From: Stephen Boyd <sboyd@kernel.org>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Abel Vesa <abelvesa@kernel.org>,
Fabio Estevam <festevam@gmail.com>, Marek Vasut <marex@denx.de>,
Michael Turquette <mturquette@baylibre.com>,
Peng Fan <peng.fan@nxp.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Sascha Hauer <s.hauer@pengutronix.de>,
Shawn Guo <shawnguo@kernel.org>, Ying Liu <victor.liu@nxp.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
linux-clk@vger.kernel.org, imx@lists.linux.dev,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
Abel Vesa <abel.vesa@linaro.org>,
Herve Codina <herve.codina@bootlin.com>,
Luca Ceresoli <luca.ceresoli@bootlin.com>,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
Ian Ray <ian.ray@ge.com>
Subject: Re: [PATCH 4/5] clk: Add flag to prevent frequency changes when walking subtrees
Date: Mon, 30 Dec 2024 17:09:32 -0800 [thread overview]
Message-ID: <3bcf5bc1007c9ed2900780fe07e66cb8.sboyd@kernel.org> (raw)
In-Reply-To: <87jzbqtfc3.fsf@bootlin.com>
Quoting Miquel Raynal (2024-12-23 10:38:20)
> Hi Stephen,
>
> >> +/* do not passively change this clock rate during subtree rate propagation */
> >> +#define CLK_NO_RATE_CHANGE_DURING_PROPAGATION BIT(14)
> >
> > Why doesn't rate locking work?
>
> Can you be more specific? What function from the API is supposed to do
> what I need? AFAIU, none of them is properly locking the rate during a
> subtree walk, but if I misread one of them, I'd be glad to drop all this.
>
It's clk_set_rate_exclusive() as Maxime also asked about in the other
thread.
next prev parent reply other threads:[~2024-12-31 1:11 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-21 17:41 [PATCH 0/5] clk: Fix simple video pipelines on i.MX8 Miquel Raynal
2024-11-21 17:41 ` [PATCH 1/5] clk: imx: clk-imx8mp: Allow LDB serializer clock reconfigure parent rate Miquel Raynal
2024-11-21 17:41 ` [PATCH 2/5] clk: Add a helper to determine a clock rate Miquel Raynal
2024-11-21 17:41 ` [PATCH 3/5] clk: Split clk_calc_subtree() Miquel Raynal
2024-11-21 17:41 ` [PATCH 4/5] clk: Add flag to prevent frequency changes when walking subtrees Miquel Raynal
2024-12-10 22:44 ` Stephen Boyd
2024-12-23 18:38 ` Miquel Raynal
2024-12-31 1:09 ` Stephen Boyd [this message]
2024-12-17 12:47 ` Maxime Ripard
2024-12-23 18:43 ` Miquel Raynal
2024-12-31 1:22 ` Stephen Boyd
2025-01-06 14:36 ` Maxime Ripard
2025-01-10 15:40 ` Miquel Raynal
2025-01-10 15:38 ` Miquel Raynal
2024-11-21 17:41 ` [PATCH 5/5] clk: imx: imx8mp: Prevent media clocks to be incompatibly changed Miquel Raynal
2024-11-22 6:01 ` [PATCH 0/5] clk: Fix simple video pipelines on i.MX8 Liu Ying
2024-11-22 9:54 ` Miquel Raynal
2024-11-26 6:49 ` Liu Ying
2024-11-26 11:03 ` Miquel Raynal
2024-11-27 7:24 ` Liu Ying
2024-12-17 12:54 ` Maxime Ripard
2024-12-23 18:59 ` Miquel Raynal
2025-01-06 14:45 ` Maxime Ripard
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