From: Hsin-Yi Wang <hsinyi@chromium.org>
To: Robert Foss <robert.foss@linaro.org>
Cc: Andrzej Hajda <a.hajda@samsung.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Jonas Karlman <jonas@kwiboo.se>,
Jernej Skrabec <jernej.skrabec@siol.net>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Hsin-Yi Wang <hsinyi@chromium.org>, Xin Ji <xji@analogixsemi.com>,
Sam Ravnborg <sam@ravnborg.org>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: [PATCH] drm/bridge: anx7625: Fix power on delay
Date: Tue, 27 Apr 2021 13:53:20 +0800 [thread overview]
Message-ID: <20210427055320.32404-1-hsinyi@chromium.org> (raw)
From anx7625 spec, the delay between powering on power supplies and gpio
should be larger than 10ms.
Fixes: 6c744983004e ("drm/bridge: anx7625: disable regulators when power off")
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
---
drivers/gpu/drm/bridge/analogix/anx7625.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
index 23283ba0c4f9..0a8db745cfd5 100644
--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
@@ -893,7 +893,7 @@ static void anx7625_power_on(struct anx7625_data *ctx)
usleep_range(2000, 2100);
}
- usleep_range(4000, 4100);
+ usleep_range(10000, 11000);
/* Power on pin enable */
gpiod_set_value(ctx->pdata.gpio_p_on, 1);
--
2.31.1.498.g6c1eba8ee3d-goog
next reply other threads:[~2021-04-27 5:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-27 5:53 Hsin-Yi Wang [this message]
2021-04-27 14:18 ` [PATCH] drm/bridge: anx7625: Fix power on delay Neil Armstrong
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