From: Peng Fan <peng.fan@oss.nxp.com>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: Abel Vesa <abelvesa@kernel.org>, Peng Fan <peng.fan@nxp.com>,
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>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
Abel Vesa <abel.vesa@linaro.org>, Marek Vasut <marex@denx.de>,
linux-clk@vger.kernel.org, imx@lists.linux.dev,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 6/6] clk: imx8mp: inform CCF of maximum frequency of clocks
Date: Mon, 30 Dec 2024 09:38:48 +0800 [thread overview]
Message-ID: <20241230013848.GD28662@localhost.localdomain> (raw)
In-Reply-To: <20241219-imx8m-clk-v1-6-cfaffa087da6@pengutronix.de>
On Thu, Dec 19, 2024 at 08:27:37AM +0100, Ahmad Fatoum wrote:
>The IMX8MPCEC datasheet lists maximum frequencies allowed for different
>modules. Some of these limits are universal, but some depend on
>whether the SoC is operating in nominal or in overdrive mode.
>
>The imx8mp.dtsi currently assumes overdrive mode and configures some
>clocks in accordance with this. Boards wishing to make use of nominal
>mode will need to override some of the clock rates manually.
>
>As operating the clocks outside of their allowed range can lead to
>difficult to debug issues, it makes sense to register the maximum rates
>allowed in the driver, so the CCF can take them into account.
>
>Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
next prev parent reply other threads:[~2024-12-30 0:33 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-19 7:27 [PATCH 0/6] arm64: dts: freescale: imx8mp-skov: switch to nominal drive mode Ahmad Fatoum
2024-12-19 7:27 ` [PATCH 1/6] dt-bindings: clock: imx8m: document nominal/overdrive properties Ahmad Fatoum
2024-12-19 19:49 ` Conor Dooley
2024-12-19 20:14 ` Ahmad Fatoum
2024-12-25 14:20 ` Conor Dooley
2024-12-26 16:54 ` Ahmad Fatoum
2024-12-27 17:48 ` Conor Dooley
2024-12-19 7:27 ` [PATCH 2/6] arm64: dts: imx8mp: Add optional nominal drive mode DTSI Ahmad Fatoum
2025-01-06 9:21 ` Peng Fan
2024-12-19 7:27 ` [PATCH 3/6] arm64: dts: imx8mp: add fsl,nominal-mode property into nominal.dtsi Ahmad Fatoum
2024-12-19 7:27 ` [PATCH 4/6] arm64: dts: freescale: imx8mp-skov: fix LDB clock rate configuration Ahmad Fatoum
2024-12-19 7:27 ` [PATCH 5/6] arm64: dts: freescale: imx8mp-skov: operate SoC in nominal mode Ahmad Fatoum
2024-12-19 7:27 ` [PATCH 6/6] clk: imx8mp: inform CCF of maximum frequency of clocks Ahmad Fatoum
2024-12-20 6:18 ` Peng Fan
2024-12-20 6:30 ` Ahmad Fatoum
2024-12-30 1:38 ` Peng Fan [this message]
2025-01-06 9:08 ` Peng Fan
2024-12-20 6:16 ` [PATCH 0/6] arm64: dts: freescale: imx8mp-skov: switch to nominal drive mode Peng Fan
2024-12-20 6:21 ` Ahmad Fatoum
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