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Subject: Re: [PATCH 3/6] dt-bindings: can: flexcan: add fsl, can-index
 property to indicate a resource
To:     Joakim Zhang <qiangqing.zhang@nxp.com>, robh+dt@kernel.org,
        shawnguo@kernel.org, s.hauer@pengutronix.de
Cc:     devicetree@vger.kernel.org, peng.fan@nxp.com, victor.liu@nxp.com,
        netdev@vger.kernel.org, pankaj.bansal@nxp.com,
        linux-kernel@vger.kernel.org, linux-can@vger.kernel.org,
        linux-imx@nxp.com, kernel@pengutronix.de
References: <20201016134320.20321-1-qiangqing.zhang@nxp.com>
 <20201016134320.20321-4-qiangqing.zhang@nxp.com>
From:   Marc Kleine-Budde <mkl@pengutronix.de>
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Message-ID: <604a66f6-83ea-630e-f479-fe62189de42a@pengutronix.de>
Date:   Fri, 16 Oct 2020 08:20:18 +0200
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In-Reply-To: <20201016134320.20321-4-qiangqing.zhang@nxp.com>
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From: Marc Kleine-Budde <mkl@pengutronix.de>
To: Joakim Zhang <qiangqing.zhang@nxp.com>, robh+dt@kernel.org,
 shawnguo@kernel.org, s.hauer@pengutronix.de
Cc: devicetree@vger.kernel.org, peng.fan@nxp.com, victor.liu@nxp.com,
 netdev@vger.kernel.org, pankaj.bansal@nxp.com, linux-kernel@vger.kernel.org,
 linux-can@vger.kernel.org, linux-imx@nxp.com, kernel@pengutronix.de
Message-ID: <604a66f6-83ea-630e-f479-fe62189de42a@pengutronix.de>
Subject: Re: [PATCH 3/6] dt-bindings: can: flexcan: add fsl, can-index
 property to indicate a resource
References: <20201016134320.20321-1-qiangqing.zhang@nxp.com>
 <20201016134320.20321-4-qiangqing.zhang@nxp.com>
In-Reply-To: <20201016134320.20321-4-qiangqing.zhang@nxp.com>

--ELjD8mlgZXf80gZdfz0BoipHtSJqjkxBs
Content-Type: text/plain; charset=utf-8
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On 10/16/20 3:43 PM, Joakim Zhang wrote:
> For SoCs with SCU support, need setup stop mode via SCU firmware,
> so this property can help indicate a resource.
>=20
> Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
> ---
>  Documentation/devicetree/bindings/net/can/fsl-flexcan.txt | 5 +++++
>  1 file changed, 5 insertions(+)
>=20
> diff --git a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt =
b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
> index 6af67f5e581c..839c0c0064a2 100644
> --- a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
> +++ b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
> @@ -43,6 +43,10 @@ Optional properties:
>  		  0: clock source 0 (oscillator clock)
>  		  1: clock source 1 (peripheral clock)
> =20
> +- fsl,can-index: The index of CAN instance.
> +                 For SoCs with SCU support, need setup stop mode via S=
CU firmware,
> +                 so this property can help indicate a resource.

This property is not CAN specific. So the name could be more general.

> +
>  - wakeup-source: enable CAN remote wakeup
> =20
>  Example:
> @@ -54,4 +58,5 @@ Example:
>  		interrupt-parent =3D <&mpic>;
>  		clock-frequency =3D <200000000>; // filled in by bootloader
>  		fsl,clk-source =3D /bits/ 8 <0>; // select clock source 0 for PE
> +		fsl,can-index =3D /bits/ 8 <1>; // the second CAN instance
>  	};
>=20

Marc

--=20
Pengutronix e.K.                 | Marc Kleine-Budde           |
Embedded Linux                   | https://www.pengutronix.de  |
Vertretung West/Dortmund         | Phone: +49-231-2826-924     |
Amtsgericht Hildesheim, HRA 2686 | Fax:   +49-5121-206917-5555 |


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