The tegra20-devfreq driver provides memory frequency scaling functionality
and it uses EMC clock for the scaling. Since tegra20-devfreq is a software
driver, the device for the driver needs to be created manually. Let's do
it from EMC driver since it provides the clk rate-change functionality.
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
---
drivers/memory/tegra/tegra20-emc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/memory/tegra/tegra20-emc.c b/drivers/memory/tegra/tegra20-emc.c
index 437d9d789941..e603cc0b0341 100644
--- a/drivers/memory/tegra/tegra20-emc.c
+++ b/drivers/memory/tegra/tegra20-emc.c
@@ -884,6 +884,9 @@ static int tegra_emc_probe(struct platform_device *pdev)
tegra_emc_debugfs_init(emc);
tegra_emc_interconnect_init(emc);
+ if (IS_ENABLED(CONFIG_ARM_TEGRA20_DEVFREQ))
+ platform_device_register_simple("tegra20-devfreq", -1, NULL, 0);
+
/*
* Don't allow the kernel module to be unloaded. Unloading adds some
* extra complexity which doesn't really worth the effort in a case of
--
2.27.0
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