| Message ID | 20181025222134.174583-3-dianders@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2,1/6] dt-bindings: drm/panel: simple: Add no-hpd property | expand |
On Thu, Oct 25, 2018 at 03:21:31PM -0700, Douglas Anderson wrote: > If the HPD signal isn't hooked up to this panel we need a 200 ms > delay. In the datasheet this is shown as the maximum time that HPD > will take to be asserted after power is given to the panel. > > Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Sean Paul <sean@poorly.run> > --- > > Changes in v2: > - Use "hpd_absent_delay" property instead of a bool + prepare delay > > drivers/gpu/drm/panel/panel-simple.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c > index 687fd087b9fc..88592f9a0018 100644 > --- a/drivers/gpu/drm/panel/panel-simple.c > +++ b/drivers/gpu/drm/panel/panel-simple.c > @@ -1396,6 +1396,7 @@ static const struct panel_desc innolux_tv123wam = { > .height = 173, > }, > .delay = { > + .hpd_absent_delay = 200, > .unprepare = 500, > }, > }; > -- > 2.19.1.568.g152ad8e336-goog >
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c index 687fd087b9fc..88592f9a0018 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -1396,6 +1396,7 @@ static const struct panel_desc innolux_tv123wam = { .height = 173, }, .delay = { + .hpd_absent_delay = 200, .unprepare = 500, }, };
If the HPD signal isn't hooked up to this panel we need a 200 ms delay. In the datasheet this is shown as the maximum time that HPD will take to be asserted after power is given to the panel. Signed-off-by: Douglas Anderson <dianders@chromium.org> --- Changes in v2: - Use "hpd_absent_delay" property instead of a bool + prepare delay drivers/gpu/drm/panel/panel-simple.c | 1 + 1 file changed, 1 insertion(+)