diff mbox series

[v6,11/13] drm/panel: st7703: Assert reset prior to powering down the regulators

Message ID 20200701103126.1512615-12-megous@megous.com (mailing list archive)
State New, archived
Headers show
Series Add support for PinePhone LCD panel | expand

Commit Message

Ondřej Jirman July 1, 2020, 10:31 a.m. UTC 
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>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
---
 drivers/gpu/drm/panel/panel-sitronix-st7703.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index 0c4167994d01..e303b7b1a215 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -417,6 +417,7 @@  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;