tegra210_emc_set_refresh
tegra210_emc_set_refresh(emc, TEGRA210_EMC_REFRESH_NOMINAL);
tegra210_emc_set_refresh(emc, TEGRA210_EMC_REFRESH_2X);
tegra210_emc_set_refresh(emc, TEGRA210_EMC_REFRESH_4X);
tegra210_emc_set_refresh(emc, TEGRA210_EMC_REFRESH_THROTTLE);
int tegra210_emc_set_refresh(struct tegra210_emc *emc,