diff options
| author | Ondrej Jirman <megous@megous.com> | 2020-07-01 19:29:26 +0300 |
|---|---|---|
| committer | Sam Ravnborg <sam@ravnborg.org> | 2020-07-01 20:25:50 +0300 |
| commit | c8a753484066a6382d2539d3dca1428164a682bf (patch) | |
| tree | 21ee380311004651beb77ff88db34ad8baffd806 /drivers/gpu/drm/panel | |
| parent | 43fc6db016a01793a89904ec71793337961ae5b0 (diff) | |
| download | linux-c8a753484066a6382d2539d3dca1428164a682bf.tar.xz | |
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>
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
Diffstat (limited to 'drivers/gpu/drm/panel')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-sitronix-st7703.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c index 7750179bca60..8996ced2b721 100644 --- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c +++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c @@ -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; |