On 03/04/15 07:51, Liu Ying wrote:

The LCDIF engines embedded in i.MX6sl and i.MX6sx SoCs need the axi clock
as the engine's system clock.  The clock should be enabled when accessing
LCDIF registers, otherwise the kernel would hang up.  We should also keep
the clock enabled when the engine is being active to scan out frames from
memory.  This patch makes sure the axi clock is enabled when accessing
registers so that the kernel hang up issue can be fixed.

Reported-by: Peter Chen <redacted>
Tested-by: Peter Chen <redacted>
Cc: <redacted> # 3.19+
Signed-off-by: Liu Ying <redacted>
---
v3->v4:
* To address Tomi's comment, enable/disable the axi clock in
  mxsfb_pan_display() directly instead of checking the host->enabled flag.

v2->v3:
* To address Tomi's comment, improve the commit message only.

v1->v2:
* Add 'Tested-by: Peter Chen [off-list ref]' tag.
* Add 'Cc: [off-list ref] # 3.19+' tag.

 drivers/video/fbdev/mxsfb.c | 68 +++++++++++++++++++++++++++++++++++----------
 1 file changed, 54 insertions(+), 14 deletions(-)

Thanks, queued for 4.2.

 Tomi