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mmc: core: add mmc-hs400-enhanced-strobe support

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This patch introduce mmc-hs400-enhanced-strobe for platforms
which want to enable enhanced strobe function from DT if the
mmc host controller claims to support enhanced strobe.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Shawn Lin
2016-05-26 09:56:12 +08:00
committed by Ulf Hansson
parent a60119ce94
commit ef29c0e273
2 changed files with 3 additions and 0 deletions
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include/linux/mmc/host.h
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@@ -302,6 +302,7 @@ struct mmc_host {
#define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17)
#define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */
#define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */
#define MMC_CAP2_HS400_ES (1 << 20) /* Host supports enhanced strobe */
mmc_pm_flag_t pm_caps; /* supported pm features */