[PATCH 1/3] arm64: dts: imx8mm: Describe carrier board 20 MHz Xtal on i.MX8MM Menlo board

[Peng Fan]

> Subject: [PATCH 1/3] arm64: dts: imx8mm: Describe carrier board 20 MHz
> Xtal on i.MX8MM Menlo board
> 
> The i.MX8MM Menlo carrier board uses dedicated 20 MHz Xtal to supply
> clock to second SPI CAN controller on the carrier board as well as CPLD on the
> same board. Fix incorrect reuse of SoM 20 MHz Xtal for that purpose,
> describe the separate Xtal and use it.
> 
> Signed-off-by: Marek Vasut <marex at denx.de>
> ---
> Cc: Conor Dooley <conor+dt at kernel.org>
> Cc: Fabio Estevam <festevam at gmail.com>
> Cc: Krzysztof Kozlowski <krzk+dt at kernel.org>
> Cc: Pengutronix Kernel Team <kernel at pengutronix.de>
> Cc: Rob Herring <robh at kernel.org>
> Cc: Sascha Hauer <s.hauer at pengutronix.de>
> Cc: Shawn Guo <shawnguo at kernel.org>
> Cc: devicetree at vger.kernel.org
> Cc: imx at lists.linux.dev
> Cc: linux-arm-kernel at lists.infradead.org
> ---
>  arch/arm64/boot/dts/freescale/imx8mm-mx8menlo.dts | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-mx8menlo.dts
> b/arch/arm64/boot/dts/freescale/imx8mm-mx8menlo.dts
> index 0b123a84018b2..4c38979f7333f 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-mx8menlo.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-mx8menlo.dts
> @@ -14,6 +14,13 @@ / {
>  		     "toradex,verdin-imx8mm",
>  		     "fsl,imx8mm";
> 
> +	/* Carrier board Xtal for SPI CAN controller and CPLD */
> +	clk20mcb: clk-20m-cb {

Per fixed-clock.yaml, nodename should be clock-xx.

Regards,
Peng.

> +		compatible = "fixed-clock";
> +		#clock-cells = <0>;
> +		clock-frequency = <20000000>;
> +	};
> +
>  	/delete-node/ gpio-keys;
> 
>  	leds {
> @@ -60,7 +67,7 @@ &ecspi1 {
>  	/* CAN controller on the baseboard */
>  	canfd: can at 0 {
>  		compatible = "microchip,mcp2518fd";
> -		clocks = <&clk_xtal20>;
> +		clocks = <&clk20mcb>;
>  		interrupt-parent = <&gpio1>;
>  		interrupts = <8 IRQ_TYPE_EDGE_FALLING>;
>  		reg = <0>;
> --
> 2.43.0
>