linux-kernel - [PATCH 3/6] arm64: dts: imx8mp: add fsl,nominal-mode property into nominal.dtsi

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Message-Id: <20241219-imx8m-clk-v1-3-cfaffa087da6@pengutronix.de>
Date: Thu, 19 Dec 2024 08:27:34 +0100
From: Ahmad Fatoum <a.fatoum@...gutronix.de>
To: Abel Vesa <abelvesa@...nel.org>, Peng Fan <peng.fan@....com>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Abel Vesa <abel.vesa@...aro.org>, 
 Marek Vasut <marex@...x.de>
Cc: linux-clk@...r.kernel.org, imx@...ts.linux.dev, 
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, Ahmad Fatoum <a.fatoum@...gutronix.de>
Subject: [PATCH 3/6] arm64: dts: imx8mp: add fsl,nominal-mode property into
 nominal.dtsi

The imx8mp-nominal.dtsi is meant to be included into boards that want to
override the default overdrive clock settings with settings suitable for
running in nominal drive mode at its lower required voltage.

Specifying fsl,nominal-mode informs drivers of this fact, so they can
sanity check runtime clock reconfiguration to observe the limits imposed
by nominal mode.

Signed-off-by: Ahmad Fatoum <a.fatoum@...gutronix.de>
---
 arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi
index f9a82a663033..532eb049c7e8 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi
@@ -21,6 +21,7 @@ &clk {
 			       <800000000>,
 			       <600000000>,
 			       <400000000>;
+	fsl,nominal-mode;
 };
 
 &pgc_hdmimix {

-- 
2.39.5