDATE pin. > > + > > + profile-gpios: > > + minItems: 3 > > + maxItems: 3 > > + description: > > + GPIOs controlling the PROFILE[2:0] pins for profile selection. > > + > > + sync-err-gpios: > > + maxItems: 1 > > + description: > > + GPIO used to read SYNC_SMP_ERR pin status. > Looking at the datasheet there are a few other things that might want to be > here. > > pll-lock for example might be wired to a gpio to allow a check that lock has > occurred. Maybe sync-samp-err as well though possibly that one wants to be an > interrupt?
I can add the lock-detect gpio. sync-samp-err must be a gpio, because it must be used by a calibration routine that modifies sync delays and reads the gpio value to check the sync state. The goal is to find the best delay configs. More details: https://ez.analog.com/cfs-file/__key/communityserver-discussions-components-files/318/3426.Synchronizing-Multiple-AD9910s.pdf -- Kind regards, Rodrigo Alencar
