From: Arindam Nath <arindam.nath@amd.com>
Date: Thu, 5 May 2011 06:49:03 +0000 (+0530)
Subject: mmc: sd: report correct speed and capacity of uhs cards
X-Git-Tag: v3.0-rc1~148^2~33
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a3035114307cd55e024662bb295a87b849f0bd4;p=pandora-kernel.git

mmc: sd: report correct speed and capacity of uhs cards

Since only UHS-I cards respond with S18A set in response to ACMD41,
we set the card as ultra-high-speed after successfull initialization.
We need to decide whether a card is SDXC based on the C_SIZE field
of CSDv2.0 register. According to Physical Layer spec v3.01, the
minimum value of C_SIZE for SDXC card is 00FFFFh.

Tested by Zhangfei Gao with a Toshiba uhs card and general hs card,
on mmp2 in SDMA mode.

Signed-off-by: Arindam Nath <arindam.nath@amd.com>
Reviewed-by: Philip Rakity <prakity@marvell.com>
Tested-by: Philip Rakity <prakity@marvell.com>
Acked-by: Zhangfei Gao <zhangfei.gao@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

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