From 69f88877c3817b712f0d63721a4c1fa9d5678388 Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Wed, 23 Mar 2016 14:15:14 +0100 Subject: [PATCH] drm/exynos/hdmi: add core reset code To ensure HDMI-PHY reprogramming will not affect HDMI the latter should be reset. Signed-off-by: Andrzej Hajda Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_hdmi.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 3f1eb07e365c..f3a4ae504bdc 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -1659,6 +1659,10 @@ static void hdmi_mode_apply(struct hdmi_context *hdata) static void hdmiphy_conf_reset(struct hdmi_context *hdata) { + hdmi_reg_writemask(hdata, HDMI_CORE_RSTOUT, 0, 1); + usleep_range(10000, 12000); + hdmi_reg_writemask(hdata, HDMI_CORE_RSTOUT, ~0, 1); + usleep_range(10000, 12000); hdmi_reg_writemask(hdata, HDMI_PHY_RSTOUT, ~0, HDMI_PHY_SW_RSTOUT); usleep_range(10000, 12000); hdmi_reg_writemask(hdata, HDMI_PHY_RSTOUT, 0, HDMI_PHY_SW_RSTOUT); -- 2.20.1