linux-kernel - Re: [PATCH] soc: imx: Add i.MX8MN SoC driver support

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Message-ID: <20190618070334.GD29881@dragon>
Date:   Tue, 18 Jun 2019 15:03:35 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Anson.Huang@....com
Cc:     s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        leonard.crestez@....com, viresh.kumar@...aro.org,
        abel.vesa@....com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Linux-imx@....com
Subject: Re: [PATCH] soc: imx: Add i.MX8MN SoC driver support

On Tue, Jun 11, 2019 at 09:31:25AM +0800, Anson.Huang@....com wrote:
> From: Anson Huang <Anson.Huang@....com>
> 
> This patch adds i.MX8MN SoC driver support:
> 
> root@...8mnevk:~# cat /sys/devices/soc0/family
> Freescale i.MX
> 
> root@...8mnevk:~# cat /sys/devices/soc0/machine
> NXP i.MX8MNano DDR4 EVK board
> 
> root@...8mnevk:~# cat /sys/devices/soc0/soc_id
> i.MX8MN
> 
> root@...8mnevk:~# cat /sys/devices/soc0/revision
> 1.0
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> ---
>  drivers/soc/imx/soc-imx8.c | 13 ++++++++++++-
>  1 file changed, 12 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/soc/imx/soc-imx8.c b/drivers/soc/imx/soc-imx8.c
> index 3842d09..02309a2 100644
> --- a/drivers/soc/imx/soc-imx8.c
> +++ b/drivers/soc/imx/soc-imx8.c
> @@ -55,7 +55,12 @@ static u32 __init imx8mm_soc_revision(void)
>  	void __iomem *anatop_base;
>  	u32 rev;
>  
> -	np = of_find_compatible_node(NULL, NULL, "fsl,imx8mm-anatop");
> +	if (of_machine_is_compatible("fsl,imx8mm"))
> +		np = of_find_compatible_node(NULL, NULL, "fsl,imx8mm-anatop");
> +	else if (of_machine_is_compatible("fsl,imx8mn"))
> +		np = of_find_compatible_node(NULL, NULL, "fsl,imx8mn-anatop");

Can we have this anatop compatible in imx8_soc_data, so that we may save
the call to of_machine_is_compatible()?

Shawn

> +	else
> +		np = NULL;
>  	if (!np)
>  		return 0;
>  
> @@ -79,9 +84,15 @@ static const struct imx8_soc_data imx8mm_soc_data = {
>  	.soc_revision = imx8mm_soc_revision,
>  };
>  
> +static const struct imx8_soc_data imx8mn_soc_data = {
> +	.name = "i.MX8MN",
> +	.soc_revision = imx8mm_soc_revision,
> +};
> +
>  static const struct of_device_id imx8_soc_match[] = {
>  	{ .compatible = "fsl,imx8mq", .data = &imx8mq_soc_data, },
>  	{ .compatible = "fsl,imx8mm", .data = &imx8mm_soc_data, },
> +	{ .compatible = "fsl,imx8mn", .data = &imx8mn_soc_data, },
>  	{ }
>  };
>  
> -- 
> 2.7.4
>