AcoSail/kernel_optimize_test
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kernel_optimize_test/drivers/media/i2c
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Lars-Peter Clausen da8892d410 [media] adv7604: Initialize drive strength to default when using DT 
The adv7604 driver platform data contains fields for configuring the drive
strength of the output pins. When probing the driver through DT these
fields are not explicitly initialized, which means they are left at 0. This
is a reserved setting for the drive strength configuration though and can
cause signal integrity issues.

Whether these signal integrity issues are visible depends on the PCB
specifics (e.g. the higher the load capacitance for the output the more
visible the issue). But it has been observed on existing solutions at high
pixel clock rates.

Initialize the drive strength settings to the power-on-reset value of the
device when probing through devicetree to avoid this issue.

Fixes: 0e158be0162b ("adv7604: Add DT support")

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-01-30 15:39:40 -02:00
..
cx25840 [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
m5mols
s5c73m3 [media] s5c73m3: Fix entity function assignment for the OIF subdev 2016-09-22 10:15:36 -03:00
smiapp [media] smiapp: Make suspend and resume functions __maybe_unused 2016-12-21 06:53:35 -02:00
soc_camera [media] soc-camera: Fix a return value in case of error 2017-01-30 14:46:44 -02:00
ad5820.c [media] ad5820: Fix sparse warning 2016-10-24 17:37:12 -02:00
ad9389b.c [media] media/i2c: Delete owner assignment 2016-09-06 16:21:24 -03:00
adp1653.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
adv7170.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
adv7175.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
adv7180.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
adv7183_regs.h [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
adv7183.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
adv7343_regs.h
adv7343.c
adv7393_regs.h
adv7393.c [media] media/i2c: Delete owner assignment 2016-09-06 16:21:24 -03:00
adv7511.c [media] cec: pass parent device in register(), not allocate() 2016-11-29 12:07:17 -02:00
adv7604.c [media] adv7604: Initialize drive strength to default when using DT 2017-01-30 15:39:40 -02:00
adv7842.c [media] cec: pass parent device in register(), not allocate() 2016-11-29 12:07:17 -02:00
ak881x.c [media] v4l2: remove g/s_crop from video ops 2016-08-24 09:46:09 -03:00
aptina-pll.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
aptina-pll.h [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
as3645a.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
bt819.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
bt856.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
bt866.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
cs53l32a.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
cs3308.c [media] media/i2c: Delete owner assignment 2016-09-06 16:21:24 -03:00
cs5345.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
ir-kbd-i2c.c [media] rc-main: assign driver type during allocation 2017-01-30 13:59:57 -02:00
Kconfig [media] s5k4ecgx: select CRC32 helper 2016-12-21 07:33:40 -02:00
ks0127.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
ks0127.h [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
lm3560.c
lm3646.c
m52790.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
Makefile [media] media: mt9m111: move mt9m111 out of soc_camera 2016-09-09 10:41:17 -03:00
ml86v7667.c
msp3400-driver.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
msp3400-driver.h
msp3400-kthreads.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
mt9m032.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
mt9m111.c [media] media: mt9m111: move mt9m111 out of soc_camera 2016-09-09 10:41:17 -03:00
mt9p031.c
mt9t001.c [media] v4l: mt9t001: fix clean up in case of power-on failures 2016-06-28 07:55:39 -03:00
mt9v011.c
mt9v032.c [media] v4l: mt9v032: Add V4L2 controls for AEC and AGC 2016-06-28 08:01:51 -03:00
noon010pc30.c
ov2659.c
ov7640.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
ov7670.c
ov9650.c [media] ov9650: add support for asynchronous probing 2016-09-19 16:20:02 -03:00
s5k4ecgx.c [media] media/i2c: Delete owner assignment 2016-09-06 16:21:24 -03:00
s5k5baf.c
s5k6a3.c [media] s5k6a3: Add missing entity function initialization 2016-09-22 10:15:16 -03:00
s5k6aa.c
saa711x_regs.h
saa717x.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
saa6588.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
saa6752hs.c
saa7110.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
saa7115.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
saa7127.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
saa7185.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
smiapp-pll.c [media] smiapp-pll: Don't complain aloud about failing PLL calculation 2016-10-21 15:15:06 -02:00
smiapp-pll.h
sony-btf-mpx.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
sr030pc30.c
tc358743_regs.h
tc358743.c [media] tc358743: Remove deprecated create_singlethread_workqueue 2016-07-08 15:01:18 -03:00
tda7432.c
tda9840.c
tea6415c.c
tea6415c.h
tea6420.c
tea6420.h
ths7303.c
ths8200_regs.h
ths8200.c [media] media/i2c: Delete owner assignment 2016-09-06 16:21:24 -03:00
tlv320aic23b.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
tvaudio.c [media] tvaudio: mark printk continuation lines as such 2016-10-21 08:51:29 -02:00
tvp514x_regs.h [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
tvp514x.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
tvp5150_reg.h [media] v4l: tvp5150: Fix comment regarding output pin muxing 2016-12-21 07:31:49 -02:00
tvp5150.c [media] v4l: tvp5150: Don't override output pinmuxing at stream on/off time 2016-12-21 07:32:15 -02:00
tvp7002_reg.h [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
tvp7002.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
tw2804.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
tw9903.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
tw9906.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
uda1342.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
upd64031a.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
upd64083.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
vp27smpx.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
vpx3220.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
vs6624_regs.h [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
vs6624.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
wm8739.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00
wm8775.c [media] media: Drop FSF's postal address from the source code files 2017-01-27 11:38:09 -02:00