Assert hardware reset before clocks are enabled and then de-assert it
after clocks are enabled. This brings hardware into a predictable state
and removes relying on implicit de-assertion of resets which is done by
the clk driver.

Tested-by: Peter Geis <redacted>
Tested-by: Nicolas Chauvet <redacted>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 sound/soc/tegra/tegra30_ahub.c | 33 ++++++++++++++++-----------------
 sound/soc/tegra/tegra30_ahub.h |  1 +
 2 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/sound/soc/tegra/tegra30_ahub.c b/sound/soc/tegra/tegra30_ahub.c
index 4dbb58f7ea36..246cf6a373a1 100644
--- a/sound/soc/tegra/tegra30_ahub.c
+++ b/sound/soc/tegra/tegra30_ahub.c

@@ -65,10 +65,20 @@ static int tegra30_ahub_runtime_resume(struct device *dev)
 {
 	int ret;
 
+	ret = reset_control_assert(ahub->reset);
+	if (ret)
+		return ret;
+
 	ret = clk_bulk_prepare_enable(ahub->nclocks, ahub->clocks);
 	if (ret)
 		return ret;
 
+	ret = reset_control_reset(ahub->reset);
+	if (ret) {
+		clk_bulk_disable_unprepare(ahub->nclocks, ahub->clocks);
+		return ret;
+	}
+
 	regcache_cache_only(ahub->regmap_apbif, false);
 	regcache_cache_only(ahub->regmap_ahub, false);