memory: tegra: Only initialize reset controller if available

The memory controller hot resets are implemented in the BPMP on Tegra186
and later, so there's no need to provide an implementation via the
memory controller driver. Conditionally register the reset controller
only if needed.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20210602163302.120041-10-thierry.reding@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
index 68c6797f2707a305b227f3f773db47f19baae388..4aa17bdd63921f13ece4e0d279429e9ad7dfce2f 100644 (file)
--- a/drivers/memory/tegra/mc.c
+++ b/drivers/memory/tegra/mc.c
@@ -768,10 +768,11 @@ static int tegra_mc_probe(struct platform_device *pdev)
                }
        }
 
-       err = tegra_mc_reset_setup(mc);
-       if (err < 0)
-               dev_err(&pdev->dev, "failed to register reset controller: %d\n",
-                       err);
+       if (mc->soc->reset_ops) {
+               err = tegra_mc_reset_setup(mc);
+               if (err < 0)
+                       dev_err(&pdev->dev, "failed to register reset controller: %d\n", err);
+       }
 
        err = tegra_mc_interconnect_setup(mc);
        if (err < 0)