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 8ae474d9bfb90cc220945d93bf35804bac6a87a6..b16715e9515d03877780262f40422ea694f6b1a6 100644 (file)
--- 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) {