Il 10/01/23 06:54, xinlei....@mediatek.com ha scritto:
From: Xinlei Lee <xinlei....@mediatek.com>

For "boe,tv105wum-nw0" this special panel, it is stipulated in the
panel spec that MIPI needs to keep the LP11 state before the
lcm_reset pin is pulled high.

Signed-off-by: Xinlei Lee <xinlei....@mediatek.com>
---
  drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 6 ++++++
  1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c 
b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
index f0093035f1ff..67df61de64ae 100644
--- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
+++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
@@ -36,6 +36,7 @@ struct panel_desc {
        const struct panel_init_cmd *init_cmds;
        unsigned int lanes;
        bool discharge_on_disable;
+       bool lp11_before_reset;
  };
struct boe_panel {
@@ -1261,6 +1262,10 @@ static int boe_panel_prepare(struct drm_panel *panel)
usleep_range(10000, 11000); + if (boe->desc->lp11_before_reset) {
+               mipi_dsi_dcs_nop(boe->dsi);

NOP will never reach the driveric if it is in reset, which should apparently be
the state of it at that point in code.

I guess that you wanted to do that after LCM reset and before sending init cmds.

Regards,
Angelo

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