Messages in this thread Patch in this message | | | From | Yannick Fertré <> | Subject | [PATCH] drm/panel: otm8009a: add delay at the end of initialization | Date | Thu, 21 Mar 2019 09:04:05 +0100 |
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At the end of initialization, a delay is required by the panel. Without this delay, the panel could received a frame early & generate a crash of panel (black screen).
Signed-off-by: Yannick Fertré <yannick.fertre@st.com> --- drivers/gpu/drm/panel/panel-orisetech-otm8009a.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c index 87fa316..58ccf64 100644 --- a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c +++ b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c @@ -248,6 +248,9 @@ static int otm8009a_init_sequence(struct otm8009a *ctx) /* Send Command GRAM memory write (no parameters) */ dcs_write_seq(ctx, MIPI_DCS_WRITE_MEMORY_START); + /* Wait a short while to let the panel be ready before the 1st frame */ + mdelay(10); + return 0; } -- 2.7.4
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