linux-kernel - Re: [PATCH 1/4] memory: ti-aemif: Get a named clock rather than an unnamed one

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Message-ID: <20160810070019.GA14114@gobelin>
Date:	Wed, 10 Aug 2016 07:00:20 +0000
From:	Karl Beldan <kbeldan@...libre.com>
To:	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Russell King <linux@...linux.org.uk>,
	Santosh Shilimkar <ssantosh@...nel.org>,
	Sekhar Nori <nsekhar@...com>,
	Kevin Hilman <khilman@...libre.com>,
	Karl Beldan <karl.beldan+oss@...il.com>
Subject: Re: [PATCH 1/4] memory: ti-aemif: Get a named clock rather than an
 unnamed one

On Tue, Aug 09, 2016 at 05:15:15PM +0000, Karl Beldan wrote:
> Many davinci boards (da830 and da850 families) don't have their clocks
> in DT yet and won't be successful in getting an unnamed aemif clock.
> Also the sole current users of ti-aemif (keystone boards) use 'aemif' as
> their aemif device clock clock-name and should remain unaffected.
> 
> Signed-off-by: Karl Beldan <kbeldan@...libre.com>
> ---
>  drivers/memory/ti-aemif.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/memory/ti-aemif.c b/drivers/memory/ti-aemif.c
> index a579a0f..c251fc8 100644
> --- a/drivers/memory/ti-aemif.c
> +++ b/drivers/memory/ti-aemif.c
> @@ -345,7 +345,7 @@ static int aemif_probe(struct platform_device *pdev)
>  
>  	platform_set_drvdata(pdev, aemif);
>  
> -	aemif->clk = devm_clk_get(dev, NULL);
> +	aemif->clk = devm_clk_get(dev, "aemif");

Looking further it seems to me that the struct clk_lookup da850_clks
registered by davinci_clk_init() should be enough to clk_get() unnamed
clocks using only the dev name. I look into what's going on but it
would make this patch unnecessary.
 
Karl