linux-kernel - Re: [PATCH v2 09/10] arm64: dts: imx952-evk: Add flexcan support

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Message-ID: <CAEnQRZBpD67MWk7T4j6RTymGiFJNW5kAs2TMS=BxVTVs7qjUAQ@mail.gmail.com>
Date: Tue, 13 Jan 2026 11:07:28 +0200
From: Daniel Baluta <daniel.baluta@...il.com>
To: "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc: 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>, devicetree@...r.kernel.org, imx@...ts.linux.dev, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	Peng Fan <peng.fan@....com>, Haibo Chen <haibo.chen@....com>
Subject: Re: [PATCH v2 09/10] arm64: dts: imx952-evk: Add flexcan support

On Sun, Jan 11, 2026 at 2:46 PM Peng Fan (OSS) <peng.fan@....nxp.com> wrote:
>
> From: Haibo Chen <haibo.chen@....com>
>
> Add flexcan support, since flexcan1 share pins with PDM,
> default disable flexcan1.
>
> Signed-off-by: Haibo Chen <haibo.chen@....com>
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  arch/arm64/boot/dts/freescale/imx952-evk.dts | 45 ++++++++++++++++++++++++++++
>  1 file changed, 45 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx952-evk.dts b/arch/arm64/boot/dts/freescale/imx952-evk.dts
> index 21b951a2156414819dfb589e5e7e736e7b1fe48a..bae7b88f8229babc42952b7abbeb912cbefc10fd 100644
> --- a/arch/arm64/boot/dts/freescale/imx952-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx952-evk.dts
> @@ -64,6 +64,22 @@ linux_cma: linux,cma {
>                 };
>         };
>
> +       flexcan1_phy: can-phy0 {
> +               compatible = "nxp,tjr1443";
> +               #phy-cells = <0>;
> +               max-bitrate = <8000000>;
> +               enable-gpios = <&pcal6416 6 GPIO_ACTIVE_HIGH>;
> +               standby-gpios = <&pcal6416 5 GPIO_ACTIVE_LOW>;
> +       };
> +
> +       flexcan2_phy: can-phy1 {
> +               compatible = "nxp,tjr1443";
> +               #phy-cells = <0>;
> +               max-bitrate = <8000000>;
> +               enable-gpios = <&i2c4_pcal6408 4 GPIO_ACTIVE_HIGH>;
> +               standby-gpios = <&i2c4_pcal6408 3 GPIO_ACTIVE_LOW>;
> +       };
> +
>         reg_3p3v: regulator-3p3v {
>                 compatible = "regulator-fixed";
>                 regulator-max-microvolt = <3300000>;
> @@ -108,6 +124,21 @@ reg_usb_vbus: regulator-vbus {
>
>  };
>
> +/* pin conflict with PDM */
> +&flexcan1 {
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&pinctrl_flexcan1>;
> +       phys = <&flexcan1_phy>;
> +       status = "disabled";
> +};

So we add this here just for simplicity right? And then enable
flexcan1 in a separate dts?

With this,

Reviewed-by: Daniel Baluta <daniel.baluta@....com>