[PATCH 4/5] media: imx8mq-mipi-csi2: Explicitly release reset

[guoniu . zhou]

From: Guoniu Zhou <guoniu.zhou@xxxxxxx>

Call reset_control_deassert() to explicitly release reset to
make sure reset bits are cleared since platform like i.MX8ULP
can't clear its reset bits automatically.

Signed-off-by: Guoniu Zhou <guoniu.zhou@xxxxxxx>
---
 drivers/media/platform/nxp/imx8mq-mipi-csi2.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/nxp/imx8mq-mipi-csi2.c b/drivers/media/platform/nxp/imx8mq-mipi-csi2.c
index be07ff27071f..071d939d9048 100644
--- a/drivers/media/platform/nxp/imx8mq-mipi-csi2.c
+++ b/drivers/media/platform/nxp/imx8mq-mipi-csi2.c
@@ -371,9 +371,7 @@ static int imx8mq_mipi_csi_sw_reset(struct csi_state *state)
 	int ret;
 
 	/*
-	 * these are most likely self-clearing reset bits. to make it
-	 * more clear, the reset-imx7 driver should implement the
-	 * .reset() operation.
+	 * Explicitly release reset to make sure reset bits are cleared.
 	 */
 	ret = reset_control_assert(state->rst);
 	if (ret < 0) {
@@ -381,7 +379,7 @@ static int imx8mq_mipi_csi_sw_reset(struct csi_state *state)
 		return ret;
 	}
 
-	return 0;
+	return reset_control_deassert(state->rst);
 }
 
 static void imx8mq_mipi_csi_set_params(struct csi_state *state)
-- 
2.34.1