30 lines
1019 B
Diff
30 lines
1019 B
Diff
|
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
|
||
|
|
|