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Date: Wed, 11 Jan 2012 17:45:41 +0000 From: Mark Brown <broonie@...nsource.wolfsonmicro.com> To: Thomas Abraham <thomas.abraham@...aro.org> Cc: Lars-Peter Clausen <lars@...afoo.de>, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, rpurdie@...ys.net, linux-samsung-soc@...r.kernel.org, grant.likely@...retlab.ca, rob.herring@...xeda.com, kgene.kim@...sung.com, jg1.han@...sung.com, kyungmin.park@...sung.com, cbou@...l.ru, kwangwoo.lee@...il.com, augulis.darius@...il.com, ben-linux@...ff.org, patches@...aro.org Subject: Re: [PATCH] backlight: lcd: add driver for raster-type lcd's with gpio controlled panel reset On Wed, Jan 11, 2012 at 04:21:57PM +0530, Thomas Abraham wrote: > In the case of Exynos4 based Origen board, buck7 of max8997 supplies > power to the lcd panel. buck7 is capable of supplying power at > different voltage levels but for Origen board, it is required to > supply only 3.3V. The constraints for buck7 can specify 'apply_uV' and > this will ensure that buck7 is configured to supply 3.3V. > But 'apply_uV' seems to be not ideal for regulators that supply power > to lcd panels. It would be better to power lcd panels only when video > data has to be displayed. What makes you say this? Enabling and disabling a regulator are entirely orthogonal to setting the regulator voltage. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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