From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
To: Rob Herring <robh@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Arnd Bergmann <arnd@arndb.de>,
linux-clk@vger.kernel.org, Guenter Roeck <linux@roeck-us.net>
Subject: Re: [PATCH 1/2] dt-bindings: misc: add binding for generic ripple counter
Date: Mon, 8 Mar 2021 21:02:29 +0100 [thread overview]
Message-ID: <12be138b-631a-4f82-aae9-6bbdc7bc2bcf@rasmusvillemoes.dk> (raw)
In-Reply-To: <20210308172153.GA2505339@robh.at.kernel.org>
On 08/03/2021 18.21, Rob Herring wrote:
> On Fri, Feb 26, 2021 at 03:14:10PM +0100, Rasmus Villemoes wrote:
>> While a ripple counter can not usually be interfaced with (directly)
>> from software, it may still be a crucial component in a board
>> layout. To prevent its input clock from being disabled by the clock
>> core because it apparently has no consumer, one needs to be able to
>> represent that consumer in DT.
>
> I'm okay with this as it is describing h/w, but we already
> 'protected-clocks' property which should work.
Hm. Unless
https://lore.kernel.org/lkml/20200903040015.5627-2-samuel@sholland.org/
gets merged, I don't see how this would work out-of-the-box.
Note that I sent a completely different v2, which made the gpio-wdt the
clock consumer based on feedback from Guenter and Arnd, but that v2
isn't suitable for our case because it post-poned handling of the
watchdog till after i2c is ready, which is too late. Somewhat similar to
https://lore.kernel.org/lkml/20210222171247.97609-2-sebastian.reichel@collabora.com/
it seems.
>> +
>> +Required properties:
>> +- compatible: Must be "linux,ripple-ctr".
>
> Nothing linux specific about this.
True, but I was following the lead of the existing gpio-wdt binding. Is
there some other "vendor" name one can and should use for completely
generic and simple components like these? "generic"?
Rasmus
next prev parent reply other threads:[~2021-03-08 20:03 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 14:14 [PATCH 0/2] add ripple counter dt binding and driver Rasmus Villemoes
2021-02-26 14:14 ` [PATCH 1/2] dt-bindings: misc: add binding for generic ripple counter Rasmus Villemoes
2021-03-08 17:21 ` Rob Herring
2021-03-08 20:02 ` Rasmus Villemoes [this message]
2021-03-08 21:38 ` Rob Herring
2021-03-09 7:39 ` Rasmus Villemoes
2021-03-09 15:44 ` Rob Herring
2021-02-26 14:14 ` [PATCH 2/2] drivers: misc: add ripple counter driver Rasmus Villemoes
2021-02-28 5:47 ` Chen, Mike Ximing
[not found] ` <CAHp75Vc8S2E0vWFcqK-jO9Nhd-Us_7t-aWNj-7k+fWDcqR1XkQ@mail.gmail.com>
2021-02-28 9:29 ` Andy Shevchenko
2021-02-28 9:33 ` Andy Shevchenko
2021-03-01 8:29 ` Rasmus Villemoes
2021-02-26 14:35 ` [PATCH 0/2] add ripple counter dt binding and driver Arnd Bergmann
2021-02-26 16:35 ` Rasmus Villemoes
2021-02-26 19:53 ` Guenter Roeck
2021-03-01 8:34 ` Rasmus Villemoes
2021-03-01 9:44 ` Arnd Bergmann
2021-03-01 14:21 ` Guenter Roeck
2021-03-04 22:12 ` [PATCH v2 0/3] add "delay" clock support to gpio_wdt Rasmus Villemoes
2021-03-04 22:12 ` [PATCH v2 1/3] clk: add devm_clk_prepare_enable() helper Rasmus Villemoes
2021-03-09 5:28 ` Guenter Roeck
2022-03-05 2:41 ` Dmitry Torokhov
2021-03-04 22:12 ` [PATCH v2 2/3] dt-bindings: watchdog: add optional "delay" clock to gpio-wdt binding Rasmus Villemoes
2021-03-04 22:12 ` [PATCH v2 3/3] watchdog: gpio_wdt: implement support for optional "delay" clock Rasmus Villemoes
2021-03-09 5:51 ` [PATCH v2 0/3] add "delay" clock support to gpio_wdt Guenter Roeck
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