Re: [PATCH v3 0/4] mux: gpio-mux: add enable GPIO support and ADG2404

From: Krzysztof Kozlowski

Date: Fri Jan 16 2026 - 03:37:39 EST


On Thu, Jan 15, 2026 at 02:18:18PM +0200, Antoniu Miclaus wrote:
> This series extends the gpio-mux driver with optional enable GPIO support
> to prevent glitches during channel transitions, then adds support for the
> Analog Devices ADG2404 multiplexer as the first user of this feature.
>
> The enable GPIO allows the multiplexer to be disabled before changing
> address lines and re-enabled after, preventing brief activation of
> unintended channels during transitions. This is particularly important
> for precision analog applications.
>
> The ADG2404 is a 4:1 analog multiplexer with low 0.62Ω on-resistance
> that requires this enable GPIO functionality for glitch-free operation.
>
> Changes in v3:
> * Extend gpio-mux driver instead of creating standalone adg2404 driver
> * Make enable GPIO optional for backward compatibility
> * Add MUX_IDLE_DISCONNECT support via enable GPIO

You are developing on some old kernel. You got stale Cc list of at least
three people! How could you for example get "johan+linaro@xxxxxxxxxx" -
from which maintainer entry - but that at least is not bouncing like two
others.

You must use get_maintainers, not custom templates with fixed outdated
addresses.

Best regards,
Krzysztof