3 files changed, 42 insertions, 0 deletions

diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c
index 37c3843902..c7a832ca90 100644
--- a/drivers/mmc/mmc-uclass.c
+++ b/drivers/mmc/mmc-uclass.c
@@ -122,6 +122,20 @@ int mmc_set_enhanced_strobe(struct mmc *mmc)
 }
 #endif
 
+int dm_mmc_host_power_cycle(struct udevice *dev)
+{
+	struct dm_mmc_ops *ops = mmc_get_ops(dev);
+
+	if (ops->host_power_cycle)
+		return ops->host_power_cycle(dev);
+	return 0;
+}
+
+int mmc_host_power_cycle(struct mmc *mmc)
+{
+	return dm_mmc_host_power_cycle(mmc->dev);
+}
+
 int mmc_of_parse(struct udevice *dev, struct mmc_config *cfg)
 {
 	int val;
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index c2c85ba144..f683b52ead 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1546,6 +1546,16 @@ static int mmc_set_ios(struct mmc *mmc)
 
 	return ret;
 }
+
+static int mmc_host_power_cycle(struct mmc *mmc)
+{
+	int ret = 0;
+
+	if (mmc->cfg->ops->host_power_cycle)
+		ret = mmc->cfg->ops->host_power_cycle(mmc);
+
+	return ret;
+}
 #endif
 
 int mmc_set_clock(struct mmc *mmc, uint clock, bool disable)
@@ -2715,6 +2725,11 @@ static int mmc_power_cycle(struct mmc *mmc)
 	ret = mmc_power_off(mmc);
 	if (ret)
 		return ret;
+
+	ret = mmc_host_power_cycle(mmc);
+	if (ret)
+		return ret;
+
 	/*
 	 * SD spec recommends at least 1ms of delay. Let's wait for 2ms
 	 * to be on the safer side.
diff --git a/include/mmc.h b/include/mmc.h
index 8c29c8d4ab..1a9efe4c38 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -466,6 +466,16 @@ struct dm_mmc_ops {
 	/* set_enhanced_strobe() - set HS400 enhanced strobe */
 	int (*set_enhanced_strobe)(struct udevice *dev);
 #endif
+
+	/**
+	 * host_power_cycle - host specific tasks in power cycle sequence
+	 *		      Called between mmc_power_off() and
+	 *		      mmc_power_on()
+	 *
+	 * @dev:	Device to check
+	 * @return 0 if not present, 1 if present, -ve on error
+	 */
+	int (*host_power_cycle)(struct udevice *dev);
 };
 
 #define mmc_get_ops(dev)        ((struct dm_mmc_ops *)(dev)->driver->ops)
@@ -477,6 +487,7 @@ int dm_mmc_get_cd(struct udevice *dev);
 int dm_mmc_get_wp(struct udevice *dev);
 int dm_mmc_execute_tuning(struct udevice *dev, uint opcode);
 int dm_mmc_wait_dat0(struct udevice *dev, int state, int timeout_us);
+int dm_mmc_host_power_cycle(struct udevice *dev);
 
 /* Transition functions for compatibility */
 int mmc_set_ios(struct mmc *mmc);
@@ -485,6 +496,7 @@ int mmc_getwp(struct mmc *mmc);
 int mmc_execute_tuning(struct mmc *mmc, uint opcode);
 int mmc_wait_dat0(struct mmc *mmc, int state, int timeout_us);
 int mmc_set_enhanced_strobe(struct mmc *mmc);
+int mmc_host_power_cycle(struct mmc *mmc);
 
 #else
 struct mmc_ops {
@@ -494,6 +506,7 @@ struct mmc_ops {
 	int (*init)(struct mmc *mmc);
 	int (*getcd)(struct mmc *mmc);
 	int (*getwp)(struct mmc *mmc);
+	int (*host_power_cycle)(struct mmc *mmc);
 };
 #endif