linux-kernel - Re: [PATCH v2] pwm-backlight: fix the panel power sequence

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Message-ID: <1444988219.3541.3.camel@pengutronix.de>
Date:	Fri, 16 Oct 2015 11:36:59 +0200
From:	Philipp Zabel <p.zabel@...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: [PATCH v2] pwm-backlight: fix the panel power sequence

Am Freitag, den 16.10.2015, 17:17 +0800 schrieb YH Huang:
> 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.

Could you also have a look at the "pwm-backlight: Avoid backlight
flicker when probed from DT" patch?
I think in case of a panel left enabled by the bootloader, your patch
will disable the backlight for a short time.

best regards
Philipp

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