Turned out that it could take over a millisecond under some circumstances,
like running on a very low CPU/memory frequency. TRM says that handshake
happens when there is a "safe" moment, but not explains exactly what that
moment is. Apparently at least memory should be idling and thus the low
frequency should be a reasonable cause for a longer handshake delay.
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
---
drivers/memory/tegra/tegra20-emc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/memory/tegra/tegra20-emc.c b/drivers/memory/tegra/tegra20-emc.c
index 25a6aad6a7a9..da75efc632c7 100644
--- a/drivers/memory/tegra/tegra20-emc.c
+++ b/drivers/memory/tegra/tegra20-emc.c
@@ -236,7 +236,7 @@ static int emc_complete_timing_change(struct tegra_emc *emc, bool flush)
}
timeout = wait_for_completion_timeout(&emc->clk_handshake_complete,
- usecs_to_jiffies(100));
+ msecs_to_jiffies(100));
if (timeout == 0) {
dev_err(emc->dev, "EMC-CAR handshake failed\n");
return -EIO;
--
2.22.0
