UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

media: rcar-csi2: Add warning for PHY speed less than minimum 

Add a warning message when the selected PHY speed is less
than supported minimum PHY speed given in the hsfreq table[1].

For raspberry pi camera capture on Kingfisher board with resolution
640x480, the calculated PHY speed is 48 mbps which is less than
the minimum PHY speed 80 Mbps from the table[1]. But in this cases
capture is successful.

[1] specs r19uh0105ej0200-r-car-3rd-generation.pdf [Table 25.9]

Signed-off-by: Suresh Udipi <sudipi@jp.adit-jv.com>
Signed-off-by: Michael Rodin <mrodin@de.adit-jv.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Suresh Udipi 2021-08-13 17:07:55 +02:00 committed by Mauro Carvalho Chehab
parent cee44d4fba
commit ebeefe2685
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/media/platform/rcar-vin/rcar-csi2.c
View File

@ -544,6 +544,10 @@ static int rcsi2_set_phypll(struct rcar_csi2 *priv, unsigned int mbps)
const struct rcsi2_mbps_reg *hsfreq;
const struct rcsi2_mbps_reg *hsfreq_prev = NULL;
if (mbps < priv->info->hsfreqrange->mbps)
dev_warn(priv->dev, "%u Mbps less than min PHY speed %u Mbps",
mbps, priv->info->hsfreqrange->mbps);
for (hsfreq = priv->info->hsfreqrange; hsfreq->mbps != 0; hsfreq++) {
if (hsfreq->mbps >= mbps)
break;