tegra_sor_enable_regulator
err = tegra_sor_enable_regulator(sor, sor->avdd_io_supply);
err = tegra_sor_enable_regulator(sor, sor->vdd_pll_supply);
err = tegra_sor_enable_regulator(sor, sor->hdmi_supply);
err = tegra_sor_enable_regulator(sor, sor->avdd_io_supply);
err = tegra_sor_enable_regulator(sor, sor->vdd_pll_supply);