diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/tegra/hdmi.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c index 5bc26590ab32..4116b08acabb 100644 --- a/drivers/gpu/drm/tegra/hdmi.c +++ b/drivers/gpu/drm/tegra/hdmi.c @@ -737,6 +737,17 @@ static int tegra_output_hdmi_enable(struct tegra_output *output) usleep_range(1000, 2000); reset_control_deassert(hdmi->rst); + /* power up sequence */ + value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PLL0); + value &= ~SOR_PLL_PDBG; + tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_PLL0); + + usleep_range(10, 20); + + value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PLL0); + value &= ~SOR_PLL_PWR; + tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_PLL0); + tegra_dc_writel(dc, VSYNC_H_POSITION(1), DC_DISP_DISP_TIMING_OPTIONS); tegra_dc_writel(dc, DITHER_CONTROL_DISABLE | BASE_COLOR_SIZE888, |