Re: [PATCH 0/2] Add driver for DAC8163:

[Andy Shevchenko]

On Tue, Jun 23, 2026 at 06:07:26PM +0200, Lukas Metz wrote:
> This series adds an IIO driver for the Texas Instruments DAC7562, DAC7563,
> DAC8162, DAC8163, DAC8562, and DAC8563 dual-channel voltage-output DACs.
> 
> These devices are pin-compatible 12-, 14-, and 16-bit variants sharing the
> same 24-bit SPI command interface. Each device provides two independently
> addressable output channels and includes a 2.5 V, 4 ppm/°C internal
> reference that can be enabled via device tree, or an external reference
> supplied through a regulator. The register and command structure differs
> from already existing drivers which makes adding a new driver a
> reasonable choice in my opinion.
> 
> The driver supports:
>  - All six device variants via a shared chip info table
>  - DAC updates in synchronous mode
>  - Configurable internal or external voltage reference
>  - Optional LDAC GPIO which has to be asserted permanently when using
>    synchronous updates.
>  - IIO_CHAN_INFO_RAW and IIO_CHAN_INFO_SCALE attributes per channel
> 
> Datasheet (DAC8163):
>   https://www.ti.com/lit/gpn/dac8163

Why do we need a brand new driver? Do we have an existing one that may be
expanded to support this HW? (Note, not all existing drivers are under IIO
folder, some of them might be found in hwmon, input, or drivers/misc.)

> The driver was tested with a DAC8163 on a custom STM32MP157F board with
> external reference enabled.

-- 
With Best Regards,
Andy Shevchenko