RE: MMC card not working on Intel PXA27x (development kit)

From: Martin Malik (mmalik)
Date: 11/29/04 

Date: Mon, 29 Nov 2004 00:37:03 -0800

If you have PXA27x C0-Stepping or below, this might be due to Erratum #42
(check PXA270 Spec. Update). If this is the case (can be confirmed by
checking debug msgs) then you need to patch the driver (sdcontrol.c in CSP)
in order to ignore Response CRC Error for cmds returning R2 responses.

Martin

"Zhijie" wrote:

> Hi,
>
> I've tried using MMC card on Intel PXA27x development kit and using
> driver comes with WinCE5.0. I can't get it to work. However, if I use a SD
> Memory card instead, it works just fine. So, I'm sure that compilation and
> setup was ok. It seems to be some bugs in the driver that not able to
> recognize MMC card. Does anyone know about this issue and how to fix this?
> Thanks for any info!
>
> Zhijie

Relevant Pages

  • Re: [RFC] MTD driver for MMC cards
    ... This is a new version of the driver I posted back in January. ... mtd layer doesn't deal with media larger than 4GB anyway at ... * transfer a block to/from the card. ... * Initialize an mmc card. ...
    (Linux-Kernel)
  • [patch 1/6] Add MMC password protection (lock/unlock) support V4
    ... This patch prevents the block driver from trying to run privileged class ... - * themselves make the decision whether to drive this card in their ... + * This currently matches any MMC driver to any MMC card - drivers themselves ...
    (Linux-Kernel)
  • Re: Secure Digital (SD) cards
    ... XSC1BD BSP shipped with PB 4.2 has a driver for SD and MMC card. ... Applied Data Systems ... Gold Level Member ...
    (microsoft.public.windowsce.platbuilder)