Subject: Re: [PATCH v2 1/1] ARM: dts: aspeed: santabarbara: Add system monitoring GPIOs

From: Andrew Jeffery <[email-masked]>
Date: Mon, 18 May 2026 20:52:02 +0930

Hi Fred,

On Tue, 2026-04-21 at 21:03 +0800, Fred Chen wrote:
> Add several GPIO expanders to the Santabarbara platform, with ioexp0
> (0x20) configured to aggregate interrupt signals from downstream
> expanders to optimize sideband pin usage.

Can you provide a bit more context? Is this the result of a broader
design change? Or is it a case of adding descriptions of hardware that
was already present in the design?

Andrew