linux-kernel - Re: [RESEND PATCH] pwm-backlight: fix the panel power sequence

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Message-ID: <20151016083616.GA7858@pengutronix.de>
Date:	Fri, 16 Oct 2015 10:36:16 +0200
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	YH Huang <yh.huang@...iatek.com>
Cc:	Thierry Reding <thierry.reding@...il.com>,
	Jingoo Han <jingoohan1@...il.com>,
	Lee Jones <lee.jones@...aro.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	linux-pwm@...r.kernel.org, linux-fbdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	linux-mediatek@...ts.infradead.org,
	Sascha Hauer <kernel@...gutronix.de>,
	yingjoe.chen@...iatek.com,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [RESEND PATCH] pwm-backlight: fix the panel power sequence

On Fri, Oct 16, 2015 at 09:37:34AM +0800, YH Huang wrote:
> In order to match the panel power sequence, disable the enable_gpio
> in the probe function. Also, reorder the code in the power_on and
> power_off function to match the timing.
> @@ -241,8 +242,7 @@ static int pwm_backlight_probe(struct platform_device *pdev)
>  	pb->dev = &pdev->dev;
>  	pb->enabled = false;
>  
> -	pb->enable_gpio = devm_gpiod_get_optional(&pdev->dev, "enable",
> -						  GPIOD_OUT_HIGH);
> +	pb->enable_gpio = devm_gpiod_get_optional(&pdev->dev, "enable");

Please actually test your patches. This change here won't compile.

Sascha

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