HDMI_PHY_POL0
hdmi_writeb(hdmi, HDMI_PHY_HPD | HDMI_PHY_RX_SENSE, HDMI_PHY_POL0);
phy_int_pol = hdmi_readb(hdmi, HDMI_PHY_POL0);
hdmi_modb(hdmi, ~phy_int_pol, phy_pol_mask, HDMI_PHY_POL0);