Messages in this thread | | | Date | Mon, 18 Sep 2023 13:27:05 -0700 | Subject | Re: [RFC PATCH v2 4/9] drm/panel: nv3052c: Wait before entering sleep mode | From | Jessica Zhang <> |
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On 9/18/2023 5:58 AM, John Watts wrote: > The panel needs us to wait 120ms between exiting and entering sleep. > Guarantee that by always waiting 150ms before entering sleep mode.
Hi John,
Same question as the last patch -- is this a fix for something?
Thanks,
Jessica Zhang
> > Signed-off-by: John Watts <contact@jookia.org> > --- > drivers/gpu/drm/panel/panel-newvision-nv3052c.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/panel/panel-newvision-nv3052c.c b/drivers/gpu/drm/panel/panel-newvision-nv3052c.c > index 2526b123b1f5..307335d0f1fc 100644 > --- a/drivers/gpu/drm/panel/panel-newvision-nv3052c.c > +++ b/drivers/gpu/drm/panel/panel-newvision-nv3052c.c > @@ -289,6 +289,9 @@ static int nv3052c_unprepare(struct drm_panel *panel) > struct mipi_dbi *dbi = &priv->dbi; > int err; > > + /* Wait 150ms in case we just exited sleep mode */ > + msleep(150); > + > err = mipi_dbi_command(dbi, MIPI_DCS_ENTER_SLEEP_MODE); > if (err) > dev_err(priv->dev, "Unable to enter sleep mode: %d\n", err); > -- > 2.42.0 >
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