Sync driver state using the Tegra SoC device state syncing API, telling to regulators voltage coupler that EMC state is ready for DVFS. This is required for enabling system-wide DVFS on Tegra30.
Tested-by: Peter Geis pgwipeout@gmail.com Signed-off-by: Dmitry Osipenko digetx@gmail.com --- drivers/memory/tegra/tegra30-emc.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/memory/tegra/tegra30-emc.c b/drivers/memory/tegra/tegra30-emc.c index 6b20ce9f16af..dd7474065346 100644 --- a/drivers/memory/tegra/tegra30-emc.c +++ b/drivers/memory/tegra/tegra30-emc.c @@ -1666,6 +1666,12 @@ static int tegra_emc_resume(struct device *dev) return 0; }
+static void tegra_emc_sync_state(struct device *dev) +{ + tegra_soc_device_sync_state(dev); + icc_sync_state(dev); +} + static const struct dev_pm_ops tegra_emc_pm_ops = { .suspend = tegra_emc_suspend, .resume = tegra_emc_resume, @@ -1684,7 +1690,7 @@ static struct platform_driver tegra_emc_driver = { .of_match_table = tegra_emc_of_match, .pm = &tegra_emc_pm_ops, .suppress_bind_attrs = true, - .sync_state = icc_sync_state, + .sync_state = tegra_emc_sync_state, }, }; module_platform_driver(tegra_emc_driver);