[PATCH v1 22/30] memory: tegra20-emc: Support Tegra SoC device state syncing

Dmitry Osipenko
2020-11-04T23:47:22Z

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 Tegra20.

Tested-by: Nicolas Chauvet <kwizart@gmail.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/memory/tegra/tegra20-emc.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/memory/tegra/tegra20-emc.c b/drivers/memory/tegra/tegra20-emc.c
index 9946b957bb01..b1b0a2439689 100644
--- a/drivers/memory/tegra/tegra20-emc.c
+++ b/drivers/memory/tegra/tegra20-emc.c
@@ -1129,6 +1129,12 @@ static int tegra_emc_probe(struct platform_device *pdev)
return err;
}

+static void tegra_emc_sync_state(struct device *dev)
+{
+ tegra_soc_device_sync_state(dev);
+ icc_sync_state(dev);
+}
+
static const struct of_device_id tegra_emc_of_match[] = {
{ .compatible = "nvidia,tegra20-emc", },
{},
@@ -1141,7 +1147,7 @@ static struct platform_driver tegra_emc_driver = {
.name = "tegra20-emc",
.of_match_table = tegra_emc_of_match,
.suppress_bind_attrs = true,
- .sync_state = icc_sync_state,
+ .sync_state = tegra_emc_sync_state,
},
};
module_platform_driver(tegra_emc_driver);
--
2.27.0