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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2013-05-15 20:53:22 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-05-23 00:09:16 +0100 |
| commit | 0125962000777cd1e2ce53deefb99779d5ee5199 (patch) | |
| tree | a7c3a3c8d7e53391b9b02362407919c7f11045aa /Documentation/devicetree | |
| parent | 9cc639a20fdc0b935e55d4992f93963f95233ca4 (diff) | |
| download | linux-0125962000777cd1e2ce53deefb99779d5ee5199.tar.bz2 | |
ARM: 7726/1: mmc: mmci: Add card_busy function to improve UHS card support
To verify a signal voltage switch at initialization of UHS cards the
.card_busy callback is used. For some of the ST-variants, card busy
detection on the DAT0 pin is supported.
We extend the variant struct with a busy_detect flag to indicate
support for it. A corresponding busy detect function, which polls the
busy status bit, is then set to the .card_busy callback.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'Documentation/devicetree')
0 files changed, 0 insertions, 0 deletions