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[v2,RESEND,2/4] media: platform: rzg2l-cru: rzg2l-ip: Add delay after D-PHY reset

Message ID 20240130164115.116613-3-biju.das.jz@bp.renesas.com (mailing list archive)
State Superseded
Delegated to: Kieran Bingham
Headers show
Series RZ/G2L CSI/CRU improvements | expand

Commit Message

Biju Das Jan. 30, 2024, 4:41 p.m. UTC 
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>
---
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 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 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);