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mmc: omap_hsmmc: cleanup clock configuration

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Add a separate function for starting the clock, stopping the clock and
setting the clock. Starting the clock and stopping the clock can
be used irrespective of setting the clock (For example during iodelay
recalibration).
Also set the clock only if there is a change in frequency.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
This commit is contained in:
Jean-Jacques Hiblot
2018-01-30 16:01:30 +01:00
committed by Jaehoon Chung
parent d4d64889b0
commit 5baf543e52
2 changed files with 54 additions and 24 deletions
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2
arch/arm/include/asm/omap_mmc.h
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@@ -172,6 +172,8 @@ struct omap_hsmmc_plat {
#define CLK_400KHZ 1
#define CLK_MISC 2
#define CLKD_MAX 0x3FF /* max clock divisor: 1023 */
#define RSP_TYPE_NONE (RSP_TYPE_NORSP | CCCE_NOCHECK | CICE_NOCHECK)
#define MMC_CMD0 (INDEX(0) | RSP_TYPE_NONE | DP_NO_DATA | DDIR_WRITE)