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mmc: tmio: add flag to reduce delay after changing clock status

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The docs for RCar Gen2 & 3 I have access to, mention delays of 5ms after
stop and 1ms after start. Make it possible to apply these values.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Wolfram Sang
2016-01-19 12:28:31 +01:00
committed by Ulf Hansson
parent 2bf8ab6ba2
commit 04e24b80a3
2 changed files with 8 additions and 3 deletions
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4
include/linux/mfd/tmio.h
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@@ -65,6 +65,10 @@
* Some controllers can support SDIO IRQ signalling.
*/
#define TMIO_MMC_SDIO_IRQ (1 << 2)
/* Some controllers don't need to wait 10ms for clock changes */
#define TMIO_MMC_FAST_CLK_CHG (1 << 3)
/*
* Some controllers require waiting for the SD bus to become
* idle before writing to some registers.