Re: [PATCH 2/2] drm/panel: boe-tv101wum-nl6: Reduce lcm_reset to send initial code time

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Il 06/01/23 04:05, xinlei.lee@xxxxxxxxxxxx ha scritto:
From: Xinlei Lee <xinlei.lee@xxxxxxxxxxxx>

Since the panel spec stipulates that the time from lcm_reset to DSI to
send the initial code should be greater than 6ms and less than 40ms,
so reduce the delay before sending the initial code and avoid panel
exceptions.

Fixes: a869b9db7adf ("drm/panel: support for boe tv101wum-nl6 wuxga dsi video mode panel")
Signed-off-by: Xinlei Lee <xinlei.lee@xxxxxxxxxxxx>
---
  drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 1 -
  1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
index 857a2f0420d7..f0093035f1ff 100644
--- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
+++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
@@ -780,7 +780,6 @@ static const struct panel_init_cmd inx_hj110iz_init_cmd[] = {
  };
static const struct panel_init_cmd boe_init_cmd[] = {
-	_INIT_DELAY_CMD(24),

You said that should be greater than 6 and less than 40: perhaps on MediaTek
platforms removing this delay is fine but we don't know about others - and this
driver is for all platforms.

To stay on the safe side you should, at this point, replace this delay with

	_INIT_DELAY_CMD(7);

Regards,
Angelo




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