linux-kernel - Re: [RFC 3/3] Documentation ABI: add PPS generators documentaion

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Message-ID: <2024100819-wildlife-counting-6c63@gregkh>
Date: Tue, 8 Oct 2024 17:43:49 +0200
From: Greg KH <greg@...ah.com>
To: Rodolfo Giometti <giometti@...eenne.com>
Cc: linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>, corbet@....net,
	Hall Christopher S <christopher.s.hall@...el.com>,
	Mohan Subramanian <subramanian.mohan@...el.com>, tglx@...utronix.de,
	andriy.shevchenko@...ux.intel.com,
	Dong Eddie <eddie.dong@...el.com>, N Pandith <pandith.n@...el.com>,
	T R Thejesh Reddy <thejesh.reddy.t.r@...el.com>,
	Zage David <david.zage@...el.com>,
	Chinnadurai Srinivasan <srinivasan.chinnadurai@...el.com>
Subject: Re: [RFC 3/3] Documentation ABI: add PPS generators documentaion

On Tue, Oct 08, 2024 at 03:50:33PM +0200, Rodolfo Giometti wrote:
> This patch adds the documentation for the ABI between the Linux kernel
> and userspace regarding the PPS generators.
> 
> Signed-off-by: Rodolfo Giometti <giometti@...eenne.com>
> ---
>  Documentation/ABI/testing/sysfs-pps-gen | 44 +++++++++++++++++++++++++
>  1 file changed, 44 insertions(+)
>  create mode 100644 Documentation/ABI/testing/sysfs-pps-gen
> 
> diff --git a/Documentation/ABI/testing/sysfs-pps-gen b/Documentation/ABI/testing/sysfs-pps-gen
> new file mode 100644
> index 000000000000..9ad066cb3ce5
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-pps-gen
> @@ -0,0 +1,44 @@
> +What:		/sys/class/pps-gen/
> +Date:		October 2024
> +Contact:	Rodolfo Giometti <giometti@...eenne.com>
> +Description:
> +		The /sys/class/pps-gen/ directory will contain files and
> +		directories that will provide a unified interface to
> +		the PPS generators.
> +
> +What:		/sys/class/pps-gen/pps-genX/
> +Date:		October 2024
> +Contact:	Rodolfo Giometti <giometti@...eenne.com>
> +Description:
> +		The /sys/class/pps-gen/pps-genX/ directory is related to X-th
> +		PPS generator into the system. Each directory will
> +		contain files to manage and control its PPS generator.
> +
> +What:		/sys/class/pps-gen/pps-genX/enable
> +Date:		October 2024
> +Contact:	Rodolfo Giometti <giometti@...eenne.com>
> +Description:
> +		This write-only file enables or disables generation of the
> +		PPS signal.
> +
> +What:		/sys/class/pps-gen/pps-genX/name
> +Date:		October 2024
> +Contact:	Rodolfo Giometti <giometti@...eenne.com>
> +Description:
> +		This read-only file reports the name of the X-th generator.

Again, why a name?  What is that for?

> +
> +What:		/sys/class/pps-gen/pps-genX/system
> +Date:		October 2024
> +Contact:	Rodolfo Giometti <giometti@...eenne.com>
> +Description:
> +		This read-only file returns "1" if the generator takes the
> +		timing from the system clock, while it returns "0" if not
> +		(i.e. from a peripheral device clock).
> +
> +What:		/sys/class/pps-gen/pps-genX/time
> +Date:		October 2024
> +Contact:	Rodolfo Giometti <giometti@...eenne.com>
> +Description:
> +		This read-only file contains the current time stored into the
> +		generator clock as two integers representing the current time
> +		seconds and nanoseconds. 

Trailing whitespace, please always run checkpatch.pl.

thanks,

greg k-h