Proper PHY configuration should be as follow: 1. set HDMI clock parents to OSCCLK. 2. reconfigure PHY. 3. set HDMI clock parents to PHY. 4. wait for PLL stabilization.
The patch fixes it and consolidates the code.
Signed-off-by: Andrzej Hajda a.hajda@samsung.com --- drivers/gpu/drm/exynos/exynos_hdmi.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 839ad70..5c7dbfc 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -1657,15 +1657,11 @@ static void hdmi_mode_apply(struct hdmi_context *hdata) else hdmi_v14_mode_apply(hdata);
- hdmiphy_wait_for_pll(hdata); - hdmi_clk_set_parents(hdata, true); hdmi_start(hdata, true); }
static void hdmiphy_conf_reset(struct hdmi_context *hdata) { - hdmi_clk_set_parents(hdata, false); - 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); @@ -1683,29 +1679,33 @@ static void hdmiphy_enable_mode_set(struct hdmi_context *hdata, bool enable) static void hdmiphy_conf_apply(struct hdmi_context *hdata) { int ret; - int i; + const u8 *phy_conf;
- i = hdmi_find_phy_conf(hdata, hdata->current_mode.clock * 1000); - if (i < 0) { + ret = hdmi_find_phy_conf(hdata, hdata->current_mode.clock * 1000); + if (ret < 0) { DRM_ERROR("failed to find hdmiphy conf\n"); return; } + phy_conf = hdata->drv_data->phy_confs.data[ret].conf; + + hdmi_clk_set_parents(hdata, false); + + hdmiphy_conf_reset(hdata);
hdmiphy_enable_mode_set(hdata, true); - ret = hdmiphy_reg_write_buf(hdata, 0, - hdata->drv_data->phy_confs.data[i].conf, 32); + ret = hdmiphy_reg_write_buf(hdata, 0, phy_conf, 32); if (ret) { DRM_ERROR("failed to configure hdmiphy\n"); return; } hdmiphy_enable_mode_set(hdata, false); - + hdmi_clk_set_parents(hdata, true); usleep_range(10000, 12000); + hdmiphy_wait_for_pll(hdata); }
static void hdmi_conf_apply(struct hdmi_context *hdata) { - hdmiphy_conf_reset(hdata); hdmiphy_conf_apply(hdata); hdmi_start(hdata, false); hdmi_conf_init(hdata);