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* [PATCH 1/1] drm/panel: truly: Add additional delay after pulling down reset gpio
@ 2019-05-27 10:26 Vivek Gautam
  2019-05-28  8:43 ` Marc Gonzalez
  2019-06-05  8:22 ` Sam Ravnborg
  0 siblings, 2 replies; 5+ messages in thread
From: Vivek Gautam @ 2019-05-27 10:26 UTC (permalink / raw)
  To: airlied, thierry.reding, daniel, dri-devel
  Cc: linux-kernel, robdclark, linux-arm-msm, bjorn.andersson, Vivek Gautam

MTP SDM845 panel seems to need additional delay to bring panel
to a workable state. Running modetest without this change displays
blurry artifacts.

Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
---
 drivers/gpu/drm/panel/panel-truly-nt35597.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/panel/panel-truly-nt35597.c b/drivers/gpu/drm/panel/panel-truly-nt35597.c
index fc2a66c53db4..aa7153fd3be4 100644
--- a/drivers/gpu/drm/panel/panel-truly-nt35597.c
+++ b/drivers/gpu/drm/panel/panel-truly-nt35597.c
@@ -280,6 +280,7 @@ static int truly_35597_power_on(struct truly_nt35597 *ctx)
 	gpiod_set_value(ctx->reset_gpio, 1);
 	usleep_range(10000, 20000);
 	gpiod_set_value(ctx->reset_gpio, 0);
+	usleep_range(10000, 20000);
 
 	return 0;
 }
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation


^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2019-06-06 11:18 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-05-27 10:26 [PATCH 1/1] drm/panel: truly: Add additional delay after pulling down reset gpio Vivek Gautam
2019-05-28  8:43 ` Marc Gonzalez
2019-05-29  5:57   ` Vivek Gautam
2019-06-05  8:22 ` Sam Ravnborg
2019-06-06 11:18   ` Vivek Gautam

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