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
next 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 ` [PATCH 1/1] drm/panel: truly: Add additional delay after pulling down reset gpio 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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