PM / devfreq: tegra30-devfreq: add support for Tegra114

Lets add Tegra114 support to activity monitor device as a preparation to
upcoming EMC controller support.

Signed-off-by: Svyatoslav Ryhel <[email protected]>
Reviewed-by: Mikko Perttunen <[email protected]>
Acked-by: Dmitry Osipenko <[email protected]>
Acked-by: MyungJoo Ham <[email protected]>
Signed-off-by: Chanwoo Choi <[email protected]>
Link: https://lore.kernel.org/lkml/[email protected]/

Author: clamor-s

drivers/devfreq/tegra30-devfreq.c

@@ -941,23 +941,30 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
 	return 0;
 }
 
+/*
+ * The activity counter is incremented every 256 memory transactions. However,
+ * the number of clock cycles required for each transaction varies across
+ * different SoC generations. For instance, a single transaction takes 2 EMC
+ * clocks on Tegra30, 1 EMC clock on Tegra114, and 4 EMC clocks on Tegra124.
+ */
 static const struct tegra_devfreq_soc_data tegra124_soc = {
 	.configs = tegra124_device_configs,
-
-	/*
-	 * Activity counter is incremented every 256 memory transactions,
-	 * and each transaction takes 4 EMC clocks.
-	 */
 	.count_weight = 4 * 256,
 };
 
+static const struct tegra_devfreq_soc_data tegra114_soc = {
+	.configs = tegra124_device_configs,
+	.count_weight = 256,
+};
+
 static const struct tegra_devfreq_soc_data tegra30_soc = {
 	.configs = tegra30_device_configs,
 	.count_weight = 2 * 256,
 };
 
 static const struct of_device_id tegra_devfreq_of_match[] = {
 	{ .compatible = "nvidia,tegra30-actmon",  .data = &tegra30_soc, },
+	{ .compatible = "nvidia,tegra114-actmon", .data = &tegra114_soc, },
 	{ .compatible = "nvidia,tegra124-actmon", .data = &tegra124_soc, },
 	{ },
 };