**** BEGIN LOGGING AT Fri Apr 19 02:59:58 2013
Apr 19 15:27:23 <ayaka> I still have some unknown with gpio, I know that it is used to set state of something, but I find they are even used to sd/mmc reader in high speed solution
Apr 19 16:09:24 <ayaka> I know to know how much speed that gpio can offer
Apr 19 16:48:10 <PaulFertser> ayaka: it's unlikely someone's bitbanging high-speed SD. It's possible gpio is used for carddetect or something like that.
Apr 19 16:51:44 <ayaka> PaulFertser, yes, but there is kmod in kernel to use gpio to read mmc
Apr 19 16:52:11 <ayaka> and in msm8x60 user manual, I find it use gpio as its three sdio ports
Apr 19 16:54:34 <PaulFertser> ayaka: yes, there's a bitbanding implementation for sd/mmc, used mostly for diy hacks on soho wifi routers.
Apr 19 16:56:44 <ayaka> yes, how much speed it can offer? But maybe I mistake the describe in user manual of msm8x86, it also use that way
Apr 19 17:00:57 <ayaka> in 135 of 80-vu872-3, it shows the SDC2 and SDC1 are using GPIO, from 168 to 159(SDC1) and 151 to 143(SDC2)
Apr 19 17:11:24 <PaulFertser> ayaka: usually you can use most pins either for some special function (e.g. sd) or for gpio, software-selectable.
Apr 19 17:13:37 <ayaka> Oh, I see.
Apr 19 17:13:51 <ayaka> PaulFertser, thank you
Apr 19 17:15:41 <PaulFertser> ayaka: np
Apr 19 17:22:19 <ayaka> Because I want to practice writing fdt,I have ported u-boot 2010-09 for s3c6410 which can send fdt binary to kernel, is it all preparing work I shall do?
Apr 19 17:24:42 <PaulFertser> ayaka: is there a DT-enabled machine file for s3c6410? If yes, and everything you need is parsed, then yes, sounds like that.
Apr 19 17:25:14 <ayaka> what is " DT-enabled machine file " ?
Apr 19 17:29:17 <ayaka> I don't think there is some fdt for s3c6410
Apr 19 17:48:58 <ayaka> PaulFertser, thank you
**** ENDING LOGGING AT Sat Apr 20 02:59:57 2013