linux-kernel - Re: [PATCH v2 3/4] memory: omap-gpmc: check for nand node name instead of just compatibility

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Date:   Wed, 15 Dec 2021 10:03:21 -0600
From:   Rob Herring <robh@...nel.org>
To:     Roger Quadros <rogerq@...nel.org>
Cc:     krzysztof.kozlowski@...onical.com, tony@...mide.com, kishon@...com,
        nm@...com, vigneshr@...com, linux-omap@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v2 3/4] memory: omap-gpmc: check for nand node name
 instead of just compatibility

On Wed, Dec 08, 2021 at 02:46:10PM +0200, Roger Quadros wrote:
> We have added new compatibles for controller so just checking for
> "ti,omap2-nand" compatible is not enough. Check for "nand" node name
> as well.
> 
> Signed-off-by: Roger Quadros <rogerq@...nel.org>
> ---
>  drivers/memory/omap-gpmc.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c
> index 624153048182..9f0062a262db 100644
> --- a/drivers/memory/omap-gpmc.c
> +++ b/drivers/memory/omap-gpmc.c
> @@ -2183,7 +2183,8 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
>  		}
>  	}
>  
> -	if (of_device_is_compatible(child, "ti,omap2-nand")) {
> +	if (of_device_is_compatible(child, "ti,omap2-nand") ||
> +	    of_node_name_eq(child, "nand")) {

It would be better to stick with compatible strings. You can match 
against a match table. This should be 'nand-controller' really if this 
binding had a proper split between the controller and nand chips.

Rob