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authorYannick Fertré <yannick.fertre@st.com>2019-03-21 09:04:05 +0100
committerThierry Reding <treding@nvidia.com>2019-04-03 18:44:41 +0200
commit0084c3c71126fc878c6dab8a6ab8ecc484c2be02 (patch)
tree50c70997406ccc212f9d2ed26d5a73b38a4e3b78 /drivers/gpu/drm/panel
parent530b19698dc8ab125068ee3bf946f4cc1aca18fd (diff)
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drm/panel: otm8009a: Add delay at the end of initialization
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> Reviewed-by: Philippe Cornu <philippe.cornu@st.com> Tested-by: Philippe Cornu <philippe.cornu@st.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/1553155445-13407-1-git-send-email-yannick.fertre@st.com
Diffstat (limited to 'drivers/gpu/drm/panel')
-rw-r--r--drivers/gpu/drm/panel/panel-orisetech-otm8009a.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
index 87fa316e1d7b..58ccf648b70f 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;
}