> -----Original Message----- > From: Wolfram Sang [mailto:w.sang@xxxxxxxxxxxxxx] > Sent: Thursday, September 01, 2011 1:55 PM > To: Lin Tony-B19295 > Cc: linux-mmc@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; > cjb@xxxxxxxxxx > Subject: Re: [PATCH 1/1] mmc: sdhci-esdhc: Change delay after setting > clock from 100ms to 1ms > > On Thu, Sep 01, 2011 at 01:51:15PM +0800, Tony Lin wrote: > > 1ms is enough for hardware to change the clock to stable. > > 100ms is too long. > > How do you know that? Can you be sure for PowerPC as well? Have you > researched why the original author of the code has chosen that value? If > so, please update your commit message with such infos. > I got this confirmation by IC simulation, but sorry I just noticed that's also used for PPC. I can update the information after got confirmation from author. > -- > Pengutronix e.K. | Wolfram Sang > | > Industrial Linux Solutions | http://www.pengutronix.de/ > | -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
