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drm/exynos/hdmi: simplify clock re-parenting

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Driver tries to disable sclk_hdmi during re-parenting, to avoid possible
glitches. It is ineffective as the clock is used also by other devices (mixer).
Anyway driver works without disabling sclk_hdmi.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Andrzej Hajda 2015-09-25 14:48:23 +02:00 committed by Inki Dae
parent 1ab739db8e
commit da5e36ae96
1 changed files with 0 additions and 4 deletions
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4
drivers/gpu/drm/exynos/exynos_hdmi.c
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@ -1569,9 +1569,7 @@ static void hdmi_mode_apply(struct hdmi_context *hdata)
hdmiphy_wait_for_pll(hdata);
clk_disable_unprepare(hdata->res.sclk_hdmi);
clk_set_parent(hdata->res.mout_hdmi, hdata->res.sclk_hdmiphy);
clk_prepare_enable(hdata->res.sclk_hdmi);
/* enable HDMI and timing generator */
hdmi_start(hdata, true);
@ -1579,9 +1577,7 @@ static void hdmi_mode_apply(struct hdmi_context *hdata)
static void hdmiphy_conf_reset(struct hdmi_context *hdata)
{
clk_disable_unprepare(hdata->res.sclk_hdmi);
clk_set_parent(hdata->res.mout_hdmi, hdata->res.sclk_pixel);
clk_prepare_enable(hdata->res.sclk_hdmi);
/* reset hdmiphy */
hdmi_reg_writemask(hdata, HDMI_PHY_RSTOUT, ~0, HDMI_PHY_SW_RSTOUT);