As per section 35.3.1 Starting Reception for the MIPI CSI-2 Input on the
latest hardware manual (R01UH0914EJ0140 Rev.1.40) it is mentioned that
after DPHY reset, we need to wait for 1 msec or more before start
receiving data from the sensor. So add a delay after pre_streamon().
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
v1->v2:
* Added Rb tag from Laurent.
* Replaced usleep_range()->fsleep().
* Added blank space after manual in commit description.
---
drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
index 9f351a05893e..8466b4e55909 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
@@ -5,6 +5,7 @@
* Copyright (C) 2022 Renesas Electronics Corp.
*/
+#include <linux/delay.h>
#include "rzg2l-cru.h"
struct rzg2l_cru_ip_format {
@@ -71,6 +72,8 @@ static int rzg2l_cru_ip_s_stream(struct v4l2_subdev *sd, int enable)
if (ret)
return ret;
+ fsleep(1000);
+
ret = rzg2l_cru_start_image_processing(cru);
if (ret) {
v4l2_subdev_call(cru->ip.remote, video, post_streamoff);
--
2.25.1
