linux-kernel - Re: [PATCH 1/3] arm64: dts: lx2160a: Add flexcan support

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Date:   Mon, 18 Jan 2021 09:37:44 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Kuldeep Singh <kuldeep.singh@....com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Joakim Zhang <qiangqing.zhang@....com>
Subject: Re: [PATCH 1/3] arm64: dts: lx2160a: Add flexcan support

On Mon, Jan 11, 2021 at 01:08:47PM +0530, Kuldeep Singh wrote:
> LX2160A supports two flexcan controllers. Add the support.
> Enable support further for LX2160A-RDB/QDS.
> 
> Signed-off-by: Kuldeep Singh <kuldeep.singh@....com>
> ---
>  arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dts |  8 ++++++++
>  arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts | 16 ++++++++++++++++
>  arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi    | 20 ++++++++++++++++++++
>  3 files changed, 44 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dts b/arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dts
> index 16ae3b0..d858d9c 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dts
> +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dts
> @@ -33,6 +33,14 @@
>  	};
>  };
>  
> +&can0 {
> +	status = "okay";
> +};
> +
> +&can1 {
> +	status = "okay";
> +};
> +
>  &crypto {
>  	status = "okay";
>  };
> diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts b/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts
> index 6f82759..5dbf274 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts
> +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts
> @@ -89,6 +89,22 @@
>  	};
>  };
>  
> +&can0 {
> +	status = "okay";
> +
> +	can-transceiver {
> +		max-bitrate = <5000000>;
> +	};
> +};
> +
> +&can1 {
> +	status = "okay";
> +
> +	can-transceiver {
> +		max-bitrate = <5000000>;
> +	};
> +};
> +
>  &esdhc0 {
>  	sd-uhs-sdr104;
>  	sd-uhs-sdr50;
> diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> index 0d4bce1..63a3ef6 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> @@ -878,6 +878,26 @@
>  			status = "disabled";
>  		};
>  
> +		can0: can@...0000 {
> +			compatible = "fsl,lx2160ar1-flexcan";
> +			reg = <0x0 0x2180000 0x0 0x10000>;
> +			interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clockgen 4 7>, <&sysclk>;

Can defines in dt-bindings/clock/fsl,qoriq-clockgen.h be useful?

Shawn

> +			clock-names = "ipg", "per";
> +			fsl,clk-source = <0>;
> +			status = "disabled";
> +		};
> +
> +		can1: can@...0000 {
> +			compatible = "fsl,lx2160ar1-flexcan";
> +			reg = <0x0 0x2190000 0x0 0x10000>;
> +			interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clockgen 4 7>, <&sysclk>;
> +			clock-names = "ipg", "per";
> +			fsl,clk-source = <0>;
> +			status = "disabled";
> +		};
> +
>  		uart0: serial@...0000 {
>  			compatible = "arm,sbsa-uart","arm,pl011";
>  			reg = <0x0 0x21c0000 0x0 0x1000>;
> -- 
> 2.7.4
>