From: Laine Walker-Avina <lwalkera@ieee.org>
To: Igor Grinberg <grinberg@compulab.co.il>
Cc: linux-omap@vger.kernel.org
Subject: Re: AM3517 (Sitara) MMC2 help
Date: Tue, 24 Aug 2010 17:29:36 -0700 [thread overview]
Message-ID: <AANLkTinQWpYbFzDeAdsjpLsiW63q5q9XLkhef0NiujM1@mail.gmail.com> (raw)
In-Reply-To: <4C73BE1C.7080503@compulab.co.il>
On Tue, Aug 24, 2010 at 5:42 AM, Igor Grinberg <grinberg@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.
>
> --
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>
Make sure the MMC2_CLK pin is muxed as an input so the clock can
feedback to the module. Also, you may need to set
CONTROL_DEVCONF1.MMCSDIO2ADPCLKISEL=1 if that exists on the Sitara. I
had the same problem on the OMAP3x.
--
Laine Walker-Avina
Firmware Engineer
PASCO scientific
--
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next prev parent reply other threads:[~2010-08-25 0:29 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-24 12:42 AM3517 (Sitara) MMC2 help Igor Grinberg
2010-08-25 0:29 ` Laine Walker-Avina [this message]
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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