linux-kernel - Re: [PATCH 5/5] arm64: dts: imx943: Add LVDS/DISPLAY CSR nodes

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Message-ID: <466b4352-91b9-4259-94b0-b8228d8282e9@kernel.org>
Date: Tue, 1 Jul 2025 13:38:11 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: 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 <abelvesa@...nel.org>,
 Frank Li <frank.li@....com>
Cc: linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, Abel Vesa <abel.vesa@...aro.org>
Subject: Re: [PATCH 5/5] arm64: dts: imx943: Add LVDS/DISPLAY CSR nodes

On 01/07/2025 09:04, Peng Fan wrote:
> Add nodes for LVDS/DISPLAY CSR.
> 
> Add ldb_pll_div7 node which is used for clock source of DISPLAY CSR.
> 
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  arch/arm64/boot/dts/freescale/imx943.dtsi | 34 +++++++++++++++++++++++++++++++
>  1 file changed, 34 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx943.dtsi b/arch/arm64/boot/dts/freescale/imx943.dtsi
> index 45b8da758e87771c0775eb799ce2da3aac37c060..cf67dba21e4f6f27fff7e5d29744086e4ec9c021 100644
> --- a/arch/arm64/boot/dts/freescale/imx943.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx943.dtsi
> @@ -3,6 +3,8 @@
>   * Copyright 2025 NXP
>   */
>  
> +#include <dt-bindings/clock/nxp,imx94-clock.h>
> +
>  #include "imx94.dtsi"
>  
>  / {
> @@ -145,4 +147,36 @@ l3_cache: l3-cache {
>  			cache-unified;
>  		};
>  	};
> +
> +	ldb_pll_pixel: ldb_pll_div7 {

Not a DTS coding style.

Please use name for all fixed clocks which matches current format
recommendation: 'clock-<freq>' (see also the pattern in the binding for
any other options).

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/clock/fixed-clock.yaml?h=v6.11-rc1

> +		compatible = "fixed-factor-clock";
> +		#clock-cells = <0>;
> +		clocks = <&scmi_clk IMX94_CLK_LDBPLL>;
> +		clock-div = <7>;
> +		clock-mult = <1>;
> +		clock-output-names = "ldb_pll_div7";
> +	};



Best regards,
Krzysztof