Messages in this thread | | | Date | Thu, 25 Aug 2016 08:10:47 -0700 | From | Sören Brinkmann <> | Subject | Re: [PATCH 1/2] sdhci-of-arasan: Add quirk and device tree parameter to fake CD bit |
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On Wed, 2016-08-24 at 18:23:03 -0500, Zach Brown wrote: > The sdhci controller on xilinx zynq devices will not function unless > the cd bit is provided. http://www.xilinx.com/support/answers/61064.html > In cases where it is impossible to provide the cd bit in hardware, > setting the controller to test mode and then setting inserted to true > will get the controller to function with out the cd bit. > > The device property "fake-cd" will let the arasan driver know it needs > to fake the cd bit for the controller inorder for the controller to > function with a SD card that does not provide the CD bit.
I thought the CD is, if not pinned out, tied off to some valid logic level. Isn't it enough to specify cd-inverted if needed to make it work in those cases?
Sören
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