i.MX ProcessorsのトピックRe: SD card detection with multiplexed CD/DAT3 https://community.nxp.com/t5/i-MX-Processors/SD-card-detection-with-multiplexed-CD-DAT3/m-p/234467#M18348 <HTML><HEAD></HEAD><BODY><P>hi,</P><P></P><P>CD/DAT3 card detection mechanism is workable on i.MX6, but there is no well-implementation of SDHC bus driver.</P><P>You can set uSDHCx_INT_STATUS_EN:CINSSEN, uSDHCx_INT_SIGNAL_EN:CINSIEN, and uSDHCx_PROT_CTRL:D3CD to enable CD/DAT3 card detection mechanism. Before that, you need to configure SD_DAT3 pad with pull-down.</P><P></P><P>But it's preferred to use mechanism switch(GPIO) for card detection, DAT3 is CS pin for SPI mode. A pull-down on this pin and CMD0 may set this card into the SPI mode.</P><P></P><P>Regards,</P><P>Max</P></BODY></HTML> Wed, 25 Sep 2013 03:14:18 GMT max_tsai 2013-09-25T03:14:18Z SD card detection with multiplexed CD/DAT3 https://community.nxp.com/t5/i-MX-Processors/SD-card-detection-with-multiplexed-CD-DAT3/m-p/234466#M18347 <HTML><HEAD></HEAD><BODY><P>Is it possible to detect an SD card insertion / removal with a micro-SD socket with multiplexed CD / DAT3 line, in Linux on i.MX6 ?</P><P>Thanks !</P></BODY></HTML> Mon, 16 Sep 2013 13:48:17 GMT https://community.nxp.com/t5/i-MX-Processors/SD-card-detection-with-multiplexed-CD-DAT3/m-p/234466#M18347 andreygelman 2013-09-16T13:48:17Z Re: SD card detection with multiplexed CD/DAT3 https://community.nxp.com/t5/i-MX-Processors/SD-card-detection-with-multiplexed-CD-DAT3/m-p/234467#M18348 <HTML><HEAD></HEAD><BODY><P>hi,</P><P></P><P>CD/DAT3 card detection mechanism is workable on i.MX6, but there is no well-implementation of SDHC bus driver.</P><P>You can set uSDHCx_INT_STATUS_EN:CINSSEN, uSDHCx_INT_SIGNAL_EN:CINSIEN, and uSDHCx_PROT_CTRL:D3CD to enable CD/DAT3 card detection mechanism. Before that, you need to configure SD_DAT3 pad with pull-down.</P><P></P><P>But it's preferred to use mechanism switch(GPIO) for card detection, DAT3 is CS pin for SPI mode. A pull-down on this pin and CMD0 may set this card into the SPI mode.</P><P></P><P>Regards,</P><P>Max</P></BODY></HTML> Wed, 25 Sep 2013 03:14:18 GMT https://community.nxp.com/t5/i-MX-Processors/SD-card-detection-with-multiplexed-CD-DAT3/m-p/234467#M18348 max_tsai 2013-09-25T03:14:18Z