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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Ondrej Jirman <megous@megous.com>
Date: Fri, 26 Jun 2020 02:55:59 +0200
Subject: [PATCH] drm/panel: st7703: Assert reset prior to powering down the
regulators
The reset pin is inverted, so if we don't assert reset, the actual gpio
will be high and may keep driving the IO port of the panel.
Signed-off-by: Ondrej Jirman <megous@megous.com>
---
drivers/gpu/drm/panel/panel-sitronix-st7703.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index e771281eb547..92930e127559 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -416,6 +416,7 @@ static int st7703_unprepare(struct drm_panel *panel)
if (!ctx->prepared)
return 0;
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
regulator_disable(ctx->iovcc);
regulator_disable(ctx->vcc);
ctx->prepared = false;
--
2.26.2
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