On 08/25/10 11:12, Igor Grinberg wrote: > On 08/25/10 03:29, Laine Walker-Avina wrote: >> On Tue, Aug 24, 2010 at 5:42 AM, Igor Grinberg <grinberg@xxxxxxxxxxxxxx> 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 majordomo@xxxxxxxxxxxxxxx >>> 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. Nope... this does not help. Also, Stanley has restricted the above setting to non-am3517 cpus in commit 03e7e170d6fdc5b6f75d1ab2cc1a6cb4f2b6b8c4 Any other suggestions? Stanley, can you help us with this? -- Regards, Igor. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
