linux-kernel - Re: [PATCH 13/15] pinctrl: sunxi: retrieve and enable PL reset line for A31 SoC

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Message-ID: <20140409153412.GJ28585@lukather>
Date:	Wed, 9 Apr 2014 17:34:12 +0200
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Boris BREZILLON <boris.brezillon@...e-electrons.com>
Cc:	Randy Dunlap <rdunlap@...radead.org>,
	Emilio López <emilio@...pez.com.ar>,
	Mike Turquette <mturquette@...aro.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 13/15] pinctrl: sunxi: retrieve and enable PL reset line
 for A31 SoC

On Wed, Apr 09, 2014 at 03:51:16PM +0200, Boris BREZILLON wrote:
> Retrieve and deassert the reset line related to PL pins.
> 
> Signed-off-by: Boris BREZILLON <boris.brezillon@...e-electrons.com>
> ---
>  drivers/pinctrl/pinctrl-sunxi.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/drivers/pinctrl/pinctrl-sunxi.c b/drivers/pinctrl/pinctrl-sunxi.c
> index da76ceb..09eea79 100644
> --- a/drivers/pinctrl/pinctrl-sunxi.c
> +++ b/drivers/pinctrl/pinctrl-sunxi.c
> @@ -26,6 +26,7 @@
>  #include <linux/pinctrl/pinconf-generic.h>
>  #include <linux/pinctrl/pinmux.h>
>  #include <linux/platform_device.h>
> +#include <linux/reset.h>
>  #include <linux/slab.h>
>  
>  #include "core.h"
> @@ -878,6 +879,7 @@ static int sunxi_pinctrl_probe(struct platform_device *pdev)
>  	const struct of_device_id *device;
>  	struct pinctrl_pin_desc *pins;
>  	struct sunxi_pinctrl *pctl;
> +	struct reset_control *rstc;
>  	int i, ret, last_pin;
>  	struct clk *clk;
>  
> @@ -905,6 +907,14 @@ static int sunxi_pinctrl_probe(struct platform_device *pdev)
>  		ret = clk_prepare_enable(clk);
>  		if (ret)
>  			return ret;
> +
> +		rstc = devm_reset_control_get(&pdev->dev, NULL);
> +		if (IS_ERR(rstc))
> +			return PTR_ERR(rstc);
> +
> +		ret = reset_control_deassert(rstc);
> +		if (ret)
> +			return ret;

Same thing than in patch 12 :)

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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