From mboxrd@z Thu Jan 1 00:00:00 1970 From: mkl@pengutronix.de (Marc Kleine-Budde) Date: Tue, 29 Mar 2011 12:05:45 +0200 Subject: mx28 sdio problems In-Reply-To: <20110326141312.GA17797@S2100-06.ap.freescale.net> References: <1298284979-14853-7-git-send-email-shawn.guo@freescale.com> <1298364624-19907-1-git-send-email-shawn.guo@freescale.com> <4D8C809D.9010202@pengutronix.de> <20110326141312.GA17797@S2100-06.ap.freescale.net> Message-ID: <4D91AEF9.4080401@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 03/26/2011 03:13 PM, Shawn Guo wrote: > On Fri, Mar 25, 2011 at 12:46:37PM +0100, Marc Kleine-Budde wrote: >> On 02/22/2011 09:50 AM, Shawn Guo wrote: >>> Signed-off-by: Shawn Guo >> >> I ported these patches to current mainline (the to be released >> 2.6.39-rc1). mmc works with sd and sdhc cards without problems on my >> mx28evk. >> >> However sdio doesn't work. When I plug a sdio wlan card the kernel gives >> me the following error messages in a loop: >> >> [ 1002.760000] mmc1: new SDIO card at address 0001 >> [ 1003.760000] mmc1: card 0001 removed >> [ 1003.810000] mmc1: new SDIO card at address 0001 >> [ 1004.810000] mmc1: card 0001 removed >> >> Any hints how to debug? >> > The only problem I had when testing an Atheros sdio wifi cards was > the shortage of power supply on slot1 (internal regulator powered). > The slot2 on mx28evk just works out of box with this sdio card. You > also rework the board to get the slot1 be powered by external > regulator just like slot2. I just received an atheros sd25, the card gets recognized. No driver to test more. However with the old card the problem remains. On my sheeva plug I see the same problems with the old card. cheers, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de | -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 262 bytes Desc: OpenPGP digital signature URL: