diff mbox series

[v3,2/2] drm/panel: boe-tv101wum-nl6: Fine tune the panel power sequence

Message ID 1675130359-24459-3-git-send-email-xinlei.lee@mediatek.com (mailing list archive)
State New, archived
Headers show
Series Reduce lcm_reset to DSI LP11 send cmd time | expand

Commit Message

Xinlei Lee (李昕磊) Jan. 31, 2023, 1:59 a.m. UTC 
From: Xinlei Lee <xinlei.lee@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.lee@mediatek.com>
---
 drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

AngeloGioacchino Del Regno Jan. 31, 2023, 8:34 a.m. UTC | #1 
Il 31/01/23 02:59, xinlei.lee@mediatek.com ha scritto:
> From: Xinlei Lee <xinlei.lee@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.lee@mediatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
diff mbox series

Patch

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);
+		usleep_range(1000, 2000);
+	}
 	gpiod_set_value(boe->enable_gpio, 1);
 	usleep_range(1000, 2000);
 	gpiod_set_value(boe->enable_gpio, 0);
@@ -1487,6 +1492,7 @@  static const struct panel_desc boe_tv105wum_nw0_desc = {
 	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
 		      MIPI_DSI_MODE_LPM,
 	.init_cmds = boe_init_cmd,
+	.lp11_before_reset = true,
 };
 
 static int boe_panel_get_modes(struct drm_panel *panel,