MTK_HDMI_CLK_AUD_SPDIF
[MTK_HDMI_CLK_AUD_SPDIF] = "spdif",
ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]);
clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]);