Date: Thu, 22 May 2014 07:18:04 -0600 From: Ian Lepore <ian@FreeBSD.org> To: SAITOU Toshihide <toshi@ruby.ocn.ne.jp> Cc: freebsd-arm@FreeBSD.org Subject: Re: BBB MMC / SD detection instability with U-Boot 2014.04 (CPU 1GHz) Message-ID: <1400764684.1152.218.camel@revolution.hippie.lan> In-Reply-To: <20140522.203923.240655619.toshi@ruby.ocn.ne.jp> References: <537B62D1.4090901@hot.ee> <20140520.234245.38709064.toshi@ruby.ocn.ne.jp> <1400708280.1152.199.camel@revolution.hippie.lan> <20140522.203923.240655619.toshi@ruby.ocn.ne.jp>
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On Thu, 2014-05-22 at 20:39 +0900, SAITOU Toshihide wrote: > In message: <1400708280.1152.199.camel@revolution.hippie.lan> > Ian Lepore <ian@FreeBSD.org> writes: > > On Tue, 2014-05-20 at 23:42 +0900, SAITOU Toshihide wrote: > >> In message: <537B62D1.4090901@hot.ee> > >> "Sulev-Madis Silber (ketas)" <madis555@hot.ee> writes: > >> > On 2014-05-20 15:20, SAITOU Toshihide wrote: > >> >> In message: <20140520.191001.03109216.toshi@ruby.ocn.ne.jp> > >> >> SAITOU Toshihide <toshi@ruby.ocn.ne.jp> writes: > >> >>> In message: <537ACDB2.9080808@hot.ee> > >> >>> "Sulev-Madis Silber (ketas)" <madis555@hot.ee> writes: > >> >>>> > >> >>>> Actually I guess many people might think like me... "HELL, optimizing > >> >>>> boot time of 1min?! I have more important tasks to do than this". > >> >>> > >> >>> If you have ``device sdhci'' line in conf/BEAGLEBONE, is there any > >> >>> differences by changing mmchs to sdhci in am335x.dtsi and > >> >>> beaglebone-black.dts? And also remove ``status = "disabled"'' > >> > > >> > Don't edit am335x.dtsi > >> > > >> > And beaglebone-black.dts already has proper config. > >> > >> In this case, how does ``device sdhci'' driver know the register address? > >> I thought that there is an inconsistency in BEAGLEBONE config and > >> dts file for the SD/MMC driver. > > > > The name@address tag in the dts[i] files doesn't have to match the > > driver name in the kernel config. What matters for matching the driver > > to the right entry in the dts is the "compatible=" property. The > > ti_sdhci driver looks for an entry with any one of these compatible > > strings: > > > > "ti,omap3-hsmmc", "ti,omap4-hsmmc", "ti,mmchs" > > Ah! I see ti_sdhci.c has ofw_bus_is_compatible(dev, "ti,mmchs"). > (Why I felt difference of eMMC detection... Hmm...) What version of source code are you using to see that? You should be seeing a ofw_bus_search_compatible() call using a table of compatible strings that has those entries I listed. -- Ian
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