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| author |   Arindam Nath <arindam.nath@amd.com> | 2011-05-05 12:19:03 +0530 |
|---|---|---|
| committer |   Chris Ball <cjb@laptop.org> | 2011-05-24 23:53:46 -0400 |
| commit | 3a3035114307cd55e024662bb295a87b849f0bd4 (patch) | |
| tree | 764f881c7a677641abaa211128f27a37c9613d90 /include/linux/mmc/mmc.h | |
| parent | mmc: sd: set current limit for uhs cards (diff) | |
| download | wireguard-linux-3a3035114307cd55e024662bb295a87b849f0bd4.tar.xz wireguard-linux-3a3035114307cd55e024662bb295a87b849f0bd4.zip | |
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>
Diffstat (limited to 'include/linux/mmc/mmc.h')
0 files changed, 0 insertions, 0 deletions