linux-kernel - Re: [PATCH v5 05/10] arm64: dts: imx8qxp: add flexcan in adma

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Message-ID: <3220805.aeNJFYEL58@steina-w>
Date:   Tue, 31 Jan 2023 15:55:14 +0100
From:   Alexander Stein <alexander.stein@...tq-group.com>
To:     Marcel Ziswiler <marcel@...wiler.com>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-imx@....com, Liu Ying <victor.liu@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Joakim Zhang <qiangqing.zhang@....com>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        Fabio Estevam <festevam@...il.com>,
        Frank Li <Frank.Li@....com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Max Krummenacher <max.krummenacher@...adex.com>,
        Peng Fan <peng.fan@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Philippe Schenker <philippe.schenker@...adex.com>,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>
Subject: Re: [PATCH v5 05/10] arm64: dts: imx8qxp: add flexcan in adma

Hi Marcel,

Am Donnerstag, 26. Januar 2023, 12:08:28 CET schrieb Marcel Ziswiler:
> From: Joakim Zhang <qiangqing.zhang@....com>
> 
> Add FlexCAN decive in adma subsystem.
> 
> Signed-off-by: Joakim Zhang <qiangqing.zhang@....com>
> Signed-off-by: Marcel Ziswiler <marcel.ziswiler@...adex.com>

On TQMa8XQP (i.MX8QXP) using flexcan1 and flexcan2:
Tested-by: Alexander Stein <alexander.stein@...tq-group.com>

Best regards,
Alexander

> ---
> 
> (no changes since v4)
> 
> Changes in v4:
> - New patch combining the following downstream patches:
>   commit e8fe3f57223a ("arm64: dts: imx8qxp: add FlexCAN in adma")
>   commit 4e90361f1ed3 ("arm64: dts: imx8qxp: add multi-pd support for
> CAN1/2") commit 899f516e61f8 ("arm64: dts: imx8: dma: fully switched to new
> clk binding") commit 8a28ca15a058 ("arm64: dts: imx8qxp: drop multi-pd for
> CAN device") commit c493402197dd ("arm64: dts: imx8: update CAN
> fsl,clk-source and fsl,scu-index property")
> 
>  .../arm64/boot/dts/freescale/imx8-ss-dma.dtsi | 72 +++++++++++++++++++
>  1 file changed, 72 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8-ss-dma.dtsi
> b/arch/arm64/boot/dts/freescale/imx8-ss-dma.dtsi index
> 6ccf926b77a5..2dce8f2ee3ea 100644
> --- a/arch/arm64/boot/dts/freescale/imx8-ss-dma.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8-ss-dma.dtsi
> @@ -298,6 +298,65 @@ adc1: adc@...90000 {
>  		status = "disabled";
>  	};
> 
> +	flexcan1: can@...d0000 {
> +		compatible = "fsl,imx8qm-flexcan";
> +		reg = <0x5a8d0000 0x10000>;
> +		interrupts = <GIC_SPI 235 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-parent = <&gic>;
> +		clocks = <&can0_lpcg 1>,
> +			 <&can0_lpcg 0>;
> +		clock-names = "ipg", "per";
> +		assigned-clocks = <&clk IMX_SC_R_CAN_0 IMX_SC_PM_CLK_PER>;
> +		assigned-clock-rates = <40000000>;
> +		power-domains = <&pd IMX_SC_R_CAN_0>;
> +		/* SLSlice[4] */
> +		fsl,clk-source = /bits/ 8 <0>;
> +		fsl,scu-index = /bits/ 8 <0>;
> +		status = "disabled";
> +	};
> +
> +	flexcan2: can@...e0000 {
> +		compatible = "fsl,imx8qm-flexcan";
> +		reg = <0x5a8e0000 0x10000>;
> +		interrupts = <GIC_SPI 236 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-parent = <&gic>;
> +		/* CAN0 clock and PD is shared among all CAN instances as
> +		 * CAN1 shares CAN0's clock and to enable CAN0's clock it
> +		 * has to be powered on.
> +		 */
> +		clocks = <&can0_lpcg 1>,
> +			 <&can0_lpcg 0>;
> +		clock-names = "ipg", "per";
> +		assigned-clocks = <&clk IMX_SC_R_CAN_0 IMX_SC_PM_CLK_PER>;
> +		assigned-clock-rates = <40000000>;
> +		power-domains = <&pd IMX_SC_R_CAN_1>;
> +		/* SLSlice[4] */
> +		fsl,clk-source = /bits/ 8 <0>;
> +		fsl,scu-index = /bits/ 8 <1>;
> +		status = "disabled";
> +	};
> +
> +	flexcan3: can@...f0000 {
> +		compatible = "fsl,imx8qm-flexcan";
> +		reg = <0x5a8f0000 0x10000>;
> +		interrupts = <GIC_SPI 237 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-parent = <&gic>;
> +		/* CAN0 clock and PD is shared among all CAN instances as
> +		 * CAN2 shares CAN0's clock and to enable CAN0's clock it
> +		 * has to be powered on.
> +		 */
> +		clocks = <&can0_lpcg 1>,
> +			 <&can0_lpcg 0>;
> +		clock-names = "ipg", "per";
> +		assigned-clocks = <&clk IMX_SC_R_CAN_0 IMX_SC_PM_CLK_PER>;
> +		assigned-clock-rates = <40000000>;
> +		power-domains = <&pd IMX_SC_R_CAN_2>;
> +		/* SLSlice[4] */
> +		fsl,clk-source = /bits/ 8 <0>;
> +		fsl,scu-index = /bits/ 8 <2>;
> +		status = "disabled";
> +	};
> +
>  	i2c0_lpcg: clock-controller@...00000 {
>  		compatible = "fsl,imx8qxp-lpcg";
>  		reg = <0x5ac00000 0x10000>;
> @@ -369,4 +428,17 @@ adc1_lpcg: clock-controller@...90000 {
>  				     "adc1_lpcg_ipg_clk";
>  		power-domains = <&pd IMX_SC_R_ADC_1>;
>  	};
> +
> +	can0_lpcg: clock-controller@...d0000 {
> +		compatible = "fsl,imx8qxp-lpcg";
> +		reg = <0x5acd0000 0x10000>;
> +		#clock-cells = <1>;
> +		clocks = <&clk IMX_SC_R_CAN_0 IMX_SC_PM_CLK_PER>,
> +			 <&dma_ipg_clk>, <&dma_ipg_clk>;
> +		clock-indices = <IMX_LPCG_CLK_0>, <IMX_LPCG_CLK_4>, 
<IMX_LPCG_CLK_5>;
> +		clock-output-names = "can0_lpcg_pe_clk",
> +				     "can0_lpcg_ipg_clk",
> +				     "can0_lpcg_chi_clk";
> +		power-domains = <&pd IMX_SC_R_CAN_0>;
> +	};
>  };