From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
Andrzej Hajda <a.hajda@samsung.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Robert Foss <robert.foss@linaro.org>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Jonas Karlman <jonas@kwiboo.se>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Maxim Schwalm <maxim.schwalm@gmail.com>,
Andreas Westman Dorcsak <hedmoo@yahoo.com>,
Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v1 1/5] drm/bridge: tc358768: Enable reference clock
Date: Sun, 3 Oct 2021 02:34:43 +0300 [thread overview]
Message-ID: <20211002233447.1105-2-digetx@gmail.com> (raw)
In-Reply-To: <20211002233447.1105-1-digetx@gmail.com>
The driver assumes that reference clock is always-enabled, but this is
hardware-dependent and not true for ASUS Transformer TF700T. Make driver
enable / disable the reference clock.
Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # Asus TF700T
Tested-by: Maxim Schwalm <maxim.schwalm@gmail.com> #TF700T
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/gpu/drm/bridge/tc358768.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/bridge/tc358768.c b/drivers/gpu/drm/bridge/tc358768.c
index a3db532bbdd1..18ae6605a803 100644
--- a/drivers/gpu/drm/bridge/tc358768.c
+++ b/drivers/gpu/drm/bridge/tc358768.c
@@ -237,6 +237,10 @@ static void tc358768_hw_enable(struct tc358768_priv *priv)
if (priv->enabled)
return;
+ ret = clk_prepare_enable(priv->refclk);
+ if (ret < 0)
+ dev_err(priv->dev, "error enabling refclk (%d)\n", ret);
+
ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
if (ret < 0)
dev_err(priv->dev, "error enabling regulators (%d)\n", ret);
@@ -274,6 +278,8 @@ static void tc358768_hw_disable(struct tc358768_priv *priv)
if (ret < 0)
dev_err(priv->dev, "error disabling regulators (%d)\n", ret);
+ clk_disable_unprepare(priv->refclk);
+
priv->enabled = false;
}
--
2.32.0
next prev parent reply other threads:[~2021-10-02 23:35 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-02 23:34 [PATCH v1 0/5] Improvements for TC358768 DSI bridge driver Dmitry Osipenko
2021-10-02 23:34 ` Dmitry Osipenko [this message]
2021-10-19 8:47 ` [PATCH v1 1/5] drm/bridge: tc358768: Enable reference clock Robert Foss
2021-10-02 23:34 ` [PATCH v1 2/5] drm/bridge: tc358768: Support pulse mode Dmitry Osipenko
2021-10-19 8:55 ` Robert Foss
2021-10-02 23:34 ` [PATCH v1 3/5] drm/bridge: tc358768: Calculate video start delay Dmitry Osipenko
2021-10-19 9:27 ` Robert Foss
2021-10-02 23:34 ` [PATCH v1 4/5] drm/bridge: tc358768: Disable non-continuous clock mode Dmitry Osipenko
2021-10-19 9:37 ` Robert Foss
2021-10-02 23:34 ` [PATCH v1 5/5] drm/bridge: tc358768: Correct BTACNTRL1 programming Dmitry Osipenko
2021-10-19 9:38 ` Robert Foss
2021-10-19 9:47 ` [PATCH v1 0/5] Improvements for TC358768 DSI bridge driver Robert Foss
2021-10-19 20:37 ` Dmitry Osipenko
2021-12-19 16:02 ` Dmitry Osipenko
2021-12-21 18:10 ` Robert Foss
2021-12-21 18:15 ` Dmitry Osipenko
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