LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Vivek Gautam <vivek.gautam@codeaurora.org>
To: airlied@linux.ie, thierry.reding@gmail.com, daniel@ffwll.ch,
	dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org, robdclark@gmail.com,
	linux-arm-msm@vger.kernel.org, bjorn.andersson@linaro.org,
	Vivek Gautam <vivek.gautam@codeaurora.org>
Subject: [PATCH 1/1] drm/panel: truly: Add additional delay after pulling down reset gpio
Date: Mon, 27 May 2019 15:56:16 +0530	[thread overview]
Message-ID: <20190527102616.28315-1-vivek.gautam@codeaurora.org> (raw)

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


             reply	other threads:[~2019-05-27 10:26 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-27 10:26 Vivek Gautam [this message]
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190527102616.28315-1-vivek.gautam@codeaurora.org \
    --to=vivek.gautam@codeaurora.org \
    --cc=airlied@linux.ie \
    --cc=bjorn.andersson@linaro.org \
    --cc=daniel@ffwll.ch \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=robdclark@gmail.com \
    --cc=thierry.reding@gmail.com \
    --subject='Re: [PATCH 1/1] drm/panel: truly: Add additional delay after pulling down reset gpio' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).