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From: Igor Grinberg <grinberg@compulab.co.il>
To: linux-omap@vger.kernel.org
Subject: AM3517 (Sitara) MMC2 help
Date: Tue, 24 Aug 2010 15:42:04 +0300	[thread overview]
Message-ID: <4C73BE1C.7080503@compulab.co.il> (raw)

 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.


             reply	other threads:[~2010-08-24 12:42 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-24 12:42 Igor Grinberg [this message]
2010-08-25  0:29 ` AM3517 (Sitara) MMC2 help Laine Walker-Avina
2010-08-25  0:36   ` Laine Walker-Avina
2010-08-25  7:57     ` Igor Grinberg
2010-08-25  8:12   ` Igor Grinberg
2010-08-25  9:26     ` Igor Grinberg
2010-08-25 13:46     ` Ashwin Bihari
2010-08-25 13:51       ` Gadiyar, Anand
2010-08-25 13:58         ` Ashwin Bihari

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