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From: Vyacheslav Yurkov <uvv.mail@gmail.com>
To: Jerome Brunet <jbrunet@baylibre.com>,
	Vyacheslav Yurkov via B4 Relay
	<devnull+V.Yurkov.EXT.bruker.com@kernel.org>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Brian Masney <bmasney@redhat.com>,
	Brian Masney <bmasney+clk@redhat.com>,
	Jerome Brunet <jbrunet+clk@baylibre.com>,
	Jyri Sarha <jsarha@ti.com>
Cc: linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org,
	devicetree@vger.kernel.org,
	Vyacheslav Yurkov <V.Yurkov.EXT@bruker.com>
Subject: Re: [PATCH v5 2/2] clk: Add gpio-locked fixed clock driver
Date: Thu, 17 Sep 2026 19:05:50 +0200	[thread overview]
Message-ID: <39fdddbf-0fdb-40e7-9cd5-c8f857ee8b9d@gmail.com> (raw)
In-Reply-To: <1jtsnpcn8l.fsf@starbuckisacylon.baylibre.com>

On 16.09.2026 15:57, Jerome Brunet wrote:

>>>> +/* We can't enable the clock, but the Common Clock Framework calls only
>>>> + * enable() not is_enabled()
>>>> + */
>>>> +static int gpio_locked_clk_enable(struct clk_hw *hw)
>>>> +{
>>>> +	return gpio_locked_clk_is_enabled(hw);
>>>> +}
> 
> You need to explain your problem a bit more because this is not OK. Your
> clock should really just provide .is_enabled() AFAICT

When a peripheral driver uses devm_clk_get_enabled(), this is resolved 
to clk_prepare() and clk_enable(). Neither of them check for 
.is_enabled(). Is that a flaw in the CCF or expected behavior?


>>>> +
>>>> +/* We have to implement it, but we are not going to control
>>>> + * parent clock selection
>>>> + */
>>>> +static u8 gpio_locked_clk_get_parent(struct clk_hw *hw)
>>>> +{
>>>> +	return 0;
>>>> +}
> 
> Same, I dont get why you need that. Not needed if there a single parent

This is a remnant from v4, thanks for spotting it.

Slava

      reply	other threads:[~2026-09-17 17:05 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-15  9:27 [PATCH v5 0/2] A proposal to add a " Vyacheslav Yurkov via B4 Relay
2026-09-15  9:27 ` [PATCH v5 1/2] dt-bindings: clock: gpio-gate-clock: Add a new compatible string Vyacheslav Yurkov via B4 Relay
2026-09-15 16:35   ` Conor Dooley
2026-09-15  9:27 ` [PATCH v5 2/2] clk: Add gpio-locked fixed clock driver Vyacheslav Yurkov via B4 Relay
2026-09-15 10:09   ` Jerome Brunet
2026-09-15 13:58     ` Vyacheslav Yurkov
2026-09-16 13:57       ` Jerome Brunet
2026-09-17 17:05         ` Vyacheslav Yurkov [this message]

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