[v10,07/15] memory: tegra20-emc: Increase handshake timeout
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Message ID 20190811210043.20122-8-digetx@gmail.com
State New
Headers show
  • memory: tegra: Introduce Tegra30 EMC driver
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Commit Message

Dmitry Osipenko Aug. 11, 2019, 9 p.m. UTC
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@gmail.com>
 drivers/memory/tegra/tegra20-emc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff mbox series

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;