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 <clamor95@gmail.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Acked-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: MyungJoo Ham <myungjoo.ham@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://lore.kernel.org/lkml/20260126185423.77786-1-clamor95@gmail.com/

diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c
index 8b57194ac69843ac1b0c5b3f4f37bf1dc7a2ea14..401aac6a9f07eae48430e000ca71030e853f2e71 100644 (file)
--- a/drivers/devfreq/tegra30-devfreq.c
+++ b/drivers/devfreq/tegra30-devfreq.c
@@ -941,16 +941,22 @@ 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,
@@ -958,6 +964,7 @@ static const struct tegra_devfreq_soc_data tegra30_soc = {
 
 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, },
        { },
 };