Date: Fri, 07 Nov 2008 00:48:14 +0200 From: Alexander Motin <mav@FreeBSD.org> To: lars.engels@0x20.net Cc: freebsd-arm@freebsd.org, freebsd-current@freebsd.org, freebsd-mobile@freebsd.org Subject: Re: RFC: PCI SD host controller driver & mmc/mmcsd modules improvements Message-ID: <4913742E.9040801@FreeBSD.org> In-Reply-To: <20081106.101047.163264510.imp@bsdimp.com> References: <49130918.5030904@FreeBSD.org> <20081106163729.clcw2eulgk0k4w0c@0x20.net> <49131109.2020601@FreeBSD.org> <20081106.101047.163264510.imp@bsdimp.com>
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M. Warner Losh wrote: > In message: <49131109.2020601@FreeBSD.org> > Alexander Motin <mav@FreeBSD.org> writes: > : Lars Engels wrote: > : > 1. How can I tune the PCI configuration? With pciconf -w or so? > : > : Yes. `pciconf -r -b device addr` to read and `pciconf -w -b device addr > : value` to write. > > I have changes that almost make my TI card do it. > > : > 2. Unfortunately the sysctl did not change a thing with regard to the > : > Card reader. > : > : Have you added it to the loader.conf and rebooted? > : > : > 3. I added the chip ID and the second device is now recognized as a > : > sdhci device but still does not see any card inserted: > : > > : > Nov 6 16:32:20 NB0117232 kernel: sdhci1: Hardware doesn't specify base > : > clock frequency. > : > Nov 6 16:32:20 NB0117232 kernel: sdhci1: Hardware doesn't specify > : > timeout clock frequency. > : > Nov 6 16:32:20 NB0117232 kernel: sdhci1: Hardware doesn't report any > : > support voltages. > : > : Looks like it is not enough compatible, or even not compatible. > > Chances are good that you need to the workaround to turn on these > things. Here is some datasheet I have found for R5C832, but it looks not too detailed to say something for sure: http://www.aeneas.com.cn/PDF/Ricoh/2005/R5C832E1%5B1%5D.00.pdf At least it says that it's MMC interface is single-bit, while standard SD host controller has 4 bit's bus. -- Alexander Motin
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