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drm/panel: st7703: Assert reset prior to powering down the regulators

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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>
Tested-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200701162928.1638874-12-megous@megous.com
This commit is contained in:
Ondrej Jirman 2020-07-01 18:29:26 +02:00 committed by Sam Ravnborg
parent 43fc6db016
commit c8a7534840
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/panel/panel-sitronix-st7703.c
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@ -415,6 +415,7 @@ 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;