linux-kernel - Re: [PATCH v2 1/5] clk: Respect CLK_OPS_PARENT

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Message-ID: <602158eb-472c-4443-9dda-aadf2a6c9f6d@collabora.com>
Date: Thu, 9 Oct 2025 10:01:06 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd
 <sboyd@...nel.org>, Dong Aisheng <aisheng.dong@....com>,
 Matthias Brugger <matthias.bgg@...il.com>,
 Yassine Oudjana <y.oudjana@...tonmail.com>,
 Laura Nao <laura.nao@...labora.com>,
 Nícolas F. R. A. Prado <nfraprado@...labora.com>,
 Chia-I Wu <olvaffe@...il.com>, Chen-Yu Tsai <wenst@...omium.org>
Cc: kernel@...labora.com, linux-clk@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-mediatek@...ts.infradead.org, Stephen Boyd <sboyd@...eaurora.org>
Subject: Re: [PATCH v2 1/5] clk: Respect CLK_OPS_PARENT_ENABLE during recalc

Il 08/10/25 18:05, Nicolas Frattaroli ha scritto:
> When CLK_OPS_PARENT_ENABLE was introduced, it guarded various clock
> operations, such as setting the rate or switching parents. However,
> another operation that can and often does touch actual hardware state is
> recalc_rate, which may also be affected by such a dependency.
> 
> Add parent enables/disables where the recalc_rate op is called directly.
> 
> Fixes: fc8726a2c021 ("clk: core: support clocks which requires parents enable (part 2)")
> Fixes: a4b3518d146f ("clk: core: support clocks which requires parents enable (part 1)")
> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>