Current polarity configuration code is cleary wrong since it compares same flag two times. However, even if flag name is fixed, it won't work well for resolutions which have one polarity positive and another negative. Fix that by properly set each bit according to each polarity. Since those two bits are not described in any documentation, relationships were obtained by experimentation. Fixes: b7c7436a5ff0 ("drm/sun4i: Implement A83T HDMI driver") Signed-off-by: Jernej Skrabec <jernej.skrabec@xxxxxxxx> --- drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c b/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c index e5bfcdd43ec9..f48e8b70fabe 100644 --- a/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c +++ b/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c @@ -35,10 +35,11 @@ static int sun8i_hdmi_phy_config(struct dw_hdmi *hdmi, void *data, struct sun8i_hdmi_phy *phy = (struct sun8i_hdmi_phy *)data; u32 val = 0; - if ((mode->flags & DRM_MODE_FLAG_NHSYNC) && - (mode->flags & DRM_MODE_FLAG_NHSYNC)) { - val = 0x03; - } + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + val |= 0x01; + + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + val |= 0x02; regmap_update_bits(phy->regs, SUN8I_HDMI_PHY_DBG_CTRL_REG, SUN8I_HDMI_PHY_DBG_CTRL_POL_MASK, -- 2.16.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html