On Fri, Dec 01, 2017 at 02:17:00AM +, James Ausmus wrote:
> Without masking out the old value, we can end up pointing the DDI to a
> disabled PLL, which makes the system fall over. Mask out the previous
> value before setting the PLL to DDI mapping.
>
> This can be observed by running igt/test
Without masking out the old value, we can end up pointing the DDI to a
disabled PLL, which makes the system fall over. Mask out the previous
value before setting the PLL to DDI mapping.
This can be observed by running igt/testdisplay with both an eDP and
HDMI/DP output active.
v2: Add the Bugzill
Without masking out the old value, we can end up pointing the DDI to a
disabled PLL, which makes the system fall over. Mask out the previous
value before setting the PLL to DDI mapping.
This can be observed by running igt/testdisplay with both an eDP and
HDMI/DP output active.
Fixes: 555e38d27317
