On 08/25/10 03:29, Laine Walker-Avina wrote: > On Tue, Aug 24, 2010 at 5:42 AM, Igor Grinberg <grinb...@compulab.co.il> > wrote: >> Hi, >> >> I have am3517 based board and Libertas sdio (4 wires) >> wifi connected directly (no transceiver / level shifter) on mmc2 >> (which is named mmc1 in s/w). >> >> am3517 is configured (h/w) for 3.3V and so is Libertas wifi. >> >> dmesg | grep mmc1 shows: >> >> --------------cut------------------ >> mux: Setting signal sdmmc1_clk.sdmmc1_clk 0x0000 -> 0x0118 >> mux: Setting signal sdmmc1_cmd.sdmmc1_cmd 0x0000 -> 0x0118 >> mux: Setting signal sdmmc1_dat0.sdmmc1_dat0 0x0100 -> 0x0118 >> mux: Setting signal sdmmc1_dat1.sdmmc1_dat1 0x0100 -> 0x0118 >> mux: Setting signal sdmmc1_dat2.sdmmc1_dat2 0x0100 -> 0x0118 >> mux: Setting signal sdmmc1_dat3.sdmmc1_dat3 0x0100 -> 0x0118 >> mmc1: clock 0Hz busmode 1 powermode 0 cs 0 Vdd 0 width 0 timing 0 >> mmc1: clock 0Hz busmode 1 powermode 1 cs 0 Vdd 20 width 0 timing 0 >> mmc1: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 20 width 0 timing 0 >> mmc1: starting CMD52 arg 00000c00 flags 00000195 >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD52, argument 0x00000c00 >> mmc1: req done (CMD52): -110: 00000000 00000000 00000000 00000000 >> mmc1: starting CMD52 arg 80000c08 flags 00000195 >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD52, argument 0x80000c08 >> mmc1: req done (CMD52): -110: 00000000 00000000 00000000 00000000 >> mmc1: clock 400000Hz busmode 1 powermode 2 cs 1 Vdd 20 width 0 timing 0 >> mmc1: starting CMD0 arg 00000000 flags 000000c0 >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD0, argument 0x00000000 >> mmc1: req done (CMD0): 0: 00000000 00000000 00000000 00000000 >> mmc1: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 20 width 0 timing 0 >> mmc1: starting CMD8 arg 000001aa flags 000002f5 >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD8, argument 0x000001aa >> mmc1: req done (CMD8): -110: 00000000 00000000 00000000 00000000 >> mmc1: starting CMD5 arg 00000000 flags 000002e1 >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD5, argument 0x00000000 >> mmc1: req failed (CMD5): -110, retrying... >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD5, argument 0x00000000 >> mmc1: req failed (CMD5): -110, retrying... >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD5, argument 0x00000000 >> mmc1: req failed (CMD5): -110, retrying... >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD5, argument 0x00000000 >> mmc1: req done (CMD5): -110: 00000000 00000000 00000000 00000000 >> mmc1: starting CMD55 arg 00000000 flags 000000f5 >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD55, argument 0x00000000 >> mmc1: req done (CMD55): -110: 00000000 00000000 00000000 00000000 >> mmc1: starting CMD55 arg 00000000 flags 000000f5 >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD55, argument 0x00000000 >> mmc1: req done (CMD55): -110: 00000000 00000000 00000000 00000000 >> mmc1: starting CMD55 arg 00000000 flags 000000f5 >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD55, argument 0x00000000 >> mmc1: req done (CMD55): -110: 00000000 00000000 00000000 00000000 >> mmc1: starting CMD55 arg 00000000 flags 000000f5 >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD55, argument 0x00000000 >> mmc1: req done (CMD55): -110: 00000000 00000000 00000000 00000000 >> mmc1: starting CMD1 arg 00000000 flags 000000e1 >> mmci-omap-hs mmci-omap-hs.1: mmc1: CMD1, argument 0x00000000 >> mmc1: req done (CMD1): -110: 00000000 00000000 00000000 00000000 >> mmc1: clock 0Hz busmode 1 powermode 0 cs 0 Vdd 0 width 0 timing 0 >> -------------------cut--------------------- >> >> Libertas is powered up and gets reseted properly. >> On the oscilloscope, I see some communication going >> on the CMD line and stops after some time. >> >> am3517 PSP from TI, does not even registers/enables >> the wifi combo found on am3517evm. >> >> Have anybody got the mmc2 working on am3517? >> May be with transceiver? >> >> Any help will be appreciated. >> >> Thanks >> >> -- >> Regards, >> Igor. >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-omap" in >> the body of a message to majord...@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > Make sure the MMC2_CLK pin is muxed as an input so the clock can > feedback to the module.
omap2_mmc_mux() in arch/arm/mach-omap2/devices.c is handling this and I think properly or else any omap will fail using the mmc2. > Also, you may need to set > CONTROL_DEVCONF1.MMCSDIO2ADPCLKISEL=1 if that exists on the Sitara. I > had the same problem on the OMAP3x. I will try that. Thanks -- Regards, Igor. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
