Re: [PATCH v1] Documentation: gpio: pca953x: clarify interrupt source detection

[Andy Shevchenko]

On Wed, Jan 07, 2026 at 10:31:22AM +0100, Ernest Van Hoecke wrote:

> There are multiple design tradeoffs and considerations in how the
> PCA953x driver detects the source(s) of an interrupt. This driver
> supports PCAL variants with input latching, a feature that is
> constrained by the fact that the interrupt status and input port
> registers cannot be read atomically. These limits and the design
> decisions deserve an in-depth explanation.
> 
> Update the documentation to clarify these hardware limits and describe
> how the driver determines pending interrupts, and how it makes use of
> the PCAL input latching.

Thank you very much for this piece!
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>

-- 
With Best Regards,
Andy Shevchenko