Merge "mmc: core: retune after un-gating the clocks"

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 43d266a79e53..63f7bf87843f 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2349,6 +2349,13 @@ void mmc_ungate_clock(struct mmc_host *host)
 		WARN_ON(host->ios.clock);
 		/* This call will also set host->clk_gated to false */
 		__mmc_set_clock(host, host->clk_old);
+		/*
+		 * We have seen that host controller's clock tuning circuit may
+		 * go out of sync if controller clocks are gated.
+		 * To workaround this issue, we are triggering retuning of the
+		 * tuning circuit after ungating the controller clocks.
+		 */
+		mmc_retune_needed(host);
 	}
 }