From: Dmitry Osipenko <digetx@gmail.com>
Date: Mon, 24 Feb 2020 23:58:34 +0000 (+0300)
Subject: memory: tegra: Correct debugfs clk rate-range on Tegra20
X-Git-Tag: timers-urgent-2020-04-12~33^2~3^2~2
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=2243af41115d0e36e6414df6dd2a0386e022d9f8;p=users%2Fdwmw2%2Flinux.git

memory: tegra: Correct debugfs clk rate-range on Tegra20

Correctly set clk rate-range if number of available timings is zero.
This fixes noisy "invalid range [4294967295, 0]" error messages during
boot.

Fixes: 8209eefa3d37 ("memory: tegra: Implement EMC debugfs interface on Tegra20")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/drivers/memory/tegra/tegra20-emc.c b/drivers/memory/tegra/tegra20-emc.c
index 8ae474d9bfb90..b16715e9515d0 100644
--- a/drivers/memory/tegra/tegra20-emc.c
+++ b/drivers/memory/tegra/tegra20-emc.c
@@ -628,6 +628,11 @@ static void tegra_emc_debugfs_init(struct tegra_emc *emc)
 			emc->debugfs.max_rate = emc->timings[i].rate;
 	}
 
+	if (!emc->num_timings) {
+		emc->debugfs.min_rate = clk_get_rate(emc->clk);
+		emc->debugfs.max_rate = emc->debugfs.min_rate;
+	}
+
 	err = clk_set_rate_range(emc->clk, emc->debugfs.min_rate,
 				 emc->debugfs.max_rate);
 	if (err < 0) {