Actions
Forum Thread Details
  • State Not Answered
  • Replies 2 replies
  • Subscribers 343 subscribers
  • Views 356 views
  • Users 0 members are here
Related

SD 4-bit mode

Former Member

Hi

why are u-boot and linux accessing SD card in 1-bit mode on zedboard? I see no reason for this? The card is connected in 4-bit compatible mode, and all applications and software should talk in 4-bit mode for best performance.

Parents
  • 0

    trioflex,

    When the zedboard was launched Xilinx was on 14.1 of their tools.  Today they are on 2012.3 (14.3).  After reviewing the git repo for uboot it doesn't look like the support existed for x4 up until this release.

    I am more than halfway done with a how-to for compiling, and packaging the newer version of uboot for the Zedboard.  I should have it published by tomorrow afternoon.

Reply
  • 0

    trioflex,

    When the zedboard was launched Xilinx was on 14.1 of their tools.  Today they are on 2012.3 (14.3).  After reviewing the git repo for uboot it doesn't look like the support existed for x4 up until this release.

    I am more than halfway done with a how-to for compiling, and packaging the newer version of uboot for the Zedboard.  I should have it published by tomorrow afternoon.

Children
No Data