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Ben Avison authored
Detail: The OMAP4 SD controller is more fussy about how it is reset than the OMAP3 and BCM2835 controllers - more details in inline comments. Issue identified by Willi Theiss, but I have implemented the fix differently. Also added Willi's support for DebugLib debugging. Admin: Tested on Beagleboard, Raspberry Pi and Pandaboard, and with the usual set of 30+ cards. Version 0.04. Tagged as 'SDIODriver-0_04'
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