diff mbox series

[6.1.y-cip,18/30] media: platform: rzg2l-cru: rzg2l-ip: Add delay after D-PHY reset

Message ID 20240805164342.211857-19-biju.das.jz@bp.renesas.com (mailing list archive)
State New
Headers show
Series Add support for RZ/{G2L,G2LC,G2UL,V2L} Camera Data Receiving Unit | expand

Commit Message

Biju Das Aug. 5, 2024, 4:43 p.m. UTC 
commit 9c7fa014ca320b0eb95062922a73563aa9734cd0 upstream.

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@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Link: https://lore.kernel.org/r/20240213181233.242316-3-biju.das.jz@bp.renesas.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-ip.c
index 4dcd2faff5bb..bbb3d8e93c64 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);