linux-kernel - Re: [PATCH v2 08/17] serial: max310x: use separate regmap name for each port

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Date: Thu, 18 Jan 2024 17:30:16 +0200
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Hugo Villeneuve <hugo@...ovil.com>
Cc: gregkh@...uxfoundation.org, jirislaby@...nel.org, 
	cosmin.tanislav@...log.com, shc_work@...l.ru, linux-kernel@...r.kernel.org, 
	linux-serial@...r.kernel.org, Hugo Villeneuve <hvilleneuve@...onoff.com>, 
	Jan Kundrát <jan.kundrat@...net.cz>
Subject: Re: [PATCH v2 08/17] serial: max310x: use separate regmap name for
 each port

On Thu, Jan 18, 2024 at 5:22 PM Hugo Villeneuve <hugo@...ovil.com> wrote:
>
> From: Hugo Villeneuve <hvilleneuve@...onoff.com>
>
> Use a separate regmap name for each port so they can each have their own
> debugfs entry, allowing to access each port registers independently.
>
> For example, a four channels/ports device like the MAX14830 will have four
> entries in its regmap debugfs:
>
> $ find /sys/kernel/debug/regmap -type d | grep spi0.0

Just a side note for the future. The above is an example of "Useless
use of grep".
`find` has a `-name` parameter for such, using `find ...-name
'spi0.0*'` makes the grep unnecessary.

> /sys/kernel/debug/regmap/spi0.0-port0
> /sys/kernel/debug/regmap/spi0.0-port1
> /sys/kernel/debug/regmap/spi0.0-port2
> /sys/kernel/debug/regmap/spi0.0-port3

-- 
With Best Regards,
Andy Shevchenko