[PATCH 3/7] drm/exynos/hdmi: add core reset code

[Andrzej Hajda]

To ensure HDMI-PHY reprogramming will not affect
HDMI the latter should be reset.

Signed-off-by: Andrzej Hajda <a.hajda at samsung.com>
---
 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 16951f3..6faa104 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1662,6 +1662,10 @@ 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);
-- 
1.9.1