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mmc: omap: follow TRM procedure to power on cards
authorGrazvydas Ignotas <notasas@gmail.com>
Mon, 19 Mar 2012 03:50:53 +0000 (03:50 +0000)
committerAndy Fleming <afleming@freescale.com>
Tue, 8 May 2012 23:02:21 +0000 (18:02 -0500)
commitb1e725f2c6e2d8f9855a0b4cba508a2abe748b4d
tree3b7b816b096a641e10ee8174fe876cc83d0118bctree | snapshot
parent62722036410b7887a04cf6705effb3122fb9b549commit | diff
mmc: omap: follow TRM procedure to power on cards

According to OMAP3 TRM, PBIASLITEPWRDNZ bits must be cleared while MMC
power supply is being enabled and is ramping up (those bits might be
left set by the previous bootloader). It doesn't say what happens if
this procedure is violated, but better not to risk here and do things
as required.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Acked-by: Tom Rini <trini@ti.com>
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