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From: Rob Herring <robh@kernel.org>
To: Marek Vasut <marex@denx.de>
Cc: linux-clk@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	devicetree@vger.kernel.org
Subject: Re: [PATCH v3 1/2] dt-bindings: clk: Introduce 'critical-clocks' property
Date: Wed, 1 Jun 2022 14:58:59 -0500	[thread overview]
Message-ID: <20220601195859.GA328329-robh@kernel.org> (raw)
In-Reply-To: <20220517235919.200375-1-marex@denx.de>

On Wed, May 18, 2022 at 01:59:18AM +0200, Marek Vasut wrote:
> Some platforms require select clock to be always running, e.g. because
> those clock supply vital devices which are not otherwise attached to
> the system and thus do not have a matching DT node and clock consumer.
> 
> An example is a system where the SoC serves as a crystal oscillator
> replacement for a programmable logic device. The "critical-clocks"
> property of a clock controller allows listing clock which must never
> be turned off.
> 
> Clock listed in the "critical-clocks" property may have other consumers
> in DT, listing the clock in "critical-clocks" only assures those clock
> are never turned off, and none of these optional additional consumers
> can turn the clock off either.
> 
> The implementation is modeled after "protected-clocks".
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Michael Turquette <mturquette@baylibre.com>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Stephen Boyd <sboyd@kernel.org>
> Cc: devicetree@vger.kernel.org
> To: linux-clk@vger.kernel.org
> ---
> V2: Update the commit message to clarify the behavior
> V3: s@Some platforms require clock@Some platforms require some clocks@
> ---
>  .../devicetree/bindings/clock/clock-bindings.txt | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)

This file is removed upstream as it is replaced by the schema in 
dtschema. 

But I'd wait to see what Stephen says. I'm fine with the addition.

Rob

  parent reply	other threads:[~2022-06-01 20:45 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-17 23:59 [PATCH v3 1/2] dt-bindings: clk: Introduce 'critical-clocks' property Marek Vasut
2022-05-17 23:59 ` [PATCH v3 2/2] " Marek Vasut
2022-06-15 20:33   ` Stephen Boyd
2022-06-01 19:58 ` Rob Herring [this message]
2022-06-15 20:10 ` [PATCH v3 1/2] dt-bindings: " Stephen Boyd
2022-06-15 21:55   ` Marek Vasut
2022-06-15 22:22     ` Stephen Boyd
2022-06-15 23:42       ` Marek Vasut
2022-06-16  0:14         ` Stephen Boyd

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