From: Dmitry Osipenko Date: Sun, 11 Aug 2019 21:00:35 +0000 (+0300) Subject: memory: tegra: Increase handshake timeout on Tegra20 X-Git-Tag: v5.15~4939^2~1^2~5 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b56563d0138c3622634e50f3dbca1359b5e7237b;p=platform%2Fkernel%2Flinux-starfive.git memory: tegra: Increase handshake timeout on Tegra20 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 Signed-off-by: Thierry Reding --- diff --git a/drivers/memory/tegra/tegra20-emc.c b/drivers/memory/tegra/tegra20-emc.c index 25a6aad..da75efc 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;