linux-kernel - Re: [PATCH 2/2] counter: microchip-tcb-capture: Add support for RC Compare

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Message-ID: <Z86yT0WoGbX7JXND@ishi>
Date: Mon, 10 Mar 2025 18:35:11 +0900
From: William Breathitt Gray <wbg@...nel.org>
To: Csókás Bence <csokas.bence@...lan.hu>
Cc: Kamel Bouhara <kamel.bouhara@...tlin.com>, linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/2] counter: microchip-tcb-capture: Add support for RC
 Compare

On Mon, Mar 10, 2025 at 09:38:13AM +0100, Csókás Bence wrote:
> Hi,
> 
> On 2025. 03. 06. 8:05, William Breathitt Gray wrote:
> > In Capture mode, the RC register serves as a compare register for the
> > Timer Counter Channel. When a the Counter Value reaches the RC value, a
> > RC Compare event occurs (COUNTER_EVENT_THRESHOLD). This patch exposes
> > the RC register to userspace as the 'compare' Count extension, thus
> > allowing users to configure the threshold condition for these events.
> > 
> > Signed-off-by: William Breathitt Gray <wbg@...nel.org>
> 
> I'm assuming you'll merge it with my capture extensions patch. Will this
> `compare` extension be carried over to 104-quad-8 as well? Otherwise:
> 
> Acked-by: Bence Csókás <csokas.bence@...lan.hu>
> 
> Bence

Thank you for the Ack, I've merged this series now and pushed it to
counter-next.

The compare functionality is already exposed through the `preset`
component in the 104-quad-8 module, so I decided not to add a `compare`
because it felt redundant. However, I'm certain `compare` will be useful
in future drivers so that's why I want to get it merged with the rest of
the microchip-tcb-capture changes. :-)

Best regards,

William Breathitt Gray

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