Messages in this thread Patch in this message | | | From | Eric Anholt <> | Subject | [PATCH 2/2] drm/vc4: Update kerneldoc about CEC and power management | Date | Wed, 20 Sep 2017 15:59:35 -0700 |
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Boris had added full power management, and then Hans partially removed it to enable CEC, so update the docs about both.
Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Eric Anholt <eric@anholt.net> --- drivers/gpu/drm/vc4/vc4_hdmi.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 65826a4f208e..ce18384c6be3 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -33,13 +33,9 @@ * interconnect) bus to the encoder side for insertion into the video * blank regions. * - * The driver's HDMI encoder does not yet support power management. - * The HDMI encoder's power domain and the HSM/pixel clocks are kept - * continuously running, and only the HDMI logic and packet ram are - * powered off/on at disable/enable time. - * - * The driver does not yet support CEC control, though the HDMI - * encoder block has CEC support. + * Note that HDMI CEC requires that the HSM clock be running even when + * not scanning out, so that input can be processed. The PHY is still + * powered down when not scanning out, though. */ #include <drm/drm_atomic_helper.h> -- 2.14.1
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