leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

media: marvell-ccic/mmp: enable clock before accessing registers

Browse Source 
The access to REG_CLKCTRL or REG_CTRL1 without the clock enabled hangs
the machine. Enable the clock first.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Lubomir Rintel 2019-05-28 05:07:27 -04:00 committed by Mauro Carvalho Chehab
parent fa49e1d37b
commit f12fb2849b
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/media/platform/marvell-ccic/mmp-driver.c
View File

@ -142,6 +142,7 @@ static int mmpcam_power_up(struct mcam_camera *mcam)
* Turn on power and clocks to the controller.
*/
mmpcam_power_up_ctlr(cam);
mcam_clk_enable(mcam);
/*
* Provide power to the sensor.
*/
@ -155,8 +156,6 @@ static int mmpcam_power_up(struct mcam_camera *mcam)
gpio_set_value(pdata->sensor_reset_gpio, 1); /* reset is active low */
mdelay(5);
mcam_clk_enable(mcam);
return 0;
}