[PATCH v1 23/30] memory: tegra30-emc: Support Tegra SoC device state syncing

Dmitry Osipenko
2020-11-04T23:47:44Z

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);
--
2.27.0